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Measuring distance with Arduino and the GP2Y0E03 sensor

Measure RGB values with Arduino and TCS34725 color sensor

Measure lux levels with Arduino and the BH1750 luxometer

Measuring color with Arduino and the TCS3200 colorimeter

Flame Detector with Arduino and Infrared Sensor

Line Detector with Arduino and TCRT5000L sensor

Making an optical encoder with an optointerrupter and Arduino

Obstacle Detector with Infrared Sensor and Arduino

Measure light level with Arduino and LDR photoresistor (GL55)