Light Sensor

This circuit is based on the ARDX 09 circuit from Oomlout.  It shows how the Arduino can monitor light values using a Photo Resistor and adjust a LED in response. Start by gathering your parts together:

Step 1:  Create the circuit

 

Step 2 – Write the code

Temperature Sensor

You can also use this same circuit to measure temperature with some subtle changes.  I used the Adafruit guide to help me and also remembered to look at the data sheet for my thermistor.

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