Hi guys,
For rapid deployment of a LoRa based comms, look at the Gamma modules from RF solutions.
https://www.rfsolutions.co.uk/radio-mod ... 68mhz-p392
Since its the companies implementation of the SemTech LoRa chip, you dont have full access with the standard LoRa chip features but its simple to implement and too achieve low data, at long range, for minimal power. I've found nothing to beat it yet.
I've used them on a couple of projects and achieved 700m range in non line-of-sight, wooded, wet, undulating terrain. They claim many Km in true line of sight applications.... but who ever achieves that.
The standard unit at around £20+vat+shipping can be used either as paired units;
1xTransmitter to 1xReciever with simple 8 input on/off pins to 8 output on/off pins.
2x paired Transceivers giving 4 on/off input pins and 4 on/off receive pins each.
Or my personal favourite.. using the UART compatible Rx/Tx pins, Just send a short sequence of serial bytes from any module and they are received at any other module. No pairing required.
I've sent strings of 8 bytes with no problems, you just have to do a bit of your own simple message handling, to accept or ignore messages. Sounds harder than it was!
Changing the internal config is pretty straight forward, if others were interested in playing with the modules I could hack out the routines I wrote in FC to set them up.
J.