hi,
i'm building a voltmeter using led readouts,i require two readouts for two separate batteries and one for total voltage,the circuit is easy enough,the problem I have is that I need to calibrate the led displays that I have bought so both read what the batteries are,what im looking for is the difference between the 2 voltages,i need the correct size trimmer pots to calibrate the displays.any helpers?
Gabriel.
i'm building a voltmeter using led readouts,i require two readouts for two separate batteries and one for total voltage,the circuit is easy enough,the problem I have is that I need to calibrate the led displays that I have bought so both read what the batteries are,what im looking for is the difference between the 2 voltages,i need the correct size trimmer pots to calibrate the displays.any helpers?
Gabriel.