Not a fan of the arduino footprint. It's a trade-off between being compatible with loads of shields and otherwise being quite useless with the irregular spacing and not breadboardable. My current favorite form-factor is the adafruit feather, but I think they've already got an nrf52 board...
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Not a fan of the arduino footprint. It's a trade-off between being compatible with loads of shields and otherwise being quite useless with the irregular spacing and not breadboardable. My current favorite form-factor is the adafruit feather, but I think they've already got an nrf52 board...