Easiest/cheapest way to get multiple (9-12) analog cv outputs (0-5V volt) from a single microcontroller/arduino

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Hardware eurorack Modular synthesiser raspberry-pi-pico

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  • EuroPi

    EuroPi: A reprogrammable Eurorack module based on the Raspberry Pi Pico

    • There is no super cheap way to get a lot of analog outputs from an MCU. Filtered PWM is your best bet for cost effectiveness (I recommend looking at the EuroPi from allen synthesis : https://github.com/Allen-Synthesis/EuroPi). Otherwise if PWM doesn't work for you, you'll need to look into DAC chips. The MCP4728 is a good spot to start, it's 12-bit and has 4 channels: https://www.adafruit.com/product/4470. Since it's I2C controlled you can have multiple of them on one bus. Maybe looking into a 16 channel PWM driver for a lot of outputs: https://www.adafruit.com/product/815. Hope this helps!

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