How can I make an electronic balance that would output a voltage and light a series of LEDs?
The display will be used to represent weight (weight would be between 1 and 100 lbs) and will be used in a competition in which coins will be added into buckets setting on the scales or load cell platforms at varying rates. I will make two identical units and would like for the displays to remain active throughout the competition which should last less than 20 minutes. The purpose will be to represent which bucket has the most weight at any given moment and the accuracy only needs to be the same for each device. In other words, if the buckets were switched, the results would be repeatable (accurate within one LED (or perhaps a better light arrangement may be suggested)).