CompletedHardware2025
Bluetooth-Controlled Arduino Car
A phone-controlled car. My circuit, my C++ firmware.
- Arduino
- C++
- HC-05 Bluetooth
Built
- Circuit around an Arduino and an HC-05 module
- C++ firmware that turns phone commands into movement
- Driven from a smartphone app over Bluetooth
Architecture
- Smartphone appsends commands
- HC-05Bluetooth link
- ArduinoC++ firmware
- Carmoves
Insight
Change one thing at a time. It finds a hardware fault faster than swapping parts.
Challenge
ProblemControl kept dropping from hardware and connection faults.
FixTested component by component until control was reliable.