"T i m" wrote in message
...
On Thu, 21 Sep 2017 21:23:26 +0100, "Dave W"
wrote:

snip

should be driven so that when the
battery voltage is below 10V the meter is still on its zero mark, and
full scale for 15V. You are driving it from the Arduino so it can be
any old range e.g. 10mA fsd.

In this case I was going to make a straight analogue meter Dave, both
amps and volts mounted in a suitable box and to be (optionally)
plugged in series with the load. If the voltage drop at max current
affects the voltage too much I'll run a separate cable back to the
battery directly.

I don't understand.

--
Dave