Hello everyone,
I want to connect the RAK2245 Stamp Edition to a Raspberry PI 3B+.
I found some documentation on this question, but i’m now sure if it is working on the Stamp Edtion too.
Setup:
On the third page of the pdf is a connection table for the RAK2245 Pi HAT looking like this:
Hello @marcio ,
thanks for your reply!
At this moment the RAK2245 Pi Hat is sold out for my frequency (EU868)
I wasn’t finding any available hardware, except the RAK2245 Stamp Edition.
If there’s another available hardware I can use for building my own LoRa Gateway, I would be glad to know this
If you haven’t made a purchase yet, you might look at the RAK2287 which is newer technology that’s lower in power with very slightly better radio performance, and put it in the prewired pi hat as a holder. You’d need to then use a version of the packet forwarder software which expects the newer SX1302 chip rather than the older SX1301 chip.
If you want to use the stamp, then a quick look at the data sheet suggests it has its own power conversion to run from the pi’s 5v supply, though you might want to power the pi from the GPIO header where you tie in the stamp’s power and ground, so that you’re not running the stamp’s substantial power draw through the pi’s PCB.
To run the concentrator itself you then need the SPI pins (including the chip select) and the concentrator reset pin connected to a suitable GPIO. It looks like for the stamp you also need to provide the IOREF voltage for signalling - an unconfirmed guess would be that you’d connect that to the pi’s 3v3 GPIO pin since the pi uses 3v3 GPIO levels.
You only need to worry about the GPS / UART signals if you have actual use for GPS timestamps, most LoRaWAN applications really don’t, though if you have the hardware you can experiment with hooking that up and configuring it in the software, too.