This is a LoRa and GPS Hat. The larger E22-900M30S with a range of 12km at left and the small NEO-6M at right. NEO-7M and NEO-8M should also work.

I mistook NEO-6M for having a SPI interface, but realized this was for Flash/EEPROM.

I replaced coils normally used to separate frequency interference with 3 x SPX3819. One for the MCU and one for LoRa and one for GPS with Enable pin controlled from the MCU. This way I can switch modules on/off through power. I need to double-check peak power consumption on E22-900M30S, but SPX3819 supplies 500mA so I hope this is sufficient.


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