In Part 2 of this article, we will look at more sensors and output mechanisms. We will cover the Light-Emitting Diodes (LED) on the PocketBeagle 2 device and the Seven-Segment display. Light-Emitting Diode (LED) This is not a part of the TechLab device, but on the PocketBeagle 2 itself. There are four user LED lights next to the USB-C OTG port. We can programmatically turn these lights on or off. You can use these for sending error codes to the device since the device is headless... https://www.linux.org/threads/pocketbeagle-2-techlab-part-2.65404/