The latest update of Altium Designer (V21) was released in the late days of December 2020. To support this new version of Altium Designer, we've updated our Library Loader utility. If you're familiar with the plug-in, feel free to go ahead and download it right away! If you're not using the Library Loader yet, here is what you need to know:. ESP32 DevKit v1: ESP32: Popular ESP32 development board: TinyPICO: ESP32: Small ESP32 board by UnexpectedMaker: ESP32-S2-DevKitM-1: ESP32-S2: Entry-level ESP32-S2 development board: ... If you want to use third-party Arduino libraries, add a libraries.txt file with the list of libraries that you use.