Infrared Sensing, Hardware Interrupts, and the Arduino
Infrared (IR) Controlled Lights with CircuitPython: Adafruit Circuit Playground Express
Handheld UV Meter
PiicoDev Colour Sensor VEML6040 - Raspberry Pi Guide
Color Matching with the Light Sensor and CircuitPython: Adafruit Circuit Playground Express


Easily measure light levels with a a photoresistor!








Phototransistors are semiconductors that change properties based on ambient visible light intensity. Perfect for inexpensive daylight sensors, and light-based triggers.









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