I'm working on building a VU meter that will detect voltages from 0-5 volts. If the voltage exceeds 5 volts it will trigger a 12 volt relay. I found a circuit diagram using a lm3915 ic. The audio input will be from a small microphone. Can someone tell me how I can set it up so that it detects the 0-5 volts and lights the leds in 0.5volt increments? Also, how can I make it trigger the 12 volt relay when it exceeds 5 volts? Thanks
Attachments
-
15.2 KB Views: 151