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Why not use something as simple as the diagram included.
just use any generic rail to rail opamp, D1 will always have 0.65 V across it no matter the dc supply. Then calculate R1 to have 0.65 across it at 4V, when the DC supply drops below 4V the negative input voltage will be lower than the...
pic16f84 nimh
then you should use the timer module in the mcu ,maybe set it to interrrupt every sec , then program a clock counter using arrays u increment (to meausre discarge time) . you could use the signal from discharge led to initiate counter. it shouldent be to difficult to calc...
im selftought in c and im beginning to be pretty good at it, but i do have some holes in my knowledge here and there.
f.eks i have never used sprintf function. but im gonna goggle it in a sec :D
pic16f84 ميتر
i dont know to much about that type of battery, but if you want the charger to determin the capacity (Amp-hour), I think I read once that they meaure the internal resistance of the battery, to determine it.
or do you mean how charged the battery is?
bare in mind im not a...
uuuhhh you'r one smart guy, great idea thanks :)
if someone can help me with the power of question, my project to measure inductors will soon be a reality..yiiipie !
I have been looking at the bcd format as suggested and I must admit I can't see how that's gonna help with my problem.
If I have a number like 12 nano stored in a float variable and want it converted so i can display it on a hdd44780 2x16 char disp.
I can't shift left, for some reason thats...
if i rember correct , there are a couple of other models from them, you might go to www.mouser.com and have a look.
i found another series of transievers, that might be somehing for you
MC13192DS
im consider my self pretty good at programming for the pic series and i dont have a clue on how to implent such a function.
I would guess some sort of algorythm would be need to analyse the recorded speech and i dont think the pic has enough processing power.
just look at the commercial speech...
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