A pocket sized intruder alarm using the HC-SR501 low cost PIR sensor.
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Step 1: Items Needed
1. 01 x HC-SR501 PIR sensor
2. 01 x circuit board
3. 01 x male USB-A port
4. 01 x LED
5. 01 x buzzer
6. 01 x 2.54mm 03 pins female socket
7. Jumper wires
Step 2: Wire the Connections
Wire the connections according to their polarity; positive to positive and GND to GND.
Step 3: Solder the Connections
Solder the connections.
Step 4: Attach to Power Bank
Plug in a powerbank and it will work. The sensitivity can be adjusted by the trimpots on the sensor board.
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