A blog relating to vintage analog Roland "x0x" musical instruments. Primarily focusing on the SH-101, MC-202, TB-303, TR-606, TR-808, TR-909. Also featuring eurorack modular synthesis and DIy projects.
Friday, December 31, 2010
Synovatron DIY Eurorack prototyping kit - Follow Up
As promised here's the follow up video to the Synovatron DIY kit post.
I used the kit to make a simple polarizing CV mixer. To make this all you need is the Synovatron kit, seven 100k resistors, a dual opamp (tl072/tl082/lm358 etc) and an spst switch.
The inputs are unbuffered but you could simply add a couple more opamps to buffer them if you wish.
click the picture to download a PDF of the schematic.
Buy Synovatron DIY Kits on ebay
Visit the Synovatron blog
Ok so this is the last post of the year, hope you have a great 2011
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Great post and video, very informative again.ReplyDelete
I might try one of those kits next year, excellent for beginners like me i guess.
I hope you'll have a great 2011 too!
cheers Pierre, keep on modulating!ReplyDelete
I think Paul's CV mixer is an ideal first project, it's very straightforward, not much to go wrong and can be 'pimped' with extras like DC Vref on normaled inputs and +/- level output indicator LEDS with just a few extra components PLUS it's really a very effective module. Buffering the inputs will not do much except give a constant input impedance but this design only varies between 100k and 112.5k anyway so keep it this simple. Great job Paul.ReplyDelete
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