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#CD40106

Rommudohrommudoh@social.tchncs.de
2024-02-02

Finished #soldering my #VCO #perfboard. It is calibrated to 1V/Octave and outputs sawtooth, square/pulse, and triangle waveforms.
The heart is a #CD40106, using only one of the inverted Schmitt triggers. I tried adding more, but couldn't fit them properly. Maybe if I left out the triangle wave output, which would remove the upper #TL074.
My power supply board is getting full, I should add a few more sockets.
Demo video: makertube.net/w/bxShHoDY5cCP7k
#diysynth #waveform

the finished VCO from the top, fully populated and labeled. the pin header to the left is the CV input, the pin headers to the right are the three outputs for the different waveforms. at the bottom there are three potentiometers, for coarse tuning, fine tuning, and the pulse width of the square wave.the bottom of the board.l, showing the soldering. I'm quite happy with the result, even if I had to redo a part to the right due to an error in the schematics. thankfully there was enough space to fix it.the dual rail power supply board with all modules used in the demo video plugged in. the dual supply socckets are all used, just two single supply sockets are free.

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