Imported from GitHub: not-forest/rp2040-12V-motor-regulator · commit 01e11d1 · license MIT

Description

Small motor regulator circuit with H-Bridge driver source code for RP2040 Zero microcontroller.

README

RP2040-Zero Powered 12V Motor Controller

RP2040 microcontroller handles status LEDs, an H-Bridge driver, and a rotary encoder input. RP2040's PIO is used to read encoder signals as a state machine, completely restraining bouncing errors from the input lines. This allows to use cheap encoders and have an amazing precision.

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PCB

• Designed in KiCad.
• Screw terminals 12V power input and motor output.
• Two versions include buck converter and linear regulator.

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Software

1. Rotary Encoder:
   • PIO reads encoder signals and adjusts speed.
2. Rotary Encoder's Switch:
   • Changes motor direction via the H-Bridge.
3. PWM:
   • Controls motor speed by adjusting duty cycles.
4. Status LEDs:
   • Show real-time speed and direction updates.

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Requirements

• Rust Toolchain: For building firmware.
• elf2uf2-rs: To flash the RP2040 (cargo run automatically searches for connected rp2040 and flashes thefirmware).
• KiCad: adjust PCB design.

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Provides a reference for PIO-based rotary encoder handling in Rust.