Alarm System Remote Control
Remote control for home central alarm system, it shall communicate data and voice by radio with the central system in 433MHz or 868MHz depending on the country. Shall have a graphic color display with friendly menus. It could run on batteries
It was based on a Cortex M3 from ST and the Simplicity radio of TI. The voice was compressed with speex in the Cortex M3 to be sent over the narrow radio band. FreeRTOS and free GUY where used to support the system.
The main characteristics are:
• 3.5’’ display with 320x240 resolution
• Custom keyboard with backlight
• Dual band 433/868MHz for data and voice
• Run on batteries when out of the cradle