[mythtv] advice wanted - building my own remote control

Tom Lichti tom at redpepperracing.com
Wed May 9 17:24:52 UTC 2007


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?

Tom



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