“AutoSteri is a small and compact automatic UV sterilization system that uses a PIR to detect a human and cleans when they leave.
The system uses a PIR sensor to detect the presence of a person and then after it detects the person leaving turns on a UVc LED for 15 minutes to disinfect the area where the person was.
Sterilize package deliveries
The Electronics Build (without PCB):
Take your Arduino and place it on the centerline of your breadboard.
Connect your power source connector, e.g. 5.5mm jack, to the VIN and GND pins of the Arduino.
Then connect the PIR sensor with the 5V pin to the 5V pin on the Arduino and the GND to GND and the data line to a digital pin, e.g. pin 2.
After that take your transistor or motor driver or relay and connect the triggering pin to a digital pin, e.g. pin 3. If you use a relay remember to place a resistor in series with the triggering line before going to ground. If you use a Motor driver hook up the driver according to the manufactures instructions and connect the triggering pin to the digital pin.
If using the transistor or relay connect one side to VIN and the other to the positive side of your LED. Then connect the other side of the LED to GND.Don’t forget a resistor if your led requires on at the supplied voltage (probably 12v).
If using a Motor driver connect the led to the motor pins with the correct polarity. Don’t forget a resistor if your led requires on at the supplied voltage (probably 12v).”