LORA / SX1272

Spaeth · Joined: 05 Jun 2020 Posts: 27

Hello,

Does anybody have experiences using LORA / SX1272 in LORA mode?
I would like to replace an RFM69 module by a LORA / SX1272 module.
The communication between PIC16F1827 via SPI is running properly, but I do not get the transmission of data running.

Best regards
Thomas

Ttelmah · Joined: 11 Mar 2010 Posts: 19546

OK. So you have two modules presumably?.
Running everything at 3.3v?.
You need to set the bandwidth, mode and address in both modules.
You would then send from one module to the address of the second
module.
Beware that you should never power the modules without an antenna.
This can kill the modules.
Beware also, that movements can really 'kill' range. I was experimenting
across water, and waves or boats could really destroy the range.

temtronic · Posted: Sun Oct 11, 2020 1:35 pm

Along with the words of wisdom from Mr. T., be sure the power supply is at least 5-10X stronger (current) than the LORA spec says ! An under-current PSU will probably trip the PIC into doing 'weird, random' things.... BTDT, sigh.

Jay

hmmpic · Joined: 09 Mar 2010 Posts: 314 Location: Denmark

If you need a simple and working module. We have used a lot of E22-900T22S from Ebyte for module to module talk, no problem at all. Urban distance about 500-800 meter and lot more with external antenna. Connected to a PIC16LFxxx.

Ttelmah · Joined: 11 Mar 2010 Posts: 19546

and a much higher data rate than LoRa manages....

Spaeth · Joined: 05 Jun 2020 Posts: 27

Hello,

I got the modules running.

I choosed the LORA transceiver modules of RF-Solution because of the range up to 16km, I do not need a high transmission rate.

Ttelmah · Joined: 11 Mar 2010 Posts: 19546

Good.
Beware though that 'real' range will often be a lot worse than the claims...