Hmm - have you tried sending the same data (just a packet saying 'Hello World' while also reading from the TSL2561? it might help to narrow it down).
@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.
Hmm - have you tried sending the same data (just a packet saying 'Hello World' while also reading from the TSL2561? it might help to narrow it down).