Checked all that you mentioned. Nothing.
I will lay low for a while till I can get some stuff sorted out and I get the stuff I need from DigiKey. Until then, I am humbly greatful for the insight and time audioguru. You are the man :)
I tried a different electret mic. It is now reading 1.44VDC. The mic I had may be bad but it still isnt the solution. Going through the pins I get :
pin 1: 2.34VDC, 4.6VAC
pin 2: 2.34VDC
pin 3: 2.34VDC
pin 4: 0VDC
pin 5: 0VDC
pin 6: .08VDC
pin 7: .51VDC, .6VAC
pin 8: 8.14VDC
So after a little while working on it today, here is what I found out. Pin 6 after the R9 is getting virtually nothing (.08VDC). We have ~2.5V at pin 1. When that goes through C4 we end up with the .08VDC that goes into pin 6.
If I wanted to test the microphone alone, would I put the meter on...
What were your values for pins 5, 6, and 7 of the amplifier? Or maybe a better question, what are the ideal values for those pins of the amplifier?
I remember you saying that pin 7 should be between 1 to 4 VDC but I am lower than that.
Error on my end.
Pins 5, 6, and 7 are 0, .09, and .52 VDC respectively.
However, I still did replace it. Pins 5, 6, and 7 are 0, .09, .52 VDC respectively. Funny that they are exactly the same.
Sorry for the error.
I think I may have been unclear. The pins 1, 2, and 3 of the 358N are all 2.36 VDC. The output pin I was talking about was pin 7 of the 358N.
For the second ampifier in the 358N. Pins 5, 6, and 7 are 0, .9, and .52 VDC respectively. Pin 7 or atleast that set of pins is the problem I think.
Maybe the fact that i dont have a 3915 is also limiting my progess. I checked pin 1 and it was infact 2.44V. The output pin was .66VDC. The electret mic is at 1.94VDC. Pin 5 of the 3916 is at .15VDC and pin 6 of the 3916 is .48VDC.
So now, where is a good place to get the LM3915 for a fair...
Yea I was afraid of the microphone not working. I can hope that it might be the pre-amp.
Anway I did change the resistor you mentioned and I get a bout .18VDC at pin 5 and .49VDC now.
Would you be able to recommend another pre-amp that would work with an electret microphone and give a good...
Okay I found 2 resistors that were sorted together. I am getting somewhere now. I am getting .1VDC at pin 5 of the 3916 and .24V at pin 6. I turned the POT down and I have only a few LEDs light up now but now still move. If I can get the pin 5 voltage up from the microphone (dont even know if...
So here are a few points that will hopefully help you understand my situation better.
1. I am using all 3904's
2. I am using the 358N and I know it will be more of a 'beat' meter than a frequency type since the 358 is limited to about 4kHz.
3. At pin 5 of the 3916 I get 6.9DC and 14.x VAC...
So I have big hopes for my LED project. I have been stocking up on high quality LEDs and rechargable batteries just for this project.
Anyway here is the problem. I am using LM3916 drivers, and alone I can get it to do what I want with the signal (from sound card) connected directly to the...