I got this new Uno board from WeMos with the ESP-32 chip. [image] I can’t find anything online. Can PIO add it to the boards?

The board is not explicitly supported. But as you have already figured out, using ESP 32 Dev Module will work fine. The constant LED_BUILTIN might not be defined though. If I’m not mistaken, the LED pin 2. So: static const uint8_t LED_BUILTIN = 2; #define BUILTIN_LED LED_BUILTIN // backward compa…