It wasn’t that long ago that projects with cellular connectivity were everywhere, but with 2G no longer universally available, glory days of cheap 2G modules seem to be on their way out. So when [Data ...

Beta-testing Matrix GSM In WashingtonI was asked to take part in a test of the Matrix with GSM module for Comrex in the heart of the nation’s capital. The technical folks in Devens, Mass., were ...

The main purpose of this device is to operate as standalone or as a module for existing alarm sytem. The design of the project is based on a PIC16F84A microcontroller and it does not require external ...