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Minesweeper Competition Robot — PCB Design 🤖💣
Custom KiCad-designed PCBs for a minesweeper competition robot, consisting of a Control PCB housing the main microcontroller and sensing/driving circuitry, and a Power PCB acting as a smart relay system for safely switching robot subsystems on and off.
📋 About
Both PCBs were fully designed from schematic to layout in KiCad and manufactured as real printed circuit boards. The two boards work together: the Control PCB handles all logic, motor driving, sensing, and protection, while the Power PCB receives switching commands from the Control PCB and safely controls power delivery to the robot's subsystems.
🛠️ Tools Used
- KiCad — Schematic capture and PCB layout
- Arduino IDE — Firmware for the Arduino Mega
🟦 Control PCB
The brain of the robot. Hosts the microcontroller and all peripheral circuitry needed to drive motors, read sensors, and manage safe shutdown.
Key Components
- Arduino Mega — Main microcontroller
- Two HW-315 Motor Driver Modules — Drive the main locomotion motors
- H-Bridge — Additional motor driving stage
- Two MPU-6050 IMUs — Inertial measurement units for orientation sensing
- Auto Safe-Shutdown Circuit — Capacitor-backed circuit using ICs, capacitors, and resistors that detects power loss and safely closes the system before supply rails collapse
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