Answer:
- Touch sensor
- Light- emitting diode ( LED)
- A microprocessor ( raspberry pi, AT8086, etc)
- cables
- printed circuit board
- power (battery)
- Pb solder and soldering iron
Step-by-step explanation:
The sensor is configured on the processor as indicated in itself documentation, using the cables for necessary connections on the circuit board and it is powered by the battery.
The microprocessor is programmed to receive analog signals from the sensor and sends a digital signal ( bit 1) to the port connected to the LED, cause a delay and sends a zero bit to turn off the LED.