Feb 05 2018
A PhotoCell or LDR (Light Dependent Resistor), used in a circuit, allows controlling things based on light intensity. Here is a circuit showing how to wire an LDR and demonstrates how controlling things based on light intensity is possible with a little help from a microcontroller. The thing being controlled in this circuit is simply an …
Jan 25 2018
I built a circuit to allow switching 12V from a 5V Arduino. Here is the wiring diagram and a picture of the actual circuit: Get the Fritzing source HERE. The side with two connections attaches to the 12V device being switched ON/OFF. The side with three connectors, connects to the 12V …
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