Quantity   Component name
1 × Phoenix Contact MCV 4-pin connector Commonly known as "Green Connector" for 3D printers
7 × 100nF ceramic capacitor Code: 104, any voltage rating above 10V
9 × 1Kohm 1/4W resistor Common resistor, brown-black-red-gold
1 × 22Kohm 1/4W resistor Common resistor, red-red-orange-gold
2 × 220Kohm 1/4W resistor Common resistor, red-red-yellow-gold
1 × 47Kohm 1/4W resistor Common resistor, yellow-violet-orange-gold
1 × 270 ohm 1/4W resistor Common resistor, red-violet-brown-gold
1 × 33Kohm 1/4W resistor Common resistor, orange-orange-orange-gold
2 × 0.47Ohm 2W (or 1x 0.24Ohm) power resistor Discharge resistor, >=2W
1 × 10Kohm potentiometer Bourns 3386P type or compatible
1 × 25Kohm potentiometer Bourns 3386P type or compatible
1 × 47Kohm potentiometer Bourns 3386P type or compatible
1 × 10nF ceramic capacitor Code: 103, any voltage rating above 10V
3 × 6mm tactile switch Common tactile button switch, 4 pin, SPST, NO
1 × ATMEGA8A-PU Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
1 × ISP Programmer Any will do as long as it can be used to program AVR processors
1 × LM7805 Linear Voltage Regulator, 5V output, 8~18V input
1 × CA56-12CGKWA or compatible Common Anode 4-digit 7-segment display (12-pin)
1 × MC33171 or TL081 or compatible OP-AMP IC
1 × 32768Hz crystal oscillator You can get one from a cheap wall clock that goes tick-tock
2 × Hands Less than 2 is acceptable as long as it's possible to handle the tools
1 × Common sense Required for safety
1 × Plastic project case 10x10x3cm or larger
2 × 1uF ceramic capacitor Code: 105, any voltage rating above 10V
1 × Aluminum or copper heatsink Actively or passively cooled, rated for at least 50W
1 × Cooling fan Required for SMD version, 5V (connect to 5V+ pad) / 12V (connect to VIN pad)
1 × 22uF electrolytic capacitor Any voltage rating above at least 20V
1 × 470uF electrolytic capacitor Any voltage rating above at least 20V
2 × 1N4148 Rectifier diode
1 × ~3.15A automotive fuse For input protection
1 × 5mm LED (2.5~3V) Any color will do, for indicating discharge status
1 × IRLB8743 or compatible MOSFET with 5V switching voltage and 30A+ current rating