Light Sensor Brick
The word “photo” means light. Resistors slow the flow of electricity. So a “photoresistor” uses light to slow the flow of electricity. Make sure you’re in a well-lit room for this brick. Cover the photoresistor with your finger and watch what happens. Make sure to sand the binder clips to make sure you have a great connection.
- a photoresistor (These can be easily found in a dollar store nightlight. Make surge it is the type that turns on/off automatically based on if it it night or daytime. You can also get another LED from these, too!)
- 2 small binder clips
- Disassemble the LED night light and remove photoresistor. You will be able to see it from the front of the nightlight. It will be behind clear plastic.
- Stretch apart the legs of the photoresistor.
- Important: Sand each binder clip where it touches the photoresistor.
- Clip the binder clips around the photoresistor.
- Remove the bottom clips.