I’ve been planning a project which requires longer distance sensors. The Adafruit VL53L1X seems like it will do the job nicely. However, I was puzzled at what the two inbuilt connectors are on the board given there are also pin options?
Turns out these are Sparkfun qwiic or STEMMA QT connectors.
One STEMMA QT connector typically provides I2C communication (SCL, SDA) and power (VCC and GND), allowing the sensor to communicate with your microcontroller.
For the STEMMA QT cables, typically follow the Qwiic convention:
- Black for GND
- Red for V+
- Blue for SDA
- Yellow for SCL
Note the colors are slightly different for SDA/SCL but the pin order is the same
The second STEMMA QT connector is a duplicate of the first, giving you flexibility for different wiring setups or for easier daisy-chaining if you’re connecting multiple devices.
All of this means that I should be able to reduce the amount of soldering I need to do to get the next project operational.
CIAOPS Labs 