Quantity   Component name
1 × Raspberry Pi Pico Microcontroller board
1 × MPSA44 Discrete Semiconductors / Transistors, MOSFETs, FETs, IGBTs
1 × BC337 BJT; SMD alternative: BC817
2 × Resistor 240 Ohm Or similar, value not so critical
1 × Resistor 100 kOhm
1 × Resistor 10 kOhm
1 × UF4007 Discrete Semiconductors / Diodes and Rectifiers
1 × Capacitor 4.7 nF (2000V) Some experimentation necessary, but a wide range can basically be used
1 × Inductor 4.7 - 33 mH Some experimentation necessary, but a wide range can basically be used
1 × Connectors, wiring etc.
1 × STS-5 tube Counting tube
1 × Resistor 4.7 MOhm Tube resistor; must be at least that value
1 × LCD 16x2 Liquid Crystal Display with two lines
1 × Buzzer module Sound generator
4 × Zener diode 82V Or higher, value not so very critical
1 × IRF530 Discrete Semiconductors / Power Transistors and MOSFETs
1 × Resistor 10 MOhm Control loop resistor
1 × Resistor 2.2 MOhm Control loop resistor
1 × PCB Electronic Components / Misc. Electronic Components
1 × OLED SSD1306