Why would you use a lm3914 bargraph LED generator? You are not going to get precise readings at all, with only 1 sig fig of resolution. Presumably to test 9V batteries? If anything use a few 7 segment LED drivers and a 8 or 10 bit ADC with a parallel output to drive the digital inputs of the 7 segments. That way you can get a nicer digital readout with 3.00 significant figures.
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3 years ago
Why would you use a lm3914 bargraph LED generator? You are not going to get precise readings at all, with only 1 sig fig of resolution. Presumably to test 9V batteries? If anything use a few 7 segment LED drivers and a 8 or 10 bit ADC with a parallel output to drive the digital inputs of the 7 segments. That way you can get a nicer digital readout with 3.00 significant figures.
Answer 3 years ago
Because its overkill ?
Answer 3 years ago
Yeah, probably. But I like acuracy and presicion.
Answer 3 years ago
I see what you did there.
Answer 3 years ago
Whoops! Seplenig mistaeks!!!! I hate those!
3 years ago
Here is the original circuit
http://www.electronicshub.org/battery-level-indicator/