ZEN Instruments
A blog about electronic instruments from a DIY standpoint
Saturday, September 7, 2024
Koogo Analog Delay schematic (Donner Yellow Fall)
›
I've been experimenting with controlling analog effects pedals, like this chorus . I bought a cheap "Koogo Analog Delay" t...
Saturday, August 10, 2024
Adding CV to the Electro Harmonix EH400 Mini Synthesizer
›
This is a follow up to our previous look at the EH400 here . Now we're investigating methods of voltage controlling the oscillator. ...
Saturday, August 3, 2024
Atari XC12 FSK Decoder
›
I have a bit of a fascination with tape storage interfaces. They're just an interesting junction between analog and digital. How d...
Friday, August 2, 2024
PWM Chorus Control
›
I'm a fan of synths that have analog choruses built in. The Juno 106 and Poly 800 are two popular examples. Strangely, neither give...
Saturday, July 13, 2024
Boss DR-220 Gate Array (MB670120) Interface
›
I've wondered for a while how exactly the CPU of the DR-220 controls its gate array. The CPU handles the screen, buttons, and trigg...
‹
›
Home
View web version
