Quantity   Component name
2 × MELIFE esp32-s 30-pin dev board
2 × uxcell a12062900ux0221 DC 3V Coil 5 Pins SPST Power Relay
1 × MP1584EN buck converter
2 × NPN 2N2222A transistors
2 × 1N4007 flyback diode
2 × 3.3k resistors
1 × 220 resistors
1 × 1/4 Inch NPT 12V/24V/110V/220V Brass Electric Solenoid Valve 2W025-08
1 × 1LB Propane Gas Bottle Refill Adapter 1/4" Male NPT Thread x 1"-20 Female Throwaway Cylinder Thread Fitting
1 × 1 pound propane tank
1 × AEDIKO 5pcs High Voltage Generator DC 6-12V to 1000kV Boost Step-Up Inverter Arc Pulse Generator Power Module High Voltage Trans Or any other 12V to high voltage arc converter