Need to autonomously monitor for that specific color value? Want to hone in on that magenta ball? Or follow that aquamarine line? The BH1749NUC-based Qwiic RGB Sensor is here for all of your red, green, blue, and infrared color-sensing needs.

The BH1749NUC features an I²C interface and a programmable interrupt output. It senses red, green, blue, and infrared in its field-of-view, then reports each channel as a 16-bit value. Additionally, it features programmable IR and RGB gains and a variable measurement rate.

Also included on the breakout are individually-controllable white, red, green, and blue LEDs. The LEDs are managed with a PCA9536 4-channel I/O expander. The paired LEDs and I/O expander allow you to customize illumination on your objects of interest with a simple I²C interface -- no extra GPIO-control required!

Check out the documents section for a pair of Arduino libraries -- for both the BH1749NUC and PCA9536 IC's -- and a handful of examples to help get you started.

The Qwiic RGB Sensor uses our simple Qwiic interface, so it requires no voltage translation and no figuring out which pin is SDA or SCL; just plug it in and go! As with any Qwiic board, this product includes a pair of Qwiic connectors to support a chain of multiple sensors.

NOTE: The I²C address of the BH1749NUC is 0x41 / 0x39 and is jumper selectable to 0x38. A multiplexer/Mux is required to communicate to multiple BH1749NUC sensors on a single bus. If you need to use more than one BH1749NUC sensor consider using the Qwiic Mux Breakout.

We do not plan to regularly produce SparkX products so get them while they’re hot!

• Red, green, blue, and infrared (IR) color sensing
  • 16-bit digital outputs
  • Programmable RGB/IR gains, measurement rate
  • Programmable interrupt for data-ready or out-of-threshold readings
• Separately-controllable white, red, green, and blue LEDs
  • Managed via I²C I/O expander (PCA9536)
• I²C Interface
  • BH1749NUC addresses: 0x39 (default), 0x38
  • PCA9536 address: 0x41
• 2x Qwiic Connection Ports
• Operating voltage: 2.3 to 3.6V (3.3V recommended)

• Schematic
• Eagle Files
• Datasheet (BH1749NUC)
• Datasheet (PCA9536)
• Arduino Library (BH1749NUC)
• Arduino Library (PCA9536)
• Product GitHub Repo