This a modified TTSH SYNC PCB, to sync your 3 VCOs
my PCB version is improved and gives you Mounting holes, more space for MTA100 headers.
Buildguide:
https://diysynth.wiki.dsl-man.de/wiki/spaces/TTSH/pages/1310751/TTSH+Mod+VCO+Sync+Option
for all VERSION 2 owners: the resistor part numbers do not match with the schematic, use for the assembly the product picture or check the picture from my website.
