I managed to get the MAX3421E chip working with the Pixl.js last year and have it talk to a device with a CP2102 chip. When I came across this thread today I was finally motivated enough to write it up and post the source code. Hope it helps!
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.
I managed to get the MAX3421E chip working with the Pixl.js last year and have it talk to a device with a CP2102 chip. When I came across this thread today I was finally motivated enough to write it up and post the source code. Hope it helps!