AMS AG TCS3701 color and proximity sensor

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https://www.electronics-lab.com/ams-ag-tcs3701-color-proximity-sensor/

The TCS3701 is a very-high sensitivity light-to-digital converter The TCS3701 is a very-high sensitivity light-to-digital converter that features ambient light and color (RGB) sensing in parallel with IR proximity detection. The Ambient light and color sensing function provides five concurrent ambient light sensing channels: Red, Green, Blue, Clear, and Wideband. Features Ultra-high ALS and color […]

Voltage indicator transitions between colours

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https://www.electronics-lab.com/voltage-indicator-transitions-between-colours-2/

by Einar Abell @ edn.com: This Design Idea gives two versions of an indicator light that changes from green to red as a battery discharges. There are many circuits that do this sort of thing, but all the ones I have seen are too complex and costly for my taste. This DI shows a method […]