Re: 2x16 LCD display in battery powered application?


> It's a 5V system so that would translate into 128uA (0.128mA). I read a
> data*** from Rohm which claims their LCD module will use typically 0.5mA
> so that will translate into only about 2months of operation and possibly
> less since I didn't take into account power usage of the microcontroller.

I think a big part of the power if for the logic. On custom display, you
often have 1 dataline per 'symbol', the controller is not included. Here
the display needs to be refreshed constantly and there is the char ram
etc ...


> So how would one go about this? Is it just about segments? Segmented LCD
> displays (with custom symbols and all that) ussually only consume microamps.
> Are there no character or graphic LCD displays out there with very low power
> consumption?

As suggested in another post, the panel might not need to be powered all
the time. Cutting the whole power would be better.

Depending on space constraint, you can find better batteries. One D
sized cell might give you > 8500mAh.

Or some camcorder battery pack are like 7.2V with >2000mAh.

Add a solar panel ? ;)


Sylvain
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