Greetings fellows, I'm trying to do up a circuit with the LM3915N-1 IC to Display audio input for different projects I'm working on, there appears to be many circuits available online, mostly the same schematics but different resistors regarding Pins 6, 7 and 8, something to do with voltage reference.
I have tried many of the different variations of resistors and cannot for the life of me get this circuit to work with proper LED brightness and audio input adjustment via 50k pot. All I'm getting is faint LED performance.
I'm trying to monitor line level or earphone level audio. Below is the link to the circuit.
**broken link removed**
I have a 12v power supply powering both LEDs and IC.
Any ideas?