DIY Synth VCO | Part 1: Sorting the Schematic
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- Опубликовано: 26 ноя 2021
- Here I'm showing the progress of the PCB design I'm working on, it was converted from the original CEM3340 stripboard design on Sam's website, further modified with advice from the members of the LMNC discourse and of course Caustic who helped quite a bit and so yeah... you should check em out! Links below, hashtags all that good stuff
Original board
www.lookmumnocomputer.com/pro...
Caustic's improvements
lookmumnocomputer.discourse.g...
EDIT:
If you want to follow the ongoing progress you can follow that here:
lookmumnocomputer.discourse.g...
When I've completed this project, I shall post it up somewhere so you guys have access to it as well if you like it or are interested in building your own!
#CEM3340
#VCO
#LookMumNoComputer
#PCBdesign
#DIY
#Audio
#Electronics
Various keywords and such
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Excellent. Your presentation got a subscriber. I'm currently at the early stages using the LM358 for the VCO, so you have my attention. Good job on the schematic.
This things gonna kick ass
Awwww I hope so! 😅 Thank you so much for the help and conversation too!
I am interested! I ordered a 3340 for a VC Clock (EMM), but when I check the component list some values makes no sense (100uF plastic cap!!!!!!🤔) so I will have a look at your design!
Ah LMNC excellent. Purchased a number of his boards and face plates. Getting components is proving somewhat difficult especially as I have no idea what I am doing lol. Built his Super Simple Oscillator and not a peep out of it. Guess I fried something. Will watch this with interest.
I've found most of the components from tayda electronics, plus they're super cheap and reasonably fast shipping.
Think caps are about $7 USD for 1000 ceramic caps, just an example. Think Jack sockets are like 50c and pots are about 35c I think.
Probably different by a little, but they are very good, mouser is good too, slightly more expensive, but good.
Of course eBay, but I've found most everything either from tayda or mouser. Except the electric druid parts.
Hope this helps!
As to the support simple oscillator, the schematic it's backwards on the transistor I think, unless it's been updated, but you want it
Collector to 100k output resistor and emitter to the LED to ground, you have to cut the middle leg too. Otherwise any cap will work fine smaller than 300uF
Cheers for checking out the videos! 😁👌
@@SpectrumDIY Awesome thank you. Will check the LMNC Super Simple Oscillator schematic got it ages ago so could be wrong way round.
Comprehensive! I just built a VCO kit from Synthrotek a few weeks ago which was 3360 based, but it didn't even have the hard or soft sync inputs, so your project will be interesting.
Having designed and built a few eurorack modules on strip boards from scratch myself over the years, one of the things
I have only recently started putting on all my new modules are 10 ohm current limiting resistors on the +12, -12 and +5v power
inputs. But I guess this is not really very necessary on a proper PCB design. As all my module designs are strip
board, this little trick just helps protect me from any 'magic smoke releasing' incidents...
Have fun!
Thank you! I hope so! I've been working on the rats nest the last few hours 😆
wait, so what is this for??
It's a voice for a synthesizer, you start with a VCO (Voltage Controlled Oscillator)
@@SpectrumDIY ah