Nanosumo

• MCU
• Sensors
  • End of Ring
  • Enemy
• H bridge (DRV8836)
• motors 2x GM15 25:1 6mm (https://content.solarbotics.com/products/datasheets/gm15_metric.pdf)
• battery CR2030 or LIR2450
• ir receiver
• led for info

Body and gears design: