I am working on one of the projects in the book Electronics Projects for Dummies. This is my first electronic project ever and so I followed the books instructions and checked my design against every diagram I could but it still doesn't work.
What the project does is that it lights up groups of LEDs based on the pitch of a song that is playing (one group for high, one for low). It uses a microphone obviously and has 2 op amp ICs as well. I used a multimeter to check and make sure that the electricity was flowing everywhere it needed to and it was except for the wiring to the LEDs. The first LED had around .25-.5 of a volt (on a 6 volt circuit) and after that one there was no power. I assumed that that was ok since if there was power all the time then the LEDs would be on all the time which isn't the idea of the project. I thought maybe either the microphone or the ICs were defective.
does anyone have any ideas to help?
What the project does is that it lights up groups of LEDs based on the pitch of a song that is playing (one group for high, one for low). It uses a microphone obviously and has 2 op amp ICs as well. I used a multimeter to check and make sure that the electricity was flowing everywhere it needed to and it was except for the wiring to the LEDs. The first LED had around .25-.5 of a volt (on a 6 volt circuit) and after that one there was no power. I assumed that that was ok since if there was power all the time then the LEDs would be on all the time which isn't the idea of the project. I thought maybe either the microphone or the ICs were defective.
does anyone have any ideas to help?