| Line 20: | Line 20: | ||
* 2x analogue out (12 bit resolution, MCP4922) | * 2x analogue out (12 bit resolution, MCP4922) | ||
* 2x gate in | * 2x gate in | ||
* being able to also run without a real eurorack powersupply (it produces its own -5V by using an ICL7660) | |||
* <s>based on</s>inspired on https://micro-twin.com/hardware.php | * <s>based on</s>inspired on https://micro-twin.com/hardware.php | ||
Revision as of 20:41, 15 July 2022
| Eurocrack-hat | |
|---|---|
 | |
| Participants | |
| Skills | Electronics, Programming |
| Status | Active |
| Niche | Music |
| Purpose | Fun |
| Tool | No |
| Location | |
| Cost | |
| Tool category | Electronics,Eurorack |
Nurd-euro-pi.jpg {{#if:No | [[Tool Owner::{{{ProjectParticipants}}} | }} {{#if:No | [[Tool Cost::{{{Cost}}} | }}
specifications
The title says it all.
First version has:
- 2x analogue in (10 bit resolution, MCP3008)
- 2x analogue out (12 bit resolution, MCP4922)
- 2x gate in
- being able to also run without a real eurorack powersupply (it produces its own -5V by using an ICL7660)
based oninspired on https://micro-twin.com/hardware.php
schematics
- Kicad files: see github
- PDF of revision 001: File:001.pdf
0...3.3V to -5/+5V
The opamp needs +5 and -5 for power.
calculated with https://masteringelectronicsdesign.com/differential-amplifier-calculator-2/
-5/+5V to 0...3.3V
The opamp needs +3.3V and 0V for power.
software
- I've chosen a DAC and ADC with SPI to easily connect them to a raspberry pi.
- gate signals can be toggled via e.g. wiringpi