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LED bat. indicator

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RC Bot dude

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Does anyone know how I might have a row of LEDs that act as a battery indicator (say 5 in a row and if 1 5th of the battery power was gone only 4 LEDs would be lit).
 
Series Connection

Hi there,
try to connect them thru a multiplexer having i/p from adc & try some similar stuff using adc/resistor divider for checking app.voltages

Bye,
Yatin
 
Hey bot dude, what voltage is the battery?
 
I think this is what you want. ???
 

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  • LM3914Voltmeter.gif
    LM3914Voltmeter.gif
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the above circuit can be modified to support two variable resistances that allow u to control both the upper as well as the lower limit of voltage to be measured ,refer to the LM3914 datasheeet for the pinouts.
 
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