Update - connection to Gadgetbridge on phone is very flaky, and quite often doesn't reconnect without manual intervention (me going to settings on the watch and selecting make connectable "no", then make connectable "yes"). This is with a Sony Xperia XZ1 Compact phone.
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.
Update - connection to Gadgetbridge on phone is very flaky, and quite often doesn't reconnect without manual intervention (me going to settings on the watch and selecting make connectable "no", then make connectable "yes"). This is with a Sony Xperia XZ1 Compact phone.