What I am attempting is to take 7 specific voltages, and display certain numbers for these specific voltages on an alpha-numeric display.
What I currently have is a resistor ladder that breaks up the voltage. The resistors form a ladder that breaks up the 5v from a voltage regulator into reference signals to determine at what voltages an LM339N will use to ground each corresponding LED. It use 1% resistors to make sure I get exact reference voltages because in the higher gears the signal is very close and there is not much gap between voltages. The output voltages from the sensor are as follows 1st gear = 1.782v 2nd gear = 2.242v 3rd gear = 2.960v 4th gear = 3.630v 5th gear = 4.310v 6th gear = 4.660v Neutral = 5.000v The comparators in this circuit will turn on each LED as follows: 1st LED = Anything over 1.022v 2nd LED = Anything over 2.043v 3rd LED = Anything over 2.660v 4th LED = Anything over 3.356v 5th LED = Anything over 4.052v 6th LED = Anything over 4.526v
I now want to take thes voltages and convert them to show the proper gear on an alpha-numeric display.
How can I turn what I have working in to alpha numeric?
Or, Do I have to start a whole new circuit. Something that takes the voltage and turns it into a digital signal and then sends to an A/N LED display.