To monitor its surroundings, Nordic Thingy:91™ has a multi-sensor chip that contains several sensors for detecting different environmental properties and a separate color and light sensor.
The multi-sensor chip contains sensors for temperature, humidity, air quality, and air pressure.
Figure 1. Environment sensor schematic
The color sensor onboard Nordic Thingy:91 senses red, green, blue, and infrared light. The sensor faces towards the blue transparent bottom case with light pipes guiding the light towards the sensor. To measure the color on a surface, the color sensor is accompanied with an RGB LED that can illuminate the surface enabling the color sensor to read the color of the reflected light. The color sensor is accessed through I2C (slave address 0x38).
Figure 2. Color sensor schematic
