Hi every one,
I want to implement a simple battery level indicator, the level will be displayed on GLCD.
I have no idea on how to implement the hardware that measures the battery level. First of all, what are we measuring, is it the battery voltage level?
I need to measure 8AA batteries that is giving 12V.
Many thanks for any info and circuit diagrams.
PS. I know how to control the GLCD...its just building a suitable circuit to measure the battery level and reading this with the microcontroller connected to GLCD (which suggests that readings will have to be digitised...which means an ADC somewhere? )
Regards.