Computing stuff tied to the physical world

RFM12B up close

In Hardware on Jan 24, 2009 at 16:28

Here are some pictures of the RFM12B radio module (there are versions for 433, 868, and 915 MHz).

With wires to adjust between the module’s 2 mm spacing and the breadboard’s 2.54 mm (0.1″) spacing:


This is how I’ve been mounting a couple of these modules lately, the white wire is an 85 mm wire antenna which appears to work well:


And this shows how I’d like to mount these modules onto a PCB – with proper 2 mm spacing of course, this was just soldered on to give you an idea:


IOW, in this last case the radio module would be flat on top of another board, with just the solder masks as isolation between them.