Quantity   Component name
2 × TTP223 Capacitive Touch Sensor Module
1 × DELL MS-116T Wired Computer Mouse Other mouse can also be used, the wiring may be different but the concept is same.
2 × IN4148 Diodes
2 × M3-0.5 x 12mm Flanged Button Head Socket Cap Screw and Nut, 304 Stainless Steel Discrete Semiconductors / Diodes and Rectifiers
2 × 3MM LED Copper Lamp Holder (optional) Round Panel Mount Display for LED
2 × 3MM LED (optional)
2 × 1K 1/8 Resistor Current Limiting Resistor for LED