Micro IoT gateway RFM12B shield update

I have created a new version of the micro Internet of Things gateway RFM12b shield since the first revision had some drawbacks. The new version has a port that allows an OLED display to be plugged on top, this creating a combined gateway+status display solution. I don’t have a spare OLED display to use, I have one on the way and will make another blog post once it is here. [EDIT: the port is mirrored by error on this pcb batch, I won’t be able to directly plug the OLED] In addition, I added a solder jumper for the FTDI supply voltage and now you can select between the standard 5V ones and a 3.3V one. I did that after running in some troubles as I described here. The microSD card slot is now at the bottom of the PCB.

The shield taken off the uIoT gateway. MicroSD card slot is not populated yet

..so small, about 1/4 the size of Arduino

..back view, the slot where the OLED display will plug is clearly visible

The uIoT gateway is a much more reliable solution compared to the Raspberry Pi, once set, it is basically plug and forget. I have tested it with an emoncms.org sketch, very happy with the results.

I will put the shield as a product in the shop soon.