I have two voltages I'm measured on input power and output power of a 4 pin connector. I wish to display voltage, which varies from 0-28v, and I want respective leds to light up when there is any voltage > 0v present.
I'm thinking to use this display: http://dx.com/p/3-digit-red-led-display ... 30v-149570
My primary concern is how to set up a LED to turn on when ANY voltage is present without interfering with the display voltage.
Thanks in advance!