I’ve spent a couple of hours going through relevant posts on this forum and I found the bargain threads very useful:
For one of my application, I need the LoRa endnode to be as tiny as possible since we want ot put it ontoa mussel with a biology chair from some university.
So there are for sure small lora modules:
I also like this idea of using the opposite side of a hope module:
And the STM32WLE chip has been announced but only very few people got their hands on it:
So right now, the solution of taking a hoperf module and make another pcb on the opposite side with a MCU and a battery seems to be the smallest configuration.
Looking forward to your ideas!