After too long putting up with poor charging (and lately the primary
winding of my main charger's transformer failing) I've decided to make
my own charger for batteries and power tools. All of the chargers I
have are very simple affairs, often no more than a resistor and diode
and probably doing more harm than good

Looking around for something smarter, I find this one

http://www.angelfire.com/electronic/hayles/charge1.html

Based on Fig 9

http://www.angelfire.com/electronic/hayles/charge1fig9.html

my understanding is that you'd look for a peak voltage and then drop
back to trickle charge. That voltage would be proportional to the
number of cells and set for the PIC's A2D by the resistor divider

It seems a simple enough project to enhance and port to any PIC with
A2D. Would welcome any comments re operation/methodology

wbr
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