Looks like the Golden will not supply what I was looking for.

[Mike Hillis]

Well, I am already learning things from this forum.

Also saying a thank you to those of you who have already helped me out.

I found a Golden uMax circuit trace effort here that that tells me the Golden is not going to help me in my project. Seems the Golden uses a programable IC to generate its tone id.

That also tells me why the Bandido, Pantara, Silver Sabre, and the Eldorado are popular circuits...no PIC's in them.

So, my plan is really unchanged, which is to build the Bandido using a modular PCB arangement so that I can move, add, or modify a application block without disturbing the complete circuit. Then, build the 10 audio circuits and figure out where and how to intergrate them.

The goal for the audio is to have a seperate, distinct tone for each conductive category: iron, foil, nickel, tab, zinc, dime, quarter, half,dollar, and large signal overload. Each of these tone id categories will have it's own notch in/out capability. Also will be included the ability to group categories to tones as desired for any particular hunt.

Happy Mods everyone!

Mike

[Mike Hillis]

Re: Looks like the Golden will not supply what I was looking for.

I think that I can replace the Discrimination pot with a voltage comparitor. Then after a little bit of calibration, I could route to audio circuits based upon incoming voltage.

The 555 will work fine for the audio circuits.
It will function as a voltage comparitor but I'm not sure I can get it down to the detail needed. May have to match it up to a step generator to get the level I need.

Any thoughts?

Mike

[Mike Hillis]

Re: Looks like the Golden will not supply what I was looking for.

Nope. That will not work. I wonder why they run the signal through the disc ciruit so early in the game. I had always thought that the disc circuit came late. I would think that you would process the signal first and then at the last run it through the disc circuit.

Hmmm....