Easy dial telephone
posted Nov 1st 2009 11:20am by Mike Szczysfiled under: home hacks
[Taufeeq's] Grandmother needed to be able to call her family members but due to ailing eyesight and memory this was a difficult task. He decided to help her with this by building a telephone that will auto-dial a number at the push of a button. [Taufeeq] built a case to hang on the wall which houses a hook for the receiver and two auto-dial buttons. The buttons are lighted and loosely based on the LED push buttons we covered in January. Housed in a separate box are a microcontroller and a dual tone multiple frequency IC used to dial the numbers. These are patched into a PCB from a standard telephone.
The result looks great and makes using the phone much easier with the simplified controls. We’ve included the demonstration video after the break.
Go there and see video...
http://hackaday.com/2009/11/01/easy-dial-telephone/
Don
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