Recently I read, that the Dragino Single channel gateways do not work anymore (because of a change of the backbone). But I read also, that the small ESP8266 gateways still work. The problem seems to be solved. So, I built such a gateway. It can be mounted on a Wemos and you can also mount a small OLED display on top. Cool.
In addition, two Neopixels show the state of the gateway.
Look at the size of the Gateway (right) compared with the Arduino/Dragino node. it is really cute!
I am now preparing the video to show you, how to build it.