I am new to arduino, TTN, radios… everything.
I searched this because of a Christmas gift, I think now I am addicted. I need rehab center soon.
I am reading everything from multiple forums, I have listened at least twice to Herr Spiess’s youtube videos related to LoRa and ESP.
I ordered 3 of the Heltec boards and Wemos D1 Mini and Mini Pro and the Hallard cards and RF95 radios. all 915 US. Western Colorado.
Yesterday i dived in and started with the Heltec boards. As has been noted, not much QC. 2 Heltec boards light up and init and display. 1 has cracked OLED when opened. I used the examples listed and got 1 sketch loaded to be LoRa receiver and the board with cracked OLED talks fine. Both send and receive work correctly and can watch via serial monitor in arduino IDE. One board with working OLED says it is fine in serial monitor, but nothing ever gets to receiver node.
i changed receiver node to example from @CurlyWurly, registered it with TTN, and it says it worked. WOW. Changed the sending board to send sketch from @CurlyWurly and serial monitor says "Packet queued
122183690: EV_TXCOMPLETE (includes waiting for RX windows)
", same as other past posts. Serial monitor on single channel GW does not show anything received, nor does OLED on GW. Just says READY and GW serial monitor says connected to wifi and i can connect via browser to GW.
All that to say I’m stumped. I think I have the DEVaddr and keys correct, but do they even need to be correct to get from the send node to the GW node?
I switched this morning to learn about the wemos D1 mini and with a simple water sensor i am getting about 400meters max from my house with stable readings, after that NOTHING. So, i really want to figure out the LoRa radios. I need to transmit 3-5km in mostly open farmland region.
…my wife does not think i should buy spectrum analyzer and oscilloscope. But she says it is OK if I buy Andreas a beer IF i take her to Switzerland also.