Colour Sensor Module with 4-bit Analog Output

The Colour Sensor Module with 4-bit Analog Output is a 6-pin colour detection breakout that communicates with a microcontroller, operating from 3V to 5V DC at under 20mA current draw with an optimal detection range of 10mm from the target surface. The color sensor module uses a photodiode array behind colour filters — typically red, green, blue, and clear (unfiltered) — and output refers to the four distinct colour-filtered channels, each providing an analog signal proportional to the light intensity passing through that specific colour filter.

The colour detection sensor works by illuminating the target surface (often with an onboard white or RGB LED) and measuring how much light of each filtered colour reflects back — a red object reflects more light through the red filter channel and less through blue and green, giving a distinctive 4-channel signature that the analog colour sensor outputs as four separate voltage levels. The colour sensor arduino connection reads each of these four analog channels sequentially or in parallel depending on the specific 6-pin layout, and a calibration routine comparing the four channel readings against known reference colours (white, black, red, green, blue) allows the microcontroller to classify the detected colour.

the 10mm optimal detection range means consistent ambient lighting and constant sensor-to-surface distance are critical for reliable colour classification — variations in ambient light or distance shift all four channel readings together, requiring recalibration if the sensing environment changes. Available at StemVolt, this colour sensor module with 4-bit analog output, is best for stduents and makers developing colour detection, sorting, and automation projects with reliable colour recognition capabilities.

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Features:

• Operates at 3V to 5V DC supply allowing direct use with 3.3V and 5V boards
• Provides 4-bit analog output giving up to 16 signal combinations for colour identification
• Six-pin interface covers power, ground, and four output lines in a single connector
• Analog output type allows reading without special libraries on Arduino or ESP platforms

Technical Specifications:

 Applications:

• A colour sorting project uses this to separate red green and blue objects on a belt
• STEM classroom project reads surface colour and lights a matching LED in response
• Colour sensor module identifies coloured cards in a simple robotic card sorting game
• An analog colour sensor reads object colour on a conveyor and triggers a relay output

Package Includes:

• 1 x Colour Sensor Module