Surf PI Micro Variant V1.00 :- PIC Controller hex file.

[WM6]

In actual use, there is no memory button is very inconvenient, you have to adjust the machine while walking, in this case, you can never use

Did you change something according to schematic component parts?

What is your coil data?

It is 8 years you are member here and you still " don’t know how to place the picture" in forum post ?

[liudengyuan]

I have not placed any components, everything is assembled as is, I don’t know how many bits the ADC of this single-chip microcomputer is, whether it is too low

[Qiaozhi]

I don?t know how to place the picture, the circuit is just a simple two-stage amplification, there is no way to deal with the signal, unstable, low sensitivity

Click on "the "Go Advanced" button, and then select "Manage Attachments".

[WM6]

I have not placed any components, everything is assembled as is,

So you didn't build this project by yourself, you got board already build?

What is your coil data?

Post photos of your project according Qiaozhi instruction.

[liudengyuan]

My coil has a diameter of 40cm and an inductance of 290. I don’t know who has its source program. I want to modify it. We have to set a memory button to facilitate the operation. And we need to set up an automatic balancing circuit to deal with the instability of the circuit.

[WM6]

We have to set a memory button to facilitate the operation.
And we need to set up an automatic balancing circuit to deal with the instability of the circuit.

You are free to do such improvement.

Post photo of your Surf PI Micro first, otherwise further discussion is without real sense.

[liudengyuan]

If you don’t believe it, you can experiment by yourself. If you have some experience with the detector, you can see at a glance that this is just the basic circuit of the detector. Any circuit that adjusts the critical sound by the potentiometer can basically only be placed in Experiments at home, if you go to the field to detect, basically can not be used, because of mineralization, interference, temperature drift of components, so you have to constantly adjust the critical point