AVR-Chat

I think that pretty much anything with an ADC would be enough.  You  
could also get something with built in PWM so you could vary the  
charge voltage as the charge nears completion.  The ATMega 16HVA, HVB,  
and 32HVA, HVB are designed to be chargers.  You could also go with a  
general purpose device.

Finally, although you can get by with a 6 or 8 pin chip for what you  
want, you might want to go with more pins so you can dedicate pins to  
the programming header.


On Mar 13, 2010, at 11:01 AM, syberraith wrote:

> I want to build a battery charger with a bit of intelligence, just a  
> bit.
>
> I would like the charger to check the battery voltage every so  
> often, one a minute at most, and if it has reached a set value, I  
> would like the charger to shut it self off.
>
> I would also like charging to commence with a push of button to  
> prevent a power interruption from starting a new charging cycle.
>
> To accomplish this I was wondering what device would be  
> appropriate.  All it has to do is control a relay, and have a single  
> ADC.
>
> Any suggestions?
>
>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>