Any success story on LoRa(RFM95) module and MySensors?
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@ricorico94
I have no big xp with lora mode, but I think you can get decent comm even at -100-120dBafaik rfm95 is not for 169mhz. The rf ic on rfm95, which is sx1278 can handle 169mhz, but the radio module is already tuned for specific freq (not for 169mhz).
Perhaps by using a rfm95 433mhz and hacking sw to 169mhz but then, rf would not be optimal (electronics not matched for this freq). So in that case 433mhz may work better than the hack.
Hoperf have a 169mhz module, RFM98PW169
https://www.tme.eu/fr/details/rfm98pw-169s2/modules-rf/hope-microelectronics/
Just remember what I said in my previous post too, regarding power supply type, and your build assembly (gnd size), and antenna used.
For example, for a batt powered device, the smaller the freq and pcb gnd size = lower gain antenna + degraded bandwidth. So you could think it like this:
if you have a small board (and for 868mhz and 40x40mm gnd, you already loose gain, effciency), is it worth to use smaller freq??- I think if you want to get best range, for whatever freq, you need to consider this. you can even try by using bigger pcb ans see how it improves
- and your antenna. Two options here: 1) you get a trusted brand antenna 2) you get a cheap antenna and you don't know if it's well tuned, and lot of cheap antennas are not well tuned (tunable using a swr meter)
Below a good example of what I'm trying to explain, from silabs datasheet, notice the TX power and bitrate used for these results.. :
Conclusion: when you use a small board/gnd and assembly, you will get less range. Period :)
People would say, oki then I'm going to use 2.4ghz, as it can better fit small assembly. Yep, as you know 2.4ghz penetration is not great (can be half range after one concrete wall..there are excel sheets for calculating this).
This can be a start for explaining why people can sometimes complain about zwave, zigbee range (with HA people are looking after smaller and smaller device..)
