Cheep4

Maker	Eric Brombaugh
Type	Low cost digital oscillator on an STM32C5 with an I2S DAC
Mounting	SMD
Width	—
License	Proprietary (MIT covers the code, no hardware grant)
Difficulty	🌋 Fine-pitch SMD

Fourth in the maker's Cheep series of cheap MCU oscillators. Coarse, fine and FM pots on the 1V/oct input, a PCM5100A DAC, seven algorithms selected by button and LED, and settings saved across power cycles. Uses 0402 parts alongside 0603.

Documentation

• Bill of materials (BOM)
• Schematic

Links

• Source / files on GitHub
• Maker page

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This is a third-party open-source design, listed here as a build reference. Specs are researched from public sources; check the source repo and store for the current BOM, panel, and revision before ordering parts. Corrections welcome.

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