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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.
@Vasily
I still have Puck with original 1.92 and was not able to make an upgrade .... On my Android phone the nRF Connect and nRF Toolbox did connect to Puck only for 10 secs and disconnect homehow. No firmware upgrade possible so far :-(
1) If firmware can bring better results I will give one more "harder" try :-)
2) In case I have to use transistor (1 input leg only), should I use 2 transistors ? each one for Cathode and Anode pins?