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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
Nice! I think yellow looks better than red... It might be nice inverted as well so it was yellow text on a black background.
If you could wire the other side of the LED to another pin instead of ground, you could use red/green LEDs and could change the shade with PWM :)
For the masking off, what about black electrical tape? It might be easier to get nice straight lines around the edge, and a bit quicker than using paint.