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C Robot

Robot firmware for Waveshare Pico2Go (RP2350-Plus) in Embedded C; leverages RP2350 for reliable motor control plus integrated IR remote support and robust capabilities.

Required Hardware

• Waveshare Pico2Go Mobile Robot (Amazon B0FFH15ZW4)

  • Mobile robot platform based on the RP2350-Plus microcontroller, compatible with Raspberry Pi Pico series.
  • Features: Self-driving, remote control, includes RP2350-Plus control board, rich Wiki resources, and expansion options.
  • Ideal for embedded robotics, motor control, and IR remote experiments.

• PAOWANG 14500 Rechargeable Battery 3.7V 2500mAh + Charger (Amazon B0CK1PWMTT)

  • 4-pack of 14500 lithium-ion rechargeable batteries (button top) with charger.
  • 3.7V, 2500mAh high capacity, suitable for powering the Pico2Go robot and similar embedded projects.
  • Rechargeable, long life, and includes charger for convenience.

What's Included

• Motor Control: PWM-based speed control with direction pins
• NEC IR Protocol Decoder: Async IR remote receiver
• Embassy Async Runtime: Clean async/await implementation for RP2350

Hardware Pin Mapping

• PWMA: GPIO 16
• AIN2: GPIO 17
• AIN1: GPIO 18
• BIN1: GPIO 19
• BIN2: GPIO 20
• PWMB: GPIO 21
• IR Receiver: GPIO 5

Building

This project uses Pico-C-SDK from git (main branch) since RP2350 support is very recent.

mkdir build
cd build
cmake -G "Ninja" ..
ninja

Or use the VS Code Pico extension tasks: "Compile Project" to build, "Run Project" to flash.`

IR Remote Commands

• 0x18: Forward
• 0x08: Left
• 0x1C: Stop
• 0x5A: Right
• 0x52: Backward
• 0x09: Reset speed to 50%
• 0x15: Increase speed
• 0x07: Decrease speed

Auto-stop after 800ms of no IR signal.

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License

MIT