Quantity   Component name
4 × BPW34 Opto and Fiber Optic Semiconductors and ICs / Photodiodes
2 × Resistor 10M
2 × Resistor 23K
1 × Resistor 22R
1 × Transistor NPN
1 × Transistor PNP
2 × Capacitor 100uF
1 × Capacitor 100nF
1 × Attiny85 Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
1 × 433Mhz transmitter module