This heart will light up whenever it senses motion through the Passive Infrared (PIR) sensor. We will be using the PIR sensor as an input and the LEDs as outputs.
Step 1: Materials
•PIR motion sensor (1)
•Arduino micro (1)
•Red LEDs (16)
•5mm LED holders(16)
•40 pin IC socket(1)
• Servo cable
• 3 break away pins
Step 2: Tools
• Soldering iron
• Hot glue
• Wire strippers and cutters
• Drill bit as big as PIR sensor
• Drill bit as big as LED
• Arduino micro USB cable
• Paper glue
• Arduino software
Step 3: The Circuit For The LEDs
For the LEDs : Connect all negatives with negatives and all positives with positives, then connect the positive side to Arduino pin 12, connect the positive side to Arduino ground. When you have finished, snap in the LEDs into their holders, and hot glue them so that they stay in place.
Step 4: The Circuit For The PIR Sensor
For the PIR sensor: Connect GND to Arduino ground. Connect VCC to Arduino 5 volts. Connect OUT to Arduino pin 3. When you have finished, hot glue the PIR sensor into the hole.
Step 5: Completed Circuit
Solder the 40 pin IC socket to the PC board and make the connections
Step 6: Cutting Out The Shape
To cut out the shape of the heart you will first have to trace a heart and then cut it out on cardboard. After that, cut out the same shape but just on red paper. After you have finished that, glue them together
Step 7: PIR Drilling
First drill out the big hole for the PIR sensor in the middle of the heart.
Step 8: LED Holder Drilling
Now with the small drill bit, drill out 16 small holes around the heart, so that the LED holders fit snug. So that you only have to snap the LEDs in the heart, instead of gluing them.
Step 9: Wire Bending
With the coat hanger, cut out a strip of metal wire, and bend it so that it fits around the heart. Then hot glue it.