I have purchased a pair of Heltec LoRa WiFi 32 v2 modules to test over 1200 meters and they work almost flawlessly but I have a problem configuring them. When I first came across LoRa it was in the form of the Reyax module that is connected via serial, I didn't buy them becasue they are hard to source in the UK.
With the Reyax module (which uses the same Semtech SX127x chip as the Heltec) you can set the node address and therefore have more than just simple peer to peer connections.
Does anyone know if this is possible on the Heltec and if so a pointer would be much appreciated? If not do I need a LoRa gateway even though we have no requirement to be online?
Apart from the syncword, which can be used to identify different networks of devices, native LoRa devices such as SX127x have no concept of node address.
For a SX127x device to have a 'node address' the software library you are using with that LoRa device has to support that feature.
The Things Network (TTN) is an example of a network of LoRa devices that uses a software library to implement node and application IDs.
That is a shame that the Heltec board doesn't support nodes because it is a great little all in one solution. I have ordered some Serial Reyax boards and we will try them...
Little_Old_Me:
That is a shame that the Heltec board doesn't support nodes because it is a great little all in one solution. I have ordered some Serial Reyax boards and we will try them...
I think you missunderstand.
The Heltec board, having a native LoRa device on board, supports loads of stuff, just use an appropriatate library.
Its those so called LoRa boards that have a UART\Serial front end that are the problem, they support very little apart from their own very specific, dedicated and non-standard interface.