Quantity   Component name
1 × ESP8266
1 × STS-5 Geiger tube
1 × 4.7 mH inductor
1 × 4.7 nF 1kV capacitor
1 × KSP44 transistor
1 × 2N3904 transistor
1 × 1N4007 diode Inductors, Chokes, Coils and Magnetics / Passive Delay Lines
1 × 4.7M resistor
1 × 100k resistor
1 × 10k resistor
1 × 220 Ohm resistor
1 × optional piezo buzzer