How to power Pi when IMST iC880a backplane is being used, and gateway is in enclosure

Gateways Raspberry Pi Gateways
1

The ‘wrapping up’ section of the article https://github.com/ttn-zh/ic880a-gateway/wiki suggests to use 5V and GND pins to power the Pi when we’re using an enclosure:

“we will cut the micro USB end of the power supply, pass it through the hole, solder the wires to jumper wires, and finally connect 5v and GND to the Raspberry Pi”

However when we use the IMST iC880a backplane (https://www.tindie.com/products/gnz/imst-ic880a-lorawan-backplane-kit/), how do we power up the Pi when we’re placing the gateway inside the enclosure. It seems that the backplane has a provision to power up the Pi. How do I power up the gateway?

2

Sounds like you could do it through the backplane then.

Or solder directly to the top or bottom of the header pins.

Using a pi in a deployment is making a compromise with reliability anyway, given the reliance on an SD card.

3

For non professional/casual use it might well fit the bill. Plenty of documentation available on how to set it up and no need for specialist embedded knowledge.

Providing 5V to the backplane will power both the RPi and the concentrator board.

4

But how do we do that? That was my question precisely. (Which pins to be used, how should it be connected?)
Note: It must be very simple, but I’m not able to get there.

5

Use the power socket that is located at the edge of the pcb to inject the power. (Assuming you mounted it, if not you need to mount it first)

1 Like
6

If you need to go directly (if there’s no power input on the adapter) see the raspberry pi pinout documents. 5v and corresponding ground are at the low numbered end of the header. That’s where an adapter board would be routing power anyway.

7

Here’s how I did it: http://blog.aha.nl/2018/05/building-ttn-gateway.html
Power is applied to pins 21 and 22 of the concentrator board.