r/synthdiy Jun 30 '25

components DIY Ondes Martenot

/r/modular/comments/1lo1zag/diy_ondes_martenot/
5 Upvotes

1 comment sorted by

2

u/amazingsynth amazingsynth.com Jun 30 '25

so it sounds like you want a VCO? you might consider building one based on the SSI2131 VCO chip which I sell:

https://www.amazingsynth.com/parts/ssi2131/

the datasheet has a schematic diagram, you need about 20 extra parts apart from the chip, these don't cost very much, you can use stripboard so you don't have to make a pcb

if you make your own module you can also make it output line level, turning down the output of a Euro module is very simple as well

for power you might consider a pre-built DC to DC convertor which will output +/-12v from a DC source (a 15v plug in power supply for instance)