Quantity   Component name
1 × ATtiny85 Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
2 × 2N7002K MOSFET Discrete Semiconductors / Transistors, MOSFETs, FETs, IGBTs
2 × small motors from andromedabots
1 × some red LEDs
1 × some ASDL-6620 phototransistors
1 × various smd resistors and capacitors see the schematics
1 × LIR2032 3.6V rechargeable battery