Embedded Car (WIP)

Installation

• cargo install probe-rs, installs probe-rs to flash the firmware to the microcontroller.
• rustup target add thumbv7m-none-eabi, adds the target to the rust toolchain if you don't have it already. (Although the rust-toolchain.toml should do it already)

There is a probe-rs extension for VS Code

Circuit (Fritzing)

The circuit design is made with the open source application Fritzing and stored in the file CircuitDesign.fzz. You can download a packed executable on the website by donating $8 or build it from source with the installation instructions on the repository.

Material

Many of the documents linked here are available in the hardware-specs folder of this repository.

• Blue Pill Board (STM32F103C8T6) - STM32-BASE - Pinout Diagram

• ST-Link V2 (STM32F101C8T6) - STM32-base

• Motor Driver Module (HW-095 containing a L298N) - Components101 and AllDataSheets

• Bluetooth v4 (BLE) module (HM-10 containing a TI CC2540) - HackSpark CornellEngineering

• Ultrasonic Sensor (HC-SR04) - SparkFun

• Servo Motor (SG90) - DataSheetsPDF

• Large cell of 3600mA (LGDB-M36-1865) - SecondLifeStorage

• A battery charger module for 18650 cells - LetMeKnow

• A 18650 cell holder - LetMeKnow

• Breadboard and MM/MF jumper wires

• A large stock of resistors of every value - HackSpark

Ressources

Building a mental scheme

• Various knowledge about electricity: The Engineering Mindset - YouTube
• Wiring a motor driver module: YouTube and How To Mechatronics tutorials.
• PWM and Timers - YouTube and Nordic Semiconductor
• UART protocol - AnalogDialogue
• Bluetooth Low Energy - Official Website

Structure

Project contains multiples crates to control or program behaviour.

• car-core: contains microcontroller logic
• car-controller: provides a CLI and a user interface to interact via Bluetooth with the car
• car-transport: contains message logic between the car and the controller