There are 12 connections in total (6×2 rows) on the SIM800L module and, surprisingly, one row contains all of the connections required to interface with a microcontroller like the venerable Arduino ..

Here, I’m using the SIM800L and Arduino Nano V3 to develop a nifty one-channel SMS relay. The device is, in fact, an “isolated electric switch” that can be controlled through the messaging app on your ...

[ElementalMaker] decided he’d finally hit the point where he needed to put together a low-cost test stand for his motors ... the stand’s onboard Arduino does both automatically.

Arduino users and enthusiasts may be interested ... and allow anyone to set up a simple “smoke test” on every commit and pull request made to a GitHub repository, with reports on the impacts ...