Did you see the docs on the Graphics library? http://www.espruino.com/Graphics
There's some info at the bottom about getting a bitmap in a form Espruino can use - it should work on OSX, but if it doesn't let me know!
@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.
Did you see the docs on the Graphics library? http://www.espruino.com/Graphics
There's some info at the bottom about getting a bitmap in a form Espruino can use - it should work on OSX, but if it doesn't let me know!