[mythtv] advice wanted - building my own remote control

[Simon Kenyon]

Tom Lichti wrote:
> Simon Kenyon wrote:
>   
>> Tom Lichti wrote:
>>   
>>     
>>> Simon Kenyon wrote:
>>>   
>>>     
>>>       
>>>> i have the complete toolchain working for the devices that i'm using 
>>>> (Atmel AVR - ATmega88 is what i have to hand at the moment).
>>>> there is a complete, workimg gcc etc. for the device, which is a major 
>>>> plus point.
>>>>   
>>>>     
>>>>       
>>>>         
>>> Er, I am looking for a small (2"x2") remote with maybe 6 or so keys, but 
>>> have not been able to find one, could you build one that small?
>>>
>>>   
>>>     
>>>       
>> don't hold your breath, but i'll give it a shot
>> might make a good test for my design/build/code skills
>>
>> there is a design from atmel which uses their attiny28 chip.
>> can handle up to 64 keys and will generate RC5 with the supplied code
>>
>> problem is that the chip needs an unusual programming method for which i 
>> don't have a programmer
>> i do for the majority of their other chips. so i am trying to adapt the 
>> design to use the chips i can handle.
>>
>> the buttons themselves are either 6x6mm or 12x12mm, so 2"x2" (ie. 
>> 50x50mm) would work with the 6x6mm keys.
>> that would leave room for the connectors around the sides of the switches.
>>
>> i have a bunch of 6x6 keys on order, so give me a few weeks to see what 
>> i can come up with.
>>   
>>     
> Sounds cool. I'm not sure what protocol I need as I want to control 
> existing devices, not a Myth box. Would that add too much complexity to 
> the design?
>   
don't know
have info on the sony protocol and RC5 (which is what a lot of devices use).
first thing is to get anything work and go from there.

--
simon