Yes, absolutely - it'll even handle more than one at once: https://www.espruino.com/Waveform
@Gordon started
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.
Yes, absolutely - it'll even handle more than one at once: https://www.espruino.com/Waveform