Tobias Gogolin wrote:

>Yes there could probably be a automatic adjustment mode, where the head
>temperature or electric energy output is used to figure at which balance
>between fotoresistor readings the optimum is... but I think I better make
>that a manual option!
>  
>
I was actually envisioning a situation where you point based upon 
calculated az/el values, and then use the photoresistors only to 
determine if it really needs to be above/below/left/right of the 
calculated values to ensure proper alignment.  I.E. calculate that the 
array needs to be at 32*x15* from lat/long and time, and then use the 
resistors to tweak it slightly - if you get meaningful data from them.

>The bootloder came up before I guess thats a chip that is 'Self-programmable under software control'
>like one of these:
>18LF4320
>or
>18LF4539
>those bootloaders are some of the shelf programs?
>where do I find them?
>  
>
Most of the modern PIC's will do this.  There's also a appnote by 
microchip on this.  Google "PIC Bootloader" or "Bootloader 18F4320" or 
similar.

-forrest
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