I want to try and use an avr to make a simple DVM, using 7-seg LED displays.
I wont be using an arduino, but a standalone '328 programmed with the arduino dialect.
The input voltage will be around 0.5V maximum, so the A/D converter will yield a decimal
result of 100, stored, presumably, in a long integer.
For reasons which need not detain us, I will multiply that figure by a fudge factor, so that the maximum
reading I get will be 2500. Now, how to get this to display as 2500 on four 7-seg displays?
I was guessing that you could ( somehow ) isolate each digit in its own integer and display them
sequentially on the display, but the gap between that and an end result is very wide indeed.
Yes, I have Googled: everybody uses LCDs
Can anybody help?