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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.
@tom.gidden
@Alex: yeah, slight digression, but I've considered putting an NRF51822 on an Espruino too.
Thing is, the HM-10 Bluetooth Low Energy thing is a pig to deal with: it's all through undocumented (or rapidly shifting documents, at best) AT commands and can't do custom characteristics worth a damn. So, basically it's an iBeacon, and that's about it.
On the other hand, the NRF51822 is a lovely little chip, but needs to be programmed in C. Even a fairly simple thing is a chore to do. It also has I/O limitations that aren't surprising considering the size/cost.
So, I was thinking of using the Espruino as the master, and an NRF51822 flashed with a fairly simple program so it can act as a more-capable BLE dongle.
The project I'm toying with right now requires a board with a much smaller footprint than the Espruino, but I'd far prefer to be uploading .js files rather than .hex.