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Saturday, January 30, 2021

Wednesday, January 27, 2021

Varilogic 2 by Grant Richter








 PCB Layout 

this module can change the logic between two gates with voltage control ,so depending on the voltage it can be and / or / xor 




the table is borrowed from Richter's old page which can be still found at the wayback machine along with schematics and more info on this module https://web.archive.org/web/20140810101425/http://www.musicsynthesizer.com/DIY/Grant/grant_richters_synthdiy.htm

PCB Layout is still not confirmed as i don't know if i need this too right now ,i share it if anyone wants to build this .







Sunday, January 24, 2021

Soldermask Arp Quadra Phaser PCB

 from making the ARP Quadra Phaser adaptation by Jurgen Haible ,i get my pcb's done locally and this is how it's done .




Monday, January 11, 2021

VCA with CA3046

 pcb layout





 


Sunday, January 10, 2021

555 VCO

 Thomas Henry 555 VCO PCB Layout ,tested and working ,the dual transistor thing in the 8 pin Dip socket is BCM857 ,this is a slim down version with only triangle and ramp outputs





Tuesday, January 5, 2021

Freq Shifter - Part 1

 Frequency Shifter - Part 1