At one end is an LED and at the other the LDR, ... and with a simple divider circuit a voltage can be read by an Arduino. ... but using another LED as the light sensor. Closeup of the sensor: ...

When you need to quantify the color of an object, you’ve got quite a few options. You can throw a Raspberry Pi camera and OpenCV at the problem and approach it through software, or you can bu… ...

The Pressure Sensor Module incorporates a material called Velostat with the Arduino. This material adds more resistance when more pressure is applied to the material. This module also uses the RGB LED ...