scarygood536
New Member
After building Audioguru's LED flasher to music i want to build something more intense. That circuit was fine and did the job but I want something more tuned to bass. I did put a bypass filter guru's circuit but didn't lie the results.
So which brings me to my next project VU meter. Attached is a schematic of a VU meter i found on the internet. I wish i found it back when i was in my modding xbox phase . Now This circuit is designed for a "stereo output" RCA jack. I would like to have the flexibility to be able to use it for a mp3, computer speaker, or at the end of a stereo speaker (so i can put the LEDs in the speaker. is there anything i need to change? can i just put a potentiometer to limit the current(although there is already one in there)? I already see that this schematic has constant power and the creator just opens and closes the audio signal. Also, He combines the left and right channels is this going to pose a problem besides it being mono?
Also, In case i need to draw a schematic for you guys what would be a good program to draw it with?
and for 12 volts can i use a door bell transformer and use a bridge rectifier to convert to DC then add a capacitor and limiting resistors? seems to me the transformer might be to big for the job i rather just use a 9v although it couldn't do much for very long.
Thanks for any input,
Jeff
So which brings me to my next project VU meter. Attached is a schematic of a VU meter i found on the internet. I wish i found it back when i was in my modding xbox phase . Now This circuit is designed for a "stereo output" RCA jack. I would like to have the flexibility to be able to use it for a mp3, computer speaker, or at the end of a stereo speaker (so i can put the LEDs in the speaker. is there anything i need to change? can i just put a potentiometer to limit the current(although there is already one in there)? I already see that this schematic has constant power and the creator just opens and closes the audio signal. Also, He combines the left and right channels is this going to pose a problem besides it being mono?
Also, In case i need to draw a schematic for you guys what would be a good program to draw it with?
and for 12 volts can i use a door bell transformer and use a bridge rectifier to convert to DC then add a capacitor and limiting resistors? seems to me the transformer might be to big for the job i rather just use a 9v although it couldn't do much for very long.
Thanks for any input,
Jeff