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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.
@allObjects
10K is fine... Power seems not to be an issue, since you run anyway much more demanding things than just this transistor circuitry... R3 Suggests 33k, but 10k - if this your highest value - does work too. With this low power, DC signal, switching applications, it is not that critical.