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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
Having a potentiometer rather than proper temperature control makes it a no-go for me. While it might be ok for some things, other stuff like the WS2812B lights are amazingly temperature sensitive, and will just die if you try and solder them with something that's too hot.
You can get hot air rework stations for less than £60 (with postage) in the UK. I bought one for the hot air but it does have a proper temperature controlled soldering iron. Having said that I still use my old magnetic tip Weller, as the cheap one seems to have very little thermal mass (it feels like it cools down too quickly).
I did get given one of these, and I could highly recommend them. As well as being amazingly cool, it seems to work well, and you can even run it off 12v if you're away from a socket. If anything it's just a bit too small to hold easily.