simple sound to light

Status
Not open for further replies.

sheldonstv

New Member
simple sound to light circuit designed as an add on for a dalek voice mod i built a while back....you can add a preamp before the line amp if you wish to amplify any audio signal from a microphone(electret etc)
circuit shows 3 leds but u can add more if you wish(within reason...) i used 4 hi brightness blue leds
 

Attachments

  • SOUND TO LIGHT PDF.pdf
    9.7 KB · Views: 554
  • line amp 40db.pdf3.pdf
    6.9 KB · Views: 337
Last edited:
Hi Sheldon,
You have the pins of the opamp labelled backwards on the line amplifier:
Pin 2 is the inverting input.
pin 3 is the non-inverting input.
 
that is exactly right they were reversed ive uploaded a replacement pdf file with the error corrected....gremlins must have swapped things round when i did that schematic...........
 
Status
Not open for further replies.

Similar threads

V
  • Question
Wanting To Build Solar Street Light with Multiple Features
Replies
7
Views
1K
ZipZapOuch
F
A Simple Power Supply Project
Replies
1
Views
1K
Tony Stewart
B
  • Question
Image, Light and Music
Replies
3
Views
1K
rjenkinsgb
  • Question
Tyre inflator modification. Currently powered by cigarette lighter, want to add mains power option.
Replies
6
Views
718
Diver300
D
P
  • Question
Infrared sensor light switch
Replies
17
Views
3K
Nigel Goodwin
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…