Cellphone-controlled home
posted Sep 6th 2009 12:00pm by Jacob Wojfiled under: cellphones hacks, home hacks, pcs hacks
[Tixlegeek] used a Motorola 68HC705J1 development board to remotely control his home through his cellphone. The video above, as well as [Tixlegeek]‘s website, is in French, though the video has been captioned. The development board (called the ERMES125) is controlled by a PIC externally. It has an array of LEDs, and apperantly a few high voltage relays. The PIC is connected to a laptop through a serial interface. The laptop is running a small web server, which uses CGI to control the PIC from a webpage. This system allows [Tixlegeek] to log onto the webpage from his web enabled phone, click a few buttons, and have appliances turn on or off through relays controlled by the PIC (via serial signals from the laptop).








Nice job of pulling it all together into a useful system. I prefer to have both feedback sensors and a watchdog circuit on any remotely activated, mains powered project, though.
Using UL rated COTS equipment helps with that.