It’s an Arduino shield that adds a Linux SoC ... with the Dragino HE module being the most difficult part to source.

Keyestudio’s Easy Module Shield is a learning platform for those just entering the world of Arduino and doesn’t require any soldering, making it easy to use as well. The add-on board features a DHT11 ...

Going this route makes replacing a burnt out chip as easy as plugging in a new module. The terminal block in the center feeds the higher voltage rail necessary for driving the motors. The DIL ...