Quantity   Component name
1 × Torsion spring From hand trainer as donor
1 × Arduino Nano
1 × Brushless RC motor 1900KV 70A
1 × ESC 80A
1 × Pulley gt2 60 60 teeth bore 8mm
1 × Pulley gt2 16 16 teeth bore 5mm
1 × Belt gt2 6mm 200 mm
1 × EDC shockproof box 165 * 105 * 55 mm
2 × Lipo 2200Mah 11,1V 25C
1 × Waterproof switch 6A 125V
1 × Skate wheel 53mm
1 × Steel mounting plate 3mm