Arduino Hardware

This I2C true colour sensor is a true piece of jewellery. It includes a built-in white LED and a sensor with four channels on 10 bits: red, blue, green, clear.

Usage is really easy but calibration is rather complex. The parameters to tune include
  • gain or integration time or speed on photographic equivalent, for each channel
  • capacitors or sensibility on photographic equivalent, for each channel
  • offset or black trimming
  • white balance
The Arduino prototype board includes the true colour sensor, the logic level convertor, and 2 bits opto-isolator.

Because the I2C sensor is operated on 3,3V, a logic level convertor is required.

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I²C True Colour Sensor

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