Box designed by Adam Cigler - www.vjemy.cz
Hardware integration logic designed by Bob Heida
This is a design for a Lora gateway. The housing can stand on a table ar hang on magnetic surfaces (such as a fridge or a car). The housing is designed to integrate a Rasberry PI-3 and the European IMST iC880A LoRaWAN Concentrator board (868MHz) as electronics.
Pins of both boards are kept as near as possible to eliminate the need of long cables and hence reduces signal losses and interference.
Mounting hardware
The Raspberry can be fixed in the "electronics-integration-module" with M2 nuts and bolts(24mm length).
Magnets
Mounting the box and lid is done with 6 neodymium magents (4mm cubes).
The electronics are magneto-mounted into the box using a 12mm flat neodymium in the box and a 11mm washer ring.
On the botom of the box, 6 4mm neodymium cubes are mountable to be able to snap the gateway on a magnetic surface.
(or snap it on the inside of a window using other magnets on the outside..)
Glue
Magnets and the washer should be glued-in with epoxy.
Tests
We have tested this gateway for a month or two with The Things Network and found no influence of the magnets on the electronics.
The short wiring helps providing a stable gateway without shielding the case.
Outdoor off-the-shelf boxes
To accomodate outdoor installations in off-the-shelf waterproof DIN cases, the DIN interface file can be 3d-printed. This enables re-usage of the neat electronics-integration-module in such housing.
https://github.com/ttn-zh/ic880a-gateway
It's a one hour exercise..