The LED Stick comes with a default I2C address of 0x23, but it can be adjusted with a straightforward command. This feature allows you to control up to 100 LEDs (10 Qwiic LED Sticks) on a single bus! The address can also be switched to 0x22 by closing the solder jumper on the back of the board.
The SparkFun Qwiic LED Stick is part of the Qwiic compatible boards collection, which are designed for easy use. Just plug and go. There's no need for soldering, no need to figure out which is SDA or SCL, and no voltage regulation or translation required!
Be cautious when using a large number of LEDs as they can draw significant current. Ensure to consider the power limits of your setup. If your LED chain is expected to draw more than 600mA of current, connect your external supply directly to VLED. Closing the jumper from VLED to VCC will add a 4.7uF decoupling capacitor.
The SparkFun Qwiic Connect System is an ecosystem of I2C sensors, actuators, shields, and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This design reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.
The SparkFun Qwiic LED Stick comes with various features including: 10x APA102C addressable LEDs driven by an ATTiny85, a default I2C Address of 0x23 (which can be adjusted to 0x22 via Jumper), and 2x Qwiic Connectors.
|More info||Qwiic LED Stick - APA102C Hookup Guide - SparkFun Learn|