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imu-rc

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@dimitrionlsd

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KiCad projectAll 61 files, ready to open in KiCad1.8 MB
For fabricationGerbers, drill, pick-and-place and BOMGerbers and drill zip198 KBGerbers and drill zip: imu_rc_car201 KBGerbers and drill zip: imu_rc_car_encoders91 KBGerbers and drill zip: imu_rc_car_prox_sensors58 KBGerbers and drill zip: imu_rc_hand_unit173 KBPick and place (CSV)5.5 KBPick and place (CSV): imu_rc_car3.0 KBPick and place (CSV): imu_rc_car_encoders1.6 KBPick and place (CSV): imu_rc_car_prox_sensors975 BPick and place (CSV): imu_rc_hand_unit5.3 KBBOM CSV23 KB
Schematic PDFEvery sheet, to read or print249 KB
3D modelThe board with its parts, for an enclosure (GLB)3D model (GLB)9.7 MB3D model (GLB): imu_rc_car5.0 MB3D model (GLB): imu_rc_car_encoders4.3 MB3D model (GLB): imu_rc_car_prox_sensors683 KB3D model (GLB): imu_rc_hand_unit5.1 MB
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README

IMU-RC

This repository contains the final project for an Electronics and Computer Engineering degree: IMU-RC, an innovative hand-held controller for RC cars.

Features

Hand Unit

The hand unit is a battery-powered controller featuring:

  • ESP32-S3 WROOM module on a custom PCB designed in KiCad.
  • LSM6DSO IMU sensor for motion detection.
  • BLE communication using a client/server protocol with the RC car.
  • OLED screen (128x32) for menu options, diagnostics, and sensitivity adjustments.
  • Four buttons for navigation: Back, Up, Select, Down.
  • RGB LED to display battery or communication status.
  • Battery Management System (BMS) with BQ297 and MCP73831 to charge a 3.7V 250mAh LiPo battery via USB-C.
  • BOOT and RESET buttons for easy firmware handling.

Gesture-Based Control

Control the RC car with intuitive hand gestures:

  • Lean forward: Car moves forward.
  • Lean backward: Car reverses.
  • Lean left or right: Car rotates left or right.
  • Control mode toggle: For 4-motor vehicles with omni-directional wheels, enable sideways movement for strafing.

Additional Features

  • Car stats menu: Check car battery levels.
  • Safety mechanism: Infrared proximity sensors prevent collision with walls/objects:
    • 2-motor cars: Front and back sensors.
    • 4-motor cars: Side sensors added for additional safety during strafing.

Technical Highlights

  • Custom PCB: Designed in KiCad for compact, efficient performance.
  • Battery Management: MCP73831 handles charging, and BQ297 ensures protection against overcharging/discharging.
  • Versatile Control: Adaptable to different RC car configurations (2-motor or 4-motor).
  • OLED Menu System: Offers detailed settings, diagnostics, and real-time feedback.

Usage

IMU-RC is designed to bring modern, intuitive control to RC vehicles, making it a perfect blend of technology and engineering creativity.

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