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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.
@Gordon
At the moment it's a firmware issue that'll be solved in a later update - just one of the hardware PWMs is exposed at the moment.
You can easily work around it using software PWM with
analogWrite(LED1, 0.2, {soft:true});though, then you can run pretty much as many as you want (albeit at lower speeds).