incredible, I've watched all of this playlist, and cant wait to start building. we are in covid 19 lock down here in England, i think i have enough components to start building some of these modules. I admire the amount of work you've put into this series and thank you so much for sharing it.
4 года назад+3
Thanks! I’m glad I and a strange virus can get you started on the modular path. 😉
Thanks for all your effort Kristian. Very nice series this!. Would it be possible if you update the schematic with the buffered output where you talked about in your epilogue video? Would be very nice.
Hi kristian, i just built this module twice and cant get it to work, using 4046be and lm358. first time i messed up becausei forgot some grounds but now i have checked everything 10 times and its exactly like the schematics... just to be sure.... i am powering the 4046 with vdd 12+ and vss ground. and the lm358 with v+ 12v+/ v- 12v-. allso i put extra decoupling caps between 12v+ to ground and 12v- to ground. am i stupid? going nuts over here ;-) anyways, thanks for the great series. i learned alot from you, i have even completed my first homemade design for the vclfo by electric druid. if you are interested i can send it to you. let me know!
@@Yoet-d5e I got it Yesterday! I just made the schematic from hackaday and conectet over pin 9 to the orginal schematic from the all about circuits article. At the pin 6 of the Lm358 i ad a 10k trimmer conectet to + and - 12v and a cv jack. Then instead of a 10k pot i take a 100k pot andthen i conectet the lm358 over pin 7 to pin 9 from the 4046. I think something is wrong with the schematic from kristian... But something is special.. as i wont today play with it it doesnt work anymore. tomorow i will search the problem but if you everything doing like i sad it should work(i hope ;) )
Hello! Love this series of videos, thank you for putting it together. Really looking forward to building more, particularly the colored noise module, that's next on my list :). Can I power op-amps and other applicable chips with +12/-12 and the CMOS chips with +5/GND instead of +12/GND? Or will that mess with how well voltage levels at outputs work with inputs if I'm powering some modules with 5V and some with 12V?
@@deerfeeder Thanks for the reply! Kristian's circuit also runs on 9 volt/GND, the 40106 has a large voltage range. I ended up powering it using a 3.7V battery for testing and the output voltage worked with my other modules, which pretty much answered my question! I haven't measured the output voltage depending on my what I power the chip with yet... wonder what the different is between powering it with 12V vs. powering it with 3.7V.
4 года назад
Yes you can power each circuit with different power that is what I do in my colored noise that I make.
Thank you for this series! Really enjoying learning about synths one module at a time. Question: Would it be possible/useful to make a module to output CV?
6 лет назад+2
Thank you and yes! That is coming. Right now since I make the series with one module each day we only have Vcos so far. The really slow oscillators on the 40106 is what I use as a cv source now on day 1. On day four I make LFOs which are made just for putting out cv. :)
Greatly appreciated videos. Keep up the good work. I was wondering if this would work with +9 and -9 volts instead of 12?
4 года назад+2
Thank you, your comment is much appreciated aswell :). And yes +-9v should work just fine. Or actually just 9v and gnd as it is a cmos chip. Minimum is around 5v and gnd for cmos chips. Anything above that (and not higher than 13v I think) should work.
Love the series, I have started building a couple of modules, decided by the parts I have laying about, while waiting for new. I was just wondering, what is the purpose of the trim-pot in the schematics?
5 лет назад
That is for trimming the CV input, it is part of the CV-summing mixer.
I was just confused about how available I should put the adjustment. How often is something like that adjusted?
5 лет назад+1
gregersn never. Or once when you trim the cv signal to what you want. You are thinking of an attentive tree for the input signal. Which in a Vco isn’t that useful but if you want one add one. But this trim pot affects both the cv input and the freq knob. Which might be interesting aswell but...
Okay, sounds like will just have it as a hidden trimmer now, then. Can just make a new one later if this is something that is actually worth experimenting with. Thanks! :)
what you marked as signal in seems to do both hardsync and wavefolding. would it be possible to isolate it to just be a VCO with a built in wavefolder? (or maybe just a wavefolder...) that would be cool as hell.
actually on further inspection of the oscilloscope it could be something completely different... I have no idea. back to square 1.
5 лет назад
Lol. Or just accept it as a cool feature and use it. 😉 No but seriously. Whatever you find out please share it. The 4046 is a very interesting chip which can be used for a lot of things. Have you seen Thomas Henry’s X4046 vco? It is way more powerful than this one.
@ no, I'll give it a look. I may well not make this oscillator, because right now I'm just binging all your miaw videos so that I can decide what modules to make, but given how funky this one is I have to say I'm considering it.
5 лет назад
You’ll see when you get to the noise modules how this one can be used to make digital noise from white noise or make random gates so it is really useful in all its simplicity. 😉 Hope you find some modules to build! 👍
@ I'm late here, but pin 11 is another voltage control for the oscillator. Probably more accurately, it's a current control, since the VCO will change frequency with different resistor values to ground.... the voltage isn't changing, but the current leaving the pin is changing. I use pin 11 as a frequency modulator for my 4046 VCOs, with a 100K resistor to ground and a lower value resistor to a CV input. I think I used a 10K resistor in my latest beeper module. Vibrato, exponential FM, linear FM if you replace the resistor to CV with a capacitor. Hmm, listening to the results, it does seem like something else is changing the waveform. As though pin 11 only does something when the output of the chip is low...? So I may be very wrong!
Has the 4046 Inhibit pin 5 been missed off the schematic ? I built the 4046 without the summing amp and it did not work until the INH was tied to ground.
Hi Kristian! Build this one recently, but I think it is not working properly... The range is very very narrow, and cv in does not work properly... Opposite to signal in which works kinda like cv should :/ Do you have any idea what could be happening? Where to look? Such a simple project that really intrigues me what´s going on!! Could it be the chip? I have different IC, 2 brands, same description: CD4046BE
Just read in the hackaday commments that another fellow couldn´t get it to work also with 4046BE and BD :/ Damn, those are the only ones I found around here. Guess have to wait for China times
@@julieftherulies no, I don't think it is. I bought other ones and didn't worked also... Someone told me that other pins should be connected either to gnd or v+ if I recall correctly, but as I don't understand much I left it in the drawer. Build the René Schmidt 4046 vco that tracks 1v/oct, has pwm and saw out and is pretty simple also. Check it out!!
Is the print on the panel a sticker-print? Looks great.. Or miss I something... How did you made this layout...with Gimp?
5 лет назад
The panels are made in Inkscape, and then I send it to a laseretching firm. So the material is a really flimsy name tag kind of material called lasermax. I need to add a standing piece on the back for the panels to not bend when plugging things in and out. Cheap though. Around 2$ per panel.
@ k thanks.. I just have a Behringer Neutron and want to make some eurorack modules myself. I start with easy ones, multiplyers attendators etc. I have now a low cost 1mm aluminium plate for panels. For the small modules this is thick enough, i guess and hope. Now i need a method for the graphics on this panel.
5 лет назад+1
A sharpie pen is enough for some nice designs if you have watched LMNC. ;) a few others who made a modular with me used paper that they glued on the panels. Might also work.
Nope... There is no Exp converter in this one. If you want a really simple VCO that tracks decebtly and that you can build yourself make this one instead: ruclips.net/video/b66r0yfY1fE/видео.html&lc=UgxWIKQB6ARXXlW-kl94AaABAg That way you also get another waveform (Triangle) and if you follow suggestion in a later video you can also make it into a LFO...
I am glad I found this channel, building vco’s is lots of fun.
incredible, I've watched all of this playlist, and cant wait to start building. we are in covid 19 lock down here in England, i think i have enough components to start building some of these modules. I admire the amount of work you've put into this series and thank you so much for sharing it.
Thanks! I’m glad I and a strange virus can get you started on the modular path. 😉
Glad to know how to make 3 different VCO’s!
I am very motivated now to start this project. Thank you for this amazing series. That is some serious dedication!
Thanks for all your effort Kristian. Very nice series this!. Would it be possible if you update the schematic with the buffered output where you talked about in your epilogue video? Would be very nice.
These videos are great
Hi kristian, i just built this module twice and cant get it to work, using 4046be and lm358. first time i messed up becausei forgot some grounds but now i have checked everything 10 times and its exactly like the schematics... just to be sure.... i am powering the 4046 with vdd 12+ and vss ground. and the lm358 with v+ 12v+/ v- 12v-. allso i put extra decoupling caps between 12v+ to ground and 12v- to ground. am i stupid? going nuts over here ;-) anyways, thanks for the great series. i learned alot from you, i have even completed my first homemade design for the vclfo by electric druid. if you are interested i can send it to you. let me know!
I have the same problem...
Do you found a solution?
@@nimaschacher1907 not yet, but if so lets keep eachother posted!
@@Yoet-d5e I got it Yesterday!
I just made the schematic from hackaday and conectet over pin 9 to the orginal schematic from the all about circuits article.
At the pin 6 of the Lm358 i ad a 10k trimmer conectet to + and - 12v and a cv jack.
Then instead of a 10k pot i take a 100k pot andthen i conectet the lm358 over pin 7 to pin 9 from the 4046.
I think something is wrong with the schematic from kristian...
But something is special..
as i wont today play with it it doesnt work anymore. tomorow i will search the problem but if you everything doing like i sad it should work(i hope ;) )
@@Yoet-d5e while im trying to found out why it doesnt work i destroyed 5 pots :( haha
Well. One is flawless ;) if you find any errors in my schematics please let me know and I will try to fix them.
Hello! Love this series of videos, thank you for putting it together. Really looking forward to building more, particularly the colored noise module, that's next on my list :). Can I power op-amps and other applicable chips with +12/-12 and the CMOS chips with +5/GND instead of +12/GND? Or will that mess with how well voltage levels at outputs work with inputs if I'm powering some modules with 5V and some with 12V?
try the original hackaday version for that. it uses a 9v battery. there are also opamps for single power supplies like the lm358
@@deerfeeder Thanks for the reply! Kristian's circuit also runs on 9 volt/GND, the 40106 has a large voltage range. I ended up powering it using a 3.7V battery for testing and the output voltage worked with my other modules, which pretty much answered my question! I haven't measured the output voltage depending on my what I power the chip with yet... wonder what the different is between powering it with 12V vs. powering it with 3.7V.
Yes you can power each circuit with different power that is what I do in my colored noise that I make.
@ Oh, nice. Will probably build that tomorrow. Thanks Kristian!
I get a square out but after 30sec both ICs get super hot and shut down.
Does the 4046 solves that problem with heat that makes the sound out of tune?
Thank you for this series! Really enjoying learning about synths one module at a time.
Question: Would it be possible/useful to make a module to output CV?
Thank you and yes! That is coming. Right now since I make the series with one module each day we only have Vcos so far. The really slow oscillators on the 40106 is what I use as a cv source now on day 1. On day four I make LFOs which are made just for putting out cv. :)
Cool, looking forward to it. I'm waiting for payday to start buying parts.
Haha. Know the feeling.
Greatly appreciated videos. Keep up the good work.
I was wondering if this would work with +9 and -9 volts instead of 12?
Thank you, your comment is much appreciated aswell :). And yes +-9v should work just fine. Or actually just 9v and gnd as it is a cmos chip. Minimum is around 5v and gnd for cmos chips. Anything above that (and not higher than 13v I think) should work.
Love the series, I have started building a couple of modules, decided by the parts I have laying about, while waiting for new. I was just wondering, what is the purpose of the trim-pot in the schematics?
That is for trimming the CV input, it is part of the CV-summing mixer.
I was just confused about how available I should put the adjustment. How often is something like that adjusted?
gregersn never. Or once when you trim the cv signal to what you want. You are thinking of an attentive tree for the input signal. Which in a Vco isn’t that useful but if you want one add one. But this trim pot affects both the cv input and the freq knob. Which might be interesting aswell but...
Okay, sounds like will just have it as a hidden trimmer now, then. Can just make a new one later if this is something that is actually worth experimenting with. Thanks! :)
Oh, btw, the connection between pin 5 and ground is missing in the schematics. Spent quite a bit of time figuring that out earlier.
what you marked as signal in seems to do both hardsync and wavefolding. would it be possible to isolate it to just be a VCO with a built in wavefolder? (or maybe just a wavefolder...) that would be cool as hell.
actually on further inspection of the oscilloscope it could be something completely different... I have no idea. back to square 1.
Lol. Or just accept it as a cool feature and use it. 😉 No but seriously. Whatever you find out please share it. The 4046 is a very interesting chip which can be used for a lot of things. Have you seen Thomas Henry’s X4046 vco? It is way more powerful than this one.
@ no, I'll give it a look. I may well not make this oscillator, because right now I'm just binging all your miaw videos so that I can decide what modules to make, but given how funky this one is I have to say I'm considering it.
You’ll see when you get to the noise modules how this one can be used to make digital noise from white noise or make random gates so it is really useful in all its simplicity. 😉 Hope you find some modules to build! 👍
@ I'm late here, but pin 11 is another voltage control for the oscillator. Probably more accurately, it's a current control, since the VCO will change frequency with different resistor values to ground.... the voltage isn't changing, but the current leaving the pin is changing.
I use pin 11 as a frequency modulator for my 4046 VCOs, with a 100K resistor to ground and a lower value resistor to a CV input. I think I used a 10K resistor in my latest beeper module. Vibrato, exponential FM, linear FM if you replace the resistor to CV with a capacitor.
Hmm, listening to the results, it does seem like something else is changing the waveform. As though pin 11 only does something when the output of the chip is low...? So I may be very wrong!
*IC shopping intensifies*
Lol. Buy them all! 🤘
Has the 4046 Inhibit pin 5 been missed off the schematic ? I built the 4046 without the summing amp and it did not work until the INH was tied to ground.
Woops just checked Rev 1.1 of the circuit. The Inhibit is included.. Sorry :)
I wired this to a sequencer and apparently the input is inverted
Hi Kristian! Build this one recently, but I think it is not working properly... The range is very very narrow, and cv in does not work properly... Opposite to signal in which works kinda like cv should :/ Do you have any idea what could be happening? Where to look? Such a simple project that really intrigues me what´s going on!! Could it be the chip? I have different IC, 2 brands, same description: CD4046BE
Just read in the hackaday commments that another fellow couldn´t get it to work also with 4046BE and BD :/ Damn, those are the only ones I found around here. Guess have to wait for China times
@@alebrenna441 are you sure its an issue with the BE? whats the right one to use?
@@julieftherulies no, I don't think it is. I bought other ones and didn't worked also... Someone told me that other pins should be connected either to gnd or v+ if I recall correctly, but as I don't understand much I left it in the drawer. Build the René Schmidt 4046 vco that tracks 1v/oct, has pwm and saw out and is pretty simple also. Check it out!!
Is the print on the panel a sticker-print? Looks great.. Or miss I something... How did you made this layout...with Gimp?
The panels are made in Inkscape, and then I send it to a laseretching firm. So the material is a really flimsy name tag kind of material called lasermax. I need to add a standing piece on the back for the panels to not bend when plugging things in and out. Cheap though. Around 2$ per panel.
@ k thanks.. I just have a Behringer Neutron and want to make some eurorack modules myself. I start with easy ones, multiplyers attendators etc. I have now a low cost 1mm aluminium plate for panels. For the small modules this is thick enough, i guess and hope. Now i need a method for the graphics on this panel.
A sharpie pen is enough for some nice designs if you have watched LMNC. ;) a few others who made a modular with me used paper that they glued on the panels. Might also work.
4046 or 555 for square?
They both work for square. :)
Sweden:Where drinking is more expensive then an eurorack hobby
Haha that is so true. Most modules in this series can be made for less than a beer in Sweden. 😅 Cheers to that! 🍻
@ Great video btw Thanks.
does it track 1voct accurately//?
Nope... There is no Exp converter in this one. If you want a really simple VCO that tracks decebtly and that you can build yourself make this one instead: ruclips.net/video/b66r0yfY1fE/видео.html&lc=UgxWIKQB6ARXXlW-kl94AaABAg That way you also get another waveform (Triangle) and if you follow suggestion in a later video you can also make it into a LFO...
that is the last article in the hackaday series