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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.
@Joakim
Microchip is coming out with a new LoRa module in May that will sell for $10.90 in 1,000+ unit quantities. Maybe not so maker friendly, and it will definitely be more expensive for us mere mortals…
DASH7 is another interesting alternative. It's a particularly good fit for telemetry with its event based BLAST (Bursty, Light, Async, Stealth, Transitional) design, low power use and good range outdoors and indoors. It's a pretty nifty protocol! I especially like the query functionality.
It's also got an open source implementation, OSS-7, which as it happens has already been implemented for STM32L. Which means it's not too hard to port it to Espruino, right? I don't know the compiled size of OSS-7, but the protocol stack of DASH7 is said to be small.
There's also OpenTag, but it looks stale and is not supported by DASH7 Alliance (OSS-7 is).