Mini Motion Sensor Lamp

Here are the parts:

5mm LED * 4

DC-DC 5V output

HC-SR501 PIR MOTION DETECTOR

3.7V 14500 battery

100Ω，Ohm * 1

10KΩ，Ohm * 1

2N3904 transistor * 1

Step 1: Print the BOX

Step 2: Assemble !