Margarita Prototype (open source hardware)

Hey y’all!

Sorry for the long gap between updates! I’ve been moving countries and had a ton of work in between (across different countries, too) which sort of slowed down this project a lot.

So, I’ve received a first batch and assembled one but ran into an issue, which I referred to here:

Basically, I’m thinking this is related to the VBus of the USB “switching”, because audio works but CV/knobs don’t get powered or CV/knobs work but audio doesn’t. I’ve been going over the circuit and schematic and I can’t see what the error could be. Confusing! Haha. I’m surely missing something.
But it looks like “CV” op-amps don’t receive 3.3V when Eurorack power is on and “audio” op-amps don’t receive VEE/VCC when USB is plugged (for uploading data).

So close to making it run properly!

Really appreciative of your interest btw <3

Happy New Year!

2 Likes