This is by far the best series on RUclips. Has me super excited. Some guys promise a series but then only do 2/3 videos. Keep up the great work. Came across your name based on your comment on the All About Circuits VCO website
I just build it and its working like a charm! This is actualy my first (succesful) PCB project, I plan on following your series and build other modules as well as an excuse to learn about electronics. Thanks for all the work you put in your channel man :D
5 лет назад+1
That is great to hear! Hope to see hear what you create as you build along :)
You are amazing good sir. I've been playing around for a while breadboarding but have had a hard time getting started. Thank you so much!! Really like the PSU
I am so impressed by this series. Have been building little 9v modular circuits for the last year and have been daunted by the step into "real" modular, but this series shows an amazing way in. I have looked at many of these circuits earlier, but this does it all together. Thank you!
6 лет назад+1
Thank you for your kind words. I hope this series gives you the “kick” you need as it did for me. As you say some of these circuits I’ve been looking at for years but never found the motivation to build them as I didn’t have any other modules. Doing a bunch in one go does kickstart things off. Good luck and let us know your progress :)
I did it! I blew up a capacitor on my first attempt but made another one and it worked. Strange that schematics show the lm7819 wired the wrong way I made a hopper and wired it up as per the schematics fired it up and it got real hot real quick. Wired up as shown in your image and it works great now. I even got the ac to 12v ac adaptor for 50c after rummaging through a box in a thrift store. Thanks for doing these. I'm in the rabbit hole now!
4 года назад
Good thing starting with that. Now you now how that sounds and smells like. 🤪 Is the schematics I made showing the 7912 the wrong way? If so let me know so I can fix it. Well. Welcome to the rabbit hole. It’s getting crowded here. 🤣
@ The pins as shown in mad mouse schematics don't seem to be right ( I am new to this so I could well be wrong) it did cause some confusion but when I did as you said in the graphic at 23:09 it worked just fine. I already did the 40106 module but managed to drop a large globule of solder right across the legs of the chip so made a mess of it, I got it working eventually (always check your earths, right!) but it's temperamental so I might well just salvage the pots and jacks and the funky face plate I did and start over. I'm very much a beginner but enjoy it immensely, even the mistakes! you cant feel like a mad scientist unless you blow something up :D .
Right on. After some research I'll be spending a bit more on building a variable voltage psu. I'll be building all the other modules you've posted. Thanks for these videos
Dude! This video series is a godsend! I have spent months searching the net and reading old synth manuals trying to figure out how to begin a diy synth and it's maddening. Lot's of half answers, dead-ends and much ego. Anyway, love the videos and I have begun. Thanks so much for doing these videos. Some questions/comments - can you do a video showing how you extend the power from the power supply to the modules? And, how do you determine the limit of modules for the power supply? Thanks again, and off to Patreon!
6 лет назад+1
Thank you for your kind words! Its great to hear that you have begun your Modular Journey aswell :) I felt the same as you did, and I found that there was no real tutorial for making a modular, that is one of the reasons for this "series" apart from the fact ofcourse that I have a modular now :D As for your questions, I only use dupont cables for power, and have made a few 3 pinned "extenders" so I can plug one dupont in from the power supply and then two cables out. As for the limit of modules, I go by the "when the cables dont reach anymore, make a new PSU" ;) The psus are so cheap to make that I do the safe before the sorry... I have one psu that I have 9 modules in, and it doesnt seem to be a problem with it. I have three power modules in my modular right now. but then I have a few more modules than are shown so far in my videos. I have a few episodes left... ;)
@ Thanks Kristian. I am waiting for parts, but I actually looked at the jumper cables I bought and they are dupont!?! And with some header materials I think I now understand some methods to transfer the power. Thanks again, I'll provide some pics when I'm completed.
HI Kristian what is that rack box you showed "used for telecoms, they throw these out! - I need to get down my local recycling tip to look for these and bus power strips!
3 года назад
The rack boxes used for eurorack is a very common rack system used by many industries. Telecom is one. So yeah check your local recycling place. There could be a lot of those out there.
Really like this series, thanks a lot for doing it. Just want to point out that on the schematics pdf of the psu, on the -12V side, one of the caps (C6) is marked with wrong polarity (realised this the smelly way c: )
6 лет назад+3
Oh no! I am so sorry. I have fixed the schematics. Thank you very much for pointing this out!
Hi Kristian. I was wondering if u could do a video looking back at this project (the whole modular) and telling your thoughts, regrets etc conserning the build. I mean that if there has been something you would do differently it would be nice to learn from your mistakes. Good diy content!
6 лет назад
Hello, I will do a recap once I am done there are still two “days” to go :). BUT! I was thinking just today (after a failed adsr build) that I should do a video about all the failures I’ve done during this build aswell. In most videos (not only mine) it looks mostly as if everything just works. But there is a lot of error checking and plain fails that isn’t that good content if shown too often. But once in a while it is good to know that failing is part of the process and a way forward. So interesting that we had similar ideas. :) And thanks!
great series! you should add some ginko grains to that modular, they are arduino based and super simple and versatile! i built five! just an arduino nano, 3 pots and four jacvks, serve as vco, sample player, really cool!
5 лет назад
Thanks for the tip. Ginkgo is already on my list along with some more fun arduino stuff. :)
I’m confused by difference between left and right diagrams at 19:42. The right schematic matches the original mad mouse schematic, but the one on the left changes the wiring of the 470 uF capacitors. Is there a reason for this? I’m new to electronics, so maybe I’m just not grasping a simple concept… [edit] I found the schematic in Dropbox and it is drawn as depicted in the original Madmouse spec. I’ll just follow that. This video series is amazing
Thanks to your channel I'm starting it out in the modular world! I ordered a few parts kit, but it would mean a lot if I could order your power supply kits, would you make them available anytime soon? I would order 10 units to Canada right away. Thanks again!!!
5 лет назад+1
Hello. I’m working on a better one with bigger caps from the beginning that might be better for modulars. I’ll try to get them up around new year. It is great you are beginning your modular journey! It is an awesome instrument. Let me know of any jams etc you do. Would love to hear it. :)
Hi Kristian, Very nice series of videos here... For us beginners, could you show how to lay the scematics out on the vario board?
6 лет назад
An interesting request. Since I need a third! psu for my modular it is quite fitting in time. I’ll post a video in my other channel in a few days and send you the link to it.
@ Sounds Awesome! Would be very nice with a video about it, also something that could be a little bit general. Not just for the PSU, but how to generally approach the task of looking at a scematic and convert it to a vario board... -and also, thank you for taking the time to make these videos, it is very much appreciated!!!
6 лет назад
@@emilsebastianbll1610 Hello again Emil, I have made a video now that hopefully can help you and others to "dare" take the step into soldering on veroboard. ruclips.net/video/2uh50mXFJyY/видео.html Welcome to the Electronics experiments club ;)
this series is gold! -but: a few beginner questions on this power supply: when the wall wart Adapter gives ac current - how you can exactly say in the schematics where is plus and where is minus when the poles of the source are alternating? when i want to plug in a module, to give for example the cd40106 plus and ground....how does this work? or do we Kind of generate "fixed plus and minus poles" with this circuit, and thats why you measure at the end the Volts in dc configuration??? and: from the Adapter on, the "ground line": does this first ground Symbol do anything else then just say it is the ground line? because: how to ground the ground??? very naive, Basic questions:) thanks a lot for your help!
Hey Kristian! I really love your videos, they're amazing! Already built the power supply unit and an Atari Punk Console module, it took time until all the components arrived from aliexpress :) now I'm having some troubles with the 4046 vco :) but my question is more basic - I want to connect the output signal to my audio interface but I'm afraid the output voltage is too high. shouldn't we make an output module to convert the signal to line level? thanks!
@ no the "telecom racks" do they have an official name? I looked for server racks but can't find any cheap ones
5 лет назад
Vader Porgel ah ok. No the way you “search” for them is to visit your local scrap yard or recycling plant and look in the electronics bin and see if anyone has thrown away anything like that recently. ;)
5 лет назад
Vader Porgel otherwise it is called eurorack. And it is expensive unfortunately.
Hi Kristian, I really enjoy your Videos and you inspired me to make some synths on my own. It worked really well for now :) I have a question, how do you print on your AluPanels? I don't have a Laser-cutter but I do that the old scool way withs saws and drills, now I just want to print some designs on them. Thanks again, Renato
Can you please share a hi-res image of the psu? I don't follow why there are multiple pins for +v, -v, and gnd. Additionally, in the vco video, I see you added 3 pins for gnd and two pins for +v. Could you elaborate on why so and how you connected the power to modules? Thank you!
Man why are my 35V 1000 uf caps so tiny, but your 35V 470 uf caps so HUGE. I'm convinced I'm about to blow some shit up. I will report back with results.
3 года назад
I think mine are higher voltage. Just make sure your transformer doesn’t output more than your caps are rated and you should be fine. It is always good with a bit of headroom though.
Hi. Thanks for a nice introduction to modular. I'd love to tag along on this build to dip my toes. I struggle to find the 12 volt AC Wall Wart adapter and LM7912. Is there some components I could use instead? And how do I figure that out?
4 года назад
The easiest place to find 12vac is near halogen lights. Often used with those. 7912 you should be able to find in most online electronics stores. Which country are you in?
Hi Kristian, thanks for the series! It really helps! For the PSU example, what would you do to improve the circuit if more current is required? let's say 3000mA?
7812/7912 handles 1A max, and 12VAC adapters usually are also 1,65/2A max, besides that you would also need higher capacitance caps at least
3 года назад
Sorry I seem to have missed your question. Adding more capacitance is one thing also raising the input voltage to 15-18vac and as Daniel says the regulators has a max of about 1A so after that you need to either build another psu or find regulators with higher output current.
Hej Kristian thanks for the video and what promises to be a fantastic build series! I'm about to dive right into the PSU but I've got a question: How many milliamperes would you recommend for the 12VAC wall wart? Thanks again!
5 лет назад
I think I the one I have is around 800 mA. It all depends on how many modules you’ll want on each psu. For all my 30+ modules I use three of these.
hey! this whole project looks awesome and i would really want to have a shot at it with some friends. i have really no experience with anything diy electronics, and starting this looks pretty scary and complicated, especially the soldering and how everything links up. i honestly wouldn't know where to start, would you happen to have any resources that could help someone like me figure this out?
C5 blew up... The polarity is correct and the capacitor was new. The led lighted up and all was perfect until I heard a hiss and realized that it was throwing smoke all over the place. I'm new to electronics and don't know why it blew up. Any tips for troubleshooting?
I have Just built this PSU and It works perfectly on the +12v and -12v side,but the LED fails to light up,d'ora anyone know what May be the cause?(I triple checked the connections but they seem ti be fine,the resistor Is in series with the LED)
Hi! I just soldered it, works fine, I have my +12v and -12v on my multimeter, but within a minute it started to smell bad and I noticed my 7912 was overheating... It was very very hot. Do you know what I should do about it?
Nice informative videos! I have one question, what are the huge caps on the board? I'm looking at the schematic, and none of the caps have values that might cause the cap to be that large.
6 лет назад
On the psu? That would probably be the 470uF. They have to be 35 v or larger that makes them quite big in size. It is explained why in the video. I believe I used 40 or 50 volt caps.
Sorry I don’t fully understand. I mount the panels with screws if that is what you mean. The pcbs are either hot glued to the panel or just held in place by cables to pots and jacks.
Hej, jag funderar på att börja bygga synthmoduler och denna serien är fantastiskt inspirerande. Jag upplever det som en ganska hög tröskel att börja, till och med med inköp. Du länkar mest till ebay. köper du där och hur hanterar du tullens momsavgift?
4 года назад+1
Halloj. I början gjorde jag det innan postens avgifter kom in i bilden. Numera köper jag stora paket med komponenter från lcsc.com. Mindre beställningar görs på electrokit.se. Du kan köpa ett kit till psun av mig billigt i tindie storen. Och jag kan skicka med en 40106 så du kommer igång. ;) kan även rekommendera mina prototypnivå för enkelt lödande. ;) Men de första avsnitten är rätt enkla och bara du kommer igång och läser scheman så kommer du säkert igång. Psun är jättelätt att löda ihop. Och jag har även gjort en jättelångsamt video för hur man löser ihop den på vanlig veroboard. Hoppas du kommer igång och får ihop en modular. :)
@ Det lät ju utmärkt! är det denna du syftade på då? www.tindie.com/products/Sourcery/-12v-and-5v-powersupply-for-eurorack/. Går jag bara in och beställer en sån då? Jag förstod inte vad du menade med att dina "prototypnivå". vill du utveckla den meningen? Tack för hjälpen!
4 года назад
Niclasrydhe sorry menade prototypkort :) Har dessutom slut på psun. Kom nya kort idag och nya komponenter förhoppningsvis på torsdag. Så då har jag så jag kan skicka. Eller ta den mindre psu om du vill komma igång fort och ännu billigare....
@25:30 Do these racks come with rails or you've added them?
5 лет назад
They came as a whole box with rails. But they were scrap from some phone station or something. It is used in a lot of places and can be found second hand quite cheap.
Great vid! one question : I just spent one hour trying to find a 12v ac power supply, i didn't find any under 40 euros... is it so uncommon? where did you get yours? it's frustrating, i have all the components!
4 года назад+1
Halogen light. They are almost always run on 12v ac. Most wall warts have a transformer in them which is ac and then the circuit inside is what makes it into 12vdc. A 12v dc wall wart is a transformer and half of this circuit. Kind of. :) But again halogen lights is the easiest place to find it.
probably a noob question but, the easy eda schematics that you provide in the dropbox.. is there a way to convert them directly to easy eda file or pcb? or do I have to manually retrace them in easy eda? I accidentally ordered some copper clad plates & I was wondering if I could directly convert the files to pcb format & create pcbs at home
2 года назад
I don’t have the easyeda files. But yeah you can print a pcb on an overhead paper and then transfer to a pcb and etch it at home. But I really would recommend you just order from a pcb manufacturer. It’s quite a lot of chemicals and hassle. :)
@ Do you think that this transfomer could replace the wall adaptor? www.aliexpress.com/item/32973106103.html?spm=a2g0s.9042311.0.0.27424c4drsR4RQ because i have checked the output of it (just the transfomer) and it shows me 4V AC but it lighted up a 12V light.. I don't really understand the difference between adaptor and transformer...
Hi again Kristian! I'm building this as to have it on the bench for testing modules (assume will be using 1-2 conected max). Can I replace tje 470uf for any other bigger value? (Have a pair of 1000uf 35v and 3300uf 50v with me)
I'll answer myself: used the 1000uf ones and apparently worked properly!! Super thrill to start working on some modules!! (Still waiting for parts to came). Your series is one of the biggest reasons why I got the iniciative to try and build a modular, just want to really thank from the heart for the work you've done (and keep doing). Love from Brasil Kristian!!
5 лет назад+1
Sorry for late reply. And the answer was as you might expect yes. ;). The bigger the caps the more modules you can drive with it :) Thanks for your kind words. I am happy that so many people have begun making a modular just because I tricke... ehum ... I mean showed how easy it is. 🤣
Question! when connecting the PSU to your modules, are you just going from a header on the PSU to a header on the module? or are you using any form of a bus board?
5 лет назад+1
Mostly directly from the psu. I have in some cases soldered a few headers together to get an extender/splitter.
So, is there any particular reason we need this PSU with AC/AC 12V out power supply? Why not get a usual AC/DC 12V instead? Thanks in advance for your reply
5 лет назад
Many of the modules in a modular is run from a +/-12v power supply + gnd. An ac/dc adapter just gives you +12v and gnd. +/- and gnd takes a few moments to understand. But if you don’t want to make a psu then you can make all the modules that just requires +12v and gnd. You can also buy ready made psus for +/-12v. Get one with 5v aswell if you buy one.
@ thanks so much for your patient reply. Somehow I missed that point, but now I get it. Already soldered the PSU though, and waiting for the arrival of the ac/ac adaptor to test it. Thanks you once again for your tutorials, they are very helpful!
Are the max amps provided for both +-12v limited by the AC-AC power supply? Assuming it's a 1amp supply each rail is probably
6 лет назад
Oh now your asking advanced questions ;) I actually can’t give you a good answer. I am quite sure my modules aren’t that power conservative and I have been able to power about 10of them with one of these. But again, they aren’t that expensive to make so if you have a power hungry module just make a psi for that module.
The 7812 and 7912 regulators are rated for 1 amp. However it depends on the heatsink, if the input voltage is close to 12 volts, then a smaller power supply heatsink will be required. The voltage drop occurs through the heat.
@ so i think power consumption of the basic ones is between 10 to 20 ma so total not higher than what 70 ma?
5 лет назад
con fuzz as long as you put larger caps instead of the 470uf. 2200,3300 or 4700. Then you can drive much more. It’s just that with these small caps I used in the beginning introduced ripple when too much current is drawn.
Kristian Blåsol I bought some super cheap diy power supply kits. they give -12 +12 and ground, and have 2200 microfarad caps, but all the caps are rated at 16v. does this mean i will be able to power less units?
5 лет назад
AdmiralXiphos if you mean because it says 16v then that does not matter for the amount of modules. 16v is just the max voltage the cap can handle. 2200uf is good for many modules without ripple I think.
Kristian, when i switch off is it supposed to go to 0V instantly? mine is 26V across positive and ground, 2V across negative and ground, and 24 V between positive and negative. Im trying to figure out what i did wrong. the voltage between negative and ground powers off instantly but not the other two.
Well it won’t be instant as there are some caps that hold power. If you have load on it goes to 0 faster. But don’t add anything yet as your voltages seems strange. I would say you have connected gnid and -v together or with just a resistor in between? I would make sure all caps are turned correct and double check the negative regulator. Do you have a picture?
Ok, so I put this together and have some issues, maybe you can help. I get +10v at positive and 0 at negative?!? What is input voltage supposed to be? I'm getting 12v dc and 25v ac from the input jack, before the switch. Pretty baffled since this is fairly simple. I even tried it on a breadboard with the same results. Any ideas? Thanks
6 лет назад
??? That sound like a strange wall wart. Giving 2 voltages. What is it rated at? It should be 12VAC or a bit higher. Not more than the regulators can handle.
@ They are labeled 12v output, which I assumed was ac. Yeah, let me check what is coming directly from the wall wart. Maybe it's the input plug? Can you give any suggestion on an input plug model? Thanks so much (still a fun build!).
Did some research. Turns out I'm using a 12v DC wall wart. Not easy to find 12VAC lying around, so back to the internet. Stay tuned. Thanks
6 лет назад
Spot 20 ok then we know the reason. AC wall warts are usually cheaper as you skip all the rectifiers and regulators etc that is in the circuit we make instead. Hope you find something that fits.
@ Yes, finding good choices on Jameco and Amazon. Plus I'll start getting parts for the 40106 :). Check out this page: syntherjack.net/modular-synth-wall-wart-psu/ reminds me of this project. Thanks and take care!
that's very interesting but the way you name your videos makes it difficult to follow each episodes easily. This is one part O , where is part 1 ?
4 года назад
Ok. In the description and the pop up links there is a link to a playlist where you will get all the videos in the MiaW series in the correct order (mostly) :)
Hi i don't know how you use your facebook but i'm trying to tell you there is an error on your website (i think it's your's) about tl071 pinout. This image comes up in the first results on google, might be a good idea to fix it. Look this link www.synthdiy.com/show/?id=164
Very interesting.... although I'm not interested in eurorac at all. thx 🎼
4 года назад
Well. Eurorack is just a dimensional measurement really. Just make a bigger or smaller panel and it’s not eurorack anymore 😜. I just use the most standard format for simplicity... :)
I see that you don't have a lot of views, just know me and other people do appreciate the videos !
Thank you. Such is the way of the internet search algorithm. 😅
Teun
You (" hi. "M,m,m,m,m,mmmm mmmm, rm am,,, ,j
This is by far the best series on RUclips. Has me super excited. Some guys promise a series but then only do 2/3 videos. Keep up the great work. Came across your name based on your comment on the All About Circuits VCO website
@Neil Dakota Get the fuck out of here.
Scams...
Dude. I’ve been looking at modular for a month or so now. I love your channel and your presentation style is awesome. Thanks for this series!!
Hi Christian. Thanks for making this series.
I've been looking for a guide this comprehensive to help me push through to the end of the project after so long. Thanks for the amazing syllabus!
Hi Kristian. I am just getting started with DIY modular systems. Thank you so much for this series!!
As someone that really wants to get into this world, I am very excited to watch your videos!
I just build it and its working like a charm! This is actualy my first (succesful) PCB project, I plan on following your series and build other modules as well as an excuse to learn about electronics. Thanks for all the work you put in your channel man :D
That is great to hear! Hope to see hear what you create as you build along :)
You are amazing good sir. I've been playing around for a while breadboarding but have had a hard time getting started. Thank you so much!! Really like the PSU
I am so impressed by this series. Have been building little 9v modular circuits for the last year and have been daunted by the step into "real" modular, but this series shows an amazing way in. I have looked at many of these circuits earlier, but this does it all together. Thank you!
Thank you for your kind words. I hope this series gives you the “kick” you need as it did for me. As you say some of these circuits I’ve been looking at for years but never found the motivation to build them as I didn’t have any other modules. Doing a bunch in one go does kickstart things off. Good luck and let us know your progress :)
I love that you made these videos, thanks from the bottom of my heart, as a music student who is interested in electroacoustics in Perú.
Great series! I wish I had found it a few years ago!
I did it! I blew up a capacitor on my first attempt but made another one and it worked. Strange that schematics show the lm7819 wired the wrong way I made a hopper and wired it up as per the schematics fired it up and it got real hot real quick. Wired up as shown in your image and it works great now.
I even got the ac to 12v ac adaptor for 50c after rummaging through a box in a thrift store.
Thanks for doing these. I'm in the rabbit hole now!
Good thing starting with that. Now you now how that sounds and smells like. 🤪 Is the schematics I made showing the 7912 the wrong way? If so let me know so I can fix it. Well. Welcome to the rabbit hole. It’s getting crowded here. 🤣
@ The pins as shown in mad mouse schematics don't seem to be right ( I am new to this so I could well be wrong) it did cause some confusion but when I did as you said in the graphic at 23:09 it worked just fine.
I already did the 40106 module but managed to drop a large globule of solder right across the legs of the chip so made a mess of it, I got it working eventually (always check your earths, right!) but it's temperamental so I might well just salvage the pots and jacks and the funky face plate I did and start over. I'm very much a beginner but enjoy it immensely, even the mistakes! you cant feel like a mad scientist unless you blow something up :D .
Right on. After some research I'll be spending a bit more on building a variable voltage psu. I'll be building all the other modules you've posted. Thanks for these videos
Hell yeah this is EXACTLY what I'm looking for
Dude! This video series is a godsend! I have spent months searching the net and reading old synth manuals trying to figure out how to begin a diy synth and it's maddening. Lot's of half answers, dead-ends and much ego. Anyway, love the videos and I have begun. Thanks so much for doing these videos. Some questions/comments - can you do a video showing how you extend the power from the power supply to the modules? And, how do you determine the limit of modules for the power supply? Thanks again, and off to Patreon!
Thank you for your kind words! Its great to hear that you have begun your Modular Journey aswell :) I felt the same as you did, and I found that there was no real tutorial for making a modular, that is one of the reasons for this "series" apart from the fact ofcourse that I have a modular now :D
As for your questions, I only use dupont cables for power, and have made a few 3 pinned "extenders" so I can plug one dupont in from the power supply and then two cables out. As for the limit of modules, I go by the "when the cables dont reach anymore, make a new PSU" ;) The psus are so cheap to make that I do the safe before the sorry... I have one psu that I have 9 modules in, and it doesnt seem to be a problem with it. I have three power modules in my modular right now. but then I have a few more modules than are shown so far in my videos. I have a few episodes left... ;)
@ Thanks Kristian. I am waiting for parts, but I actually looked at the jumper cables I bought and they are dupont!?! And with some header materials I think I now understand some methods to transfer the power. Thanks again, I'll provide some pics when I'm completed.
HI Kristian what is that rack box you showed "used for telecoms, they throw these out! - I need to get down my local recycling tip to look for these and bus power strips!
The rack boxes used for eurorack is a very common rack system used by many industries. Telecom is one. So yeah check your local recycling place. There could be a lot of those out there.
How do you not have a zillion views on this yet?
Lol. Not a zillion people who wants to build a modular. 😉 good for us as components might get hard to get when a zillion people start sourcing. ;)
Hi, thank you very much for this playlist. You are saying everything in easy way to understand. Thank you
I like how you pronounce "week" ;) Also, love this series of yours, very helpful for DIY noobs!
Looks in junkbox, finds 12VAC@1.2A wall wart. Sweet!
You got a new subscriber at the lunchbox. Nice work!
Subscribed! This is exactly what I was looking for.
Fantastic mate, thanks so much for doing this series up!
Incredible work and effort put in to these videos. Big love
Thank you! Hope it will help you build a modular :)
This Channel is put gold
How much power draw could it handle? Also don't you need a heatsink for the voltage regulators?
Really like this series, thanks a lot for doing it. Just want to point out that on the schematics pdf of the psu, on the -12V side, one of the caps (C6) is marked with wrong polarity (realised this the smelly way c: )
Oh no! I am so sorry. I have fixed the schematics. Thank you very much for pointing this out!
kinc128 diodeee
amazing channel conveniant I just started electronics course to make modular synths
Hi Kristian. I was wondering if u could do a video looking back at this project (the whole modular) and telling your thoughts, regrets etc conserning the build. I mean that if there has been something you would do differently it would be nice to learn from your mistakes. Good diy content!
Hello, I will do a recap once I am done there are still two “days” to go :). BUT! I was thinking just today (after a failed adsr build) that I should do a video about all the failures I’ve done during this build aswell. In most videos (not only mine) it looks mostly as if everything just works. But there is a lot of error checking and plain fails that isn’t that good content if shown too often. But once in a while it is good to know that failing is part of the process and a way forward. So interesting that we had similar ideas. :) And thanks!
Thank You Kristian . well done
wow! det här är så himla bra gjort! tack för att du visar!
Tack för att du tittar. :)
great series! you should add some ginko grains to that modular, they are arduino based and super simple and versatile! i built five! just an arduino nano, 3 pots and four jacvks, serve as vco, sample player, really cool!
Thanks for the tip. Ginkgo is already on my list along with some more fun arduino stuff. :)
love your videos alot keep them going .
I’m confused by difference between left and right diagrams at 19:42. The right schematic matches the original mad mouse schematic, but the one on the left changes the wiring of the 470 uF capacitors. Is there a reason for this?
I’m new to electronics, so maybe I’m just not grasping a simple concept…
[edit] I found the schematic in Dropbox and it is drawn as depicted in the original Madmouse spec. I’ll just follow that. This video series is amazing
This is exactly what i needed. Thanks a ton
You are very welcome. And welcome to the rabbit hole. 😉
Thanks to your channel I'm starting it out in the modular world! I ordered a few parts kit, but it would mean a lot if I could order your power supply kits, would you make them available anytime soon? I would order 10 units to Canada right away. Thanks again!!!
Hello. I’m working on a better one with bigger caps from the beginning that might be better for modulars. I’ll try to get them up around new year.
It is great you are beginning your modular journey! It is an awesome instrument. Let me know of any jams etc you do. Would love to hear it. :)
@ Awesome! I'll make sure to share my results as soon as the first modules will be done :D
Yeah that was the video i was talking about the other day ahahaha. It's funny how i discovered you before knowing it was you
Ah! 😅 well now you know I am me. 😜
Hi Kristian, Very nice series of videos here... For us beginners, could you show how to lay the scematics out on the vario board?
An interesting request. Since I need a third! psu for my modular it is quite fitting in time. I’ll post a video in my other channel in a few days and send you the link to it.
@ Sounds Awesome! Would be very nice with a video about it, also something that could be a little bit general. Not just for the PSU, but how to generally approach the task of looking at a scematic and convert it to a vario board... -and also, thank you for taking the time to make these videos, it is very much appreciated!!!
@@emilsebastianbll1610 Hello again Emil, I have made a video now that hopefully can help you and others to "dare" take the step into soldering on veroboard. ruclips.net/video/2uh50mXFJyY/видео.html Welcome to the Electronics experiments club ;)
this series is gold! -but: a few beginner questions on this power supply: when the wall wart Adapter gives ac current - how you can exactly say in the schematics where is plus and where is minus when the poles of the source are alternating? when i want to plug in a module, to give for example the cd40106 plus and ground....how does this work? or do we Kind of generate "fixed plus and minus poles" with this circuit, and thats why you measure at the end the Volts in dc configuration??? and: from the Adapter on, the "ground line": does this first ground Symbol do anything else then just say it is the ground line? because: how to ground the ground??? very naive, Basic questions:) thanks a lot for your help!
ok. i watched the "really slow solder"-Episode. the ground question is cleared now. the first question not^^
@@jungstrauma4 in case you still need to know, an ac PSU/wallwart doesn't have + and - connections
I like how you used eurorack measurements on the lunchbox lid, that way all you need is a hot knife to transfer modules into a real box ;-)
Thats true. Didn’t think of that. But yes that would def. be possible to get even cheaper modules. :)
@ and so colorful ;-)
Thanks for these videos!
My pleasure! Hope you build a modular for yourself! :)
Hey Kristian! I really love your videos, they're amazing!
Already built the power supply unit and an Atari Punk Console module, it took time until all the components arrived from aliexpress :) now I'm having some troubles with the 4046 vco :)
but my question is more basic - I want to connect the output signal to my audio interface but I'm afraid the output voltage is too high. shouldn't we make an output module to convert the signal to line level? thanks!
how do you name these panels? what search words should i use?
To find the other videos? There is a link in the description to the playlist. Or just search for “modular in a week”
@ no the "telecom racks" do they have an official name? I looked for server racks but can't find any cheap ones
Vader Porgel ah ok. No the way you “search” for them is to visit your local scrap yard or recycling plant and look in the electronics bin and see if anyone has thrown away anything like that recently. ;)
Vader Porgel otherwise it is called eurorack. And it is expensive unfortunately.
@ idd this looks really nice, i'm going to search for one :) tnx for these vids! very helpful!
Hi Kristian, I really enjoy your Videos and you inspired me to make some synths on my own. It worked really well for now :)
I have a question, how do you print on your AluPanels? I don't have a Laser-cutter but I do that the old scool way withs saws and drills, now I just want to print some designs on them.
Thanks again,
Renato
Can you please share a hi-res image of the psu? I don't follow why there are multiple pins for +v, -v, and gnd. Additionally, in the vco video, I see you added 3 pins for gnd and two pins for +v. Could you elaborate on why so and how you connected the power to modules? Thank you!
I have trouble finding an ac power supply like that
Man why are my 35V 1000 uf caps so tiny, but your 35V 470 uf caps so HUGE. I'm convinced I'm about to blow some shit up.
I will report back with results.
I think mine are higher voltage. Just make sure your transformer doesn’t output more than your caps are rated and you should be fine. It is always good with a bit of headroom though.
what is the length of the found "telephone" case? is it regular 84hp?
Yep. Just a regular rack mounted eurorack case.
Thank you sooooooooooo much, man! keep it up with the good work!
Hi. Thanks for a nice introduction to modular. I'd love to tag along on this build to dip my toes.
I struggle to find the 12 volt AC Wall Wart adapter and LM7912.
Is there some components I could use instead? And how do I figure that out?
The easiest place to find 12vac is near halogen lights. Often used with those. 7912 you should be able to find in most online electronics stores. Which country are you in?
@ Hi. I'm in Denmark. Amazon shipping is costly :D
And no danish shops have AC adapters. Is AC necessary? Or could i use DC? I have a lot of those :)
Hi Kristian, thanks for the series! It really helps! For the PSU example, what would you do to improve the circuit if more current is required? let's say 3000mA?
7812/7912 handles 1A max, and 12VAC adapters usually are also 1,65/2A max, besides that you would also need higher capacitance caps at least
Sorry I seem to have missed your question. Adding more capacitance is one thing also raising the input voltage to 15-18vac and as Daniel says the regulators has a max of about 1A so after that you need to either build another psu or find regulators with higher output current.
Hej Kristian thanks for the video and what promises to be a fantastic build series!
I'm about to dive right into the PSU but I've got a question:
How many milliamperes would you recommend for the 12VAC wall wart? Thanks again!
I think I the one I have is around 800 mA. It all depends on how many modules you’ll want on each psu. For all my 30+ modules I use three of these.
I'll keep that in mind. Thank you!
hey! this whole project looks awesome and i would really want to have a shot at it with some friends. i have really no experience with anything diy electronics, and starting this looks pretty scary and complicated, especially the soldering and how everything links up. i honestly wouldn't know where to start, would you happen to have any resources that could help someone like me figure this out?
C5 blew up... The polarity is correct and the capacitor was new. The led lighted up and all was perfect until I heard a hiss and realized that it was throwing smoke all over the place. I'm new to electronics and don't know why it blew up. Any tips for troubleshooting?
I have Just built this PSU and It works perfectly on the +12v and -12v side,but the LED fails to light up,d'ora anyone know what May be the cause?(I triple checked the connections but they seem ti be fine,the resistor Is in series with the LED)
Hi! I just soldered it, works fine, I have my +12v and -12v on my multimeter, but within a minute it started to smell bad and I noticed my 7912 was overheating... It was very very hot. Do you know what I should do about it?
Also, I think the case is called a card cage
this man is a god
Nice informative videos! I have one question, what are the huge caps on the board? I'm looking at the schematic, and none of the caps have values that might cause the cap to be that large.
On the psu? That would probably be the 470uF. They have to be 35 v or larger that makes them quite big in size. It is explained why in the video. I believe I used 40 or 50 volt caps.
Kristian Blåsol ah, ok! Thanks for clearing that up!
How do you mount these to the panel?
Sorry I don’t fully understand. I mount the panels with screws if that is what you mean. The pcbs are either hot glued to the panel or just held in place by cables to pots and jacks.
Qué genial contenido! Saludos desde Perú.
Gracias! 😜
Hej, jag funderar på att börja bygga synthmoduler och denna serien är fantastiskt inspirerande. Jag upplever det som en ganska hög tröskel att börja, till och med med inköp. Du länkar mest till ebay. köper du där och hur hanterar du tullens momsavgift?
Halloj. I början gjorde jag det innan postens avgifter kom in i bilden. Numera köper jag stora paket med komponenter från lcsc.com. Mindre beställningar görs på electrokit.se. Du kan köpa ett kit till psun av mig billigt i tindie storen. Och jag kan skicka med en 40106 så du kommer igång. ;) kan även rekommendera mina prototypnivå för enkelt lödande. ;)
Men de första avsnitten är rätt enkla och bara du kommer igång och läser scheman så kommer du säkert igång. Psun är jättelätt att löda ihop. Och jag har även gjort en jättelångsamt video för hur man löser ihop den på vanlig veroboard.
Hoppas du kommer igång och får ihop en modular. :)
@ Det lät ju utmärkt! är det denna du syftade på då? www.tindie.com/products/Sourcery/-12v-and-5v-powersupply-for-eurorack/. Går jag bara in och beställer en sån då?
Jag förstod inte vad du menade med att dina "prototypnivå". vill du utveckla den meningen?
Tack för hjälpen!
Niclasrydhe sorry menade prototypkort :) Har dessutom slut på psun. Kom nya kort idag och nya komponenter förhoppningsvis på torsdag. Så då har jag så jag kan skicka. Eller ta den mindre psu om du vill komma igång fort och ännu billigare....
@25:30 Do these racks come with rails or you've added them?
They came as a whole box with rails. But they were scrap from some phone station or something. It is used in a lot of places and can be found second hand quite cheap.
dang man thank you so much
Great vid! one question : I just spent one hour trying to find a 12v ac power supply, i didn't find any under 40 euros... is it so uncommon? where did you get yours? it's frustrating, i have all the components!
Halogen light. They are almost always run on 12v ac. Most wall warts have a transformer in them which is ac and then the circuit inside is what makes it into 12vdc. A 12v dc wall wart is a transformer and half of this circuit. Kind of. :) But again halogen lights is the easiest place to find it.
probably a noob question but, the easy eda schematics that you provide in the dropbox.. is there a way to convert them directly to easy eda file or pcb? or do I have to manually retrace them in easy eda?
I accidentally ordered some copper clad plates & I was wondering if I could directly convert the files to pcb format & create pcbs at home
I don’t have the easyeda files. But yeah you can print a pcb on an overhead paper and then transfer to a pcb and etch it at home. But I really would recommend you just order from a pcb manufacturer. It’s quite a lot of chemicals and hassle. :)
Hey, is it possible to use 1N4007 instead of 1N4001? I don't have 1N4001. Thank you, i really appreciate your videos.
Probably.... they are all power diodes. Don’t plug any module in before you have checked.
@ Do you think that this transfomer could replace the wall adaptor? www.aliexpress.com/item/32973106103.html?spm=a2g0s.9042311.0.0.27424c4drsR4RQ because i have checked the output of it (just the transfomer) and it shows me 4V AC but it lighted up a 12V light.. I don't really understand the difference between adaptor and transformer...
Hi again Kristian! I'm building this as to have it on the bench for testing modules (assume will be using 1-2 conected max). Can I replace tje 470uf for any other bigger value? (Have a pair of 1000uf 35v and 3300uf 50v with me)
I'll answer myself: used the 1000uf ones and apparently worked properly!! Super thrill to start working on some modules!! (Still waiting for parts to came).
Your series is one of the biggest reasons why I got the iniciative to try and build a modular, just want to really thank from the heart for the work you've done (and keep doing). Love from Brasil Kristian!!
Sorry for late reply. And the answer was as you might expect yes. ;). The bigger the caps the more modules you can drive with it :)
Thanks for your kind words. I am happy that so many people have begun making a modular just because I tricke... ehum ... I mean showed how easy it is. 🤣
digging the videos!
Question! when connecting the PSU to your modules, are you just going from a header on the PSU to a header on the module? or are you using any form of a bus board?
Mostly directly from the psu. I have in some cases soldered a few headers together to get an extender/splitter.
perfect, thanks
Man i wacth it rightnow love it thanks bro i m started to day and thaanks thanks thanks billion time thabks
So, is there any particular reason we need this PSU with AC/AC 12V out power supply? Why not get a usual AC/DC 12V instead? Thanks in advance for your reply
Many of the modules in a modular is run from a +/-12v power supply + gnd. An ac/dc adapter just gives you +12v and gnd.
+/- and gnd takes a few moments to understand. But if you don’t want to make a psu then you can make all the modules that just requires +12v and gnd. You can also buy ready made psus for +/-12v. Get one with 5v aswell if you buy one.
@ thanks so much for your patient reply. Somehow I missed that point, but now I get it. Already soldered the PSU though, and waiting for the arrival of the ac/ac adaptor to test it. Thanks you once again for your tutorials, they are very helpful!
Are the max amps provided for both +-12v limited by the AC-AC power supply? Assuming it's a 1amp supply each rail is probably
Oh now your asking advanced questions ;) I actually can’t give you a good answer. I am quite sure my modules aren’t that power conservative and I have been able to power about 10of them with one of these. But again, they aren’t that expensive to make so if you have a power hungry module just make a psi for that module.
@ Thanks thanks! Love the videos!!
The 7812 and 7912 regulators are rated for 1 amp. However it depends on the heatsink, if the input voltage is close to 12 volts, then a smaller power supply heatsink will be required. The voltage drop occurs through the heat.
what is the typical amount of your modules you can run on one of these
I’d say not more than 5-6 of the basic modules. The trouble started with the clock divider and all the LEDs.
@ so i think power consumption of the basic ones is between 10 to 20 ma so total not higher than what
70 ma?
con fuzz as long as you put larger caps instead of the 470uf. 2200,3300 or 4700. Then you can drive much more. It’s just that with these small caps I used in the beginning introduced ripple when too much current is drawn.
Kristian Blåsol I bought some super cheap diy power supply kits. they give -12 +12 and ground, and have 2200 microfarad caps, but all the caps are rated at 16v. does this mean i will be able to power less units?
AdmiralXiphos if you mean because it says 16v then that does not matter for the amount of modules. 16v is just the max voltage the cap can handle. 2200uf is good for many modules without ripple I think.
Kristian, when i switch off is it supposed to go to 0V instantly? mine is 26V across positive and ground, 2V across negative and ground, and 24 V between positive and negative. Im trying to figure out what i did wrong. the voltage between negative and ground powers off instantly but not the other two.
im getting 5V across LED
Well it won’t be instant as there are some caps that hold power. If you have load on it goes to 0 faster. But don’t add anything yet as your voltages seems strange.
I would say you have connected gnid and -v together or with just a resistor in between? I would make sure all caps are turned correct and double check the negative regulator. Do you have a picture?
Ok, so I put this together and have some issues, maybe you can help. I get +10v at positive and 0 at negative?!? What is input voltage supposed to be? I'm getting 12v dc and 25v ac from the input jack, before the switch. Pretty baffled since this is fairly simple. I even tried it on a breadboard with the same results. Any ideas? Thanks
??? That sound like a strange wall wart. Giving 2 voltages. What is it rated at? It should be 12VAC or a bit higher. Not more than the regulators can handle.
@ They are labeled 12v output, which I assumed was ac. Yeah, let me check what is coming directly from the wall wart. Maybe it's the input plug? Can you give any suggestion on an input plug model? Thanks so much (still a fun build!).
Did some research. Turns out I'm using a 12v DC wall wart. Not easy to find 12VAC lying around, so back to the internet. Stay tuned. Thanks
Spot 20 ok then we know the reason. AC wall warts are usually cheaper as you skip all the rectifiers and regulators etc that is in the circuit we make instead. Hope you find something that fits.
@ Yes, finding good choices on Jameco and Amazon. Plus I'll start getting parts for the 40106 :). Check out this page: syntherjack.net/modular-synth-wall-wart-psu/ reminds me of this project. Thanks and take care!
Like. I'm watching
amazing
im trying it
Thanks! Great do that let me know hear how it turns out!
that's very interesting but the way you name your videos makes it difficult to follow each episodes easily. This is one part O , where is part 1 ?
Ok. In the description and the pop up links there is a link to a playlist where you will get all the videos in the MiaW series in the correct order (mostly) :)
Hi i don't know how you use your facebook but i'm trying to tell you there is an error on your website (i think it's your's) about tl071 pinout. This image comes up in the first results on google, might be a good idea to fix it. Look this link www.synthdiy.com/show/?id=164
Very interesting....
although I'm not interested in eurorac at all. thx 🎼
Well. Eurorack is just a dimensional measurement really. Just make a bigger or smaller panel and it’s not eurorack anymore 😜. I just use the most standard format for simplicity... :)