Colorimeter

Affordable Handheld / Pocket Colorimeter or just good enough “Spectrophotometer” for non-scientific use by persons with visual impairments.

Based on the TCS 3200 sensor and Arduino https://create.arduino.cc/projecthub/mjrobot/arduino-color-detection-57e4ce

Place the 3D printed device on an object, pull the trigger to hear the name of the colour detected by the device