
It's been a while since we'd seen any new SMS/GSM/serial remote interface projects. [Emanuele] sent in his version of a project to do just that. It uses a PIC16F84 and will send or receive commands. A pair of relays provide options for controlling whatever you want to hook it up to. You'll need a login, but he's released the full schematics and firmware. He developed this to find uses for old phones, but an alternative is to pick up a cheap calling card cell and dedicate it to a project like this. This seems like a great way to add an out of band alarm system to your house/car/robotic minion.


1. Re #1: I don't see this as an issue. For one thing, they seem to have already figured it out without our help. Also, if the only goal is a one-off "detonate now" sort of trigger, there are much simpler and more obvious ways than building this kind of interface. Wiring to the phone's vibrate motor is one that immediately came to mind.
Posted at 1:09PM on May 28th 2008 by Orv