I finished gateway for my attic - What did you build today (Pictures) ?:
As this will be under roof but without any isolation I try to put small silica gel bag (I collect them from other electronics packaging) inside and will see. I think it should be suitable. I am thinking of adding temperature and humidity sensor... that could also help me show how much humidity is around the year actually.
I might use the resin / epoxy stuff for some watering projects
Unless you make progress on this yourself you need to do the following to get more help.
Post links to the items you are trying to use.
Post links to the libraries you are using to achieve this.
Post your code.
Without the above it's all a shot in the dark.
There is already a LoRa library available for both Arduino Board and STM32 Bluepill Board. Using the simple library, the LoRa Module SX1278 is easily transmitting and receiving data packets.
You can check one of the best example here: (https://how2electronics.com/interfacing-lora-sx1278-stm32-sender-receiver/)
@BearWithBeard had the same issues when I tried to recompile existing sketch and dug out the above libraries. My problem is that I then get a compile error "'atsha204Class' does not name a type; did you mean 'atsha204_read'?" at this line "atsha204Class sha204(sha204Pin);" Was just going to update working sketch to new mysensors library - but I guess not.