CURLY-MEMORY

Open source eurorack hardware using an ESP32.

ESP32 acts like anything you want, just reprogram with new firmware.

Features

INPUTS:

• Analogue input x4
• 1/8" jack x3 (IN0, IN1, IN2)
• 2.54mm pin header x2 (IN2, IN3)

OUTPUTS:

• Analogue output x4
• 1/8" jack x3 (OUT0, OUT1, OUT2)
• 2.54mm pin header x3 (OUT2, OUT3)

CONTROLS:

• Potentiometer input x4
• Tactile switch x2

OTHER:

• Feedback resistor (digital pot connecting OUT0 to IN0)
• Digital pot output on 2.54mm pin header
• Dry/wet mixer (IN0 + OUT0 - connecting to digital pot)
• WS2812B LEDs x2

POWER:

• Eurorack standard 10 pin IDC connector
• 12V input

FIRMWARE:

• ESP-IDF or Arduino

Images

References

• https://www.electrosmash.com/pt2399-analysis
• https://intellijel.com/support/eurorack-101/
• https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/spi_master.html

Influences

• https://ornament-and-cri.me/