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Maybe with the LM3914 but the LSBs get a bit wonky with only 8 or 10bits of ADC resolution if you try to simulate the Log scale output of the LM3916 or LM3915.Easy to do this with a processor with an A/D. Most of the 3914/3915
features. And do many more segments. A little less LED current.
Even though 3914/15 say current regulated its not very precise or
matched. Easy to implement various modes like moving segment,
or moving blank segment, or even variable gap.....
Regards, Dana.
You sound like you actually expect it to work when you get it. Happiness is when expectations match reality. I don't see happiness in your future if you order one.I notice that the ebay "LM3915" has its numbers removed and the board is marked "L1103" instead.
Yes at 8 - 10 bits but we have processors now regular doing 12, and no shortage ofMaybe with the LM3914 but the LSBs get a bit wonky with only 8 or 10bits of ADC resolution if you try to simulate the Log scale output of the LM3916 or LM3915.
Which version do you have?A little more than 54 years ago I bought some modules made by National Semi with an LM3915 chip in a "blob on board" and a strip of 10 dim red LEDs.
I have an LM3915 in a microphone circuit I made with 20 LEDs and a circuit adding 20dB to it. It shows the sound levels in my living room and has been there for at least 24 years.
Well if you had, perhaps the LM3915 would still be in production! .I've never found a project worth completing.