Quantity   Component name
1 × Wemos D1 R32 (ESP32) Microcontroller for motor control
1 × L298P H-Bridge Motor Driver Shield Mounts directly on the D1 R32
2 × N20 motors Fits standard SMARS chassis
1 × SMARS chassis 3D printed
1 × Android smartphone Mounted on robot, runs broadcast page
1 × 9v Battery Powers entire system (does not work well when motors are running on high RPM)
1 × HiveMQ Cloud MQTT broker (free tier)
1 × Metered.ca TURN server for cross-network WebRTC (free tier, 10GB/month)
1 × ngrok HTTPS tunnel for local web server (free tier)