Voodoo Main Discussion

[lamoiz]

I have answered your questions. Maybe you missed my answers, or you were expecting an instant reply. Sometimes it takes some time to receive a reply due to different time zones, so you have to be patient.

I'm sorry George if you think about it. I respect your work and this message was not for you.

[lamoiz]

question for everyone, do you think it's a good idea to make an omega? even if it's just for testing? or is it certain that I will fail ..? your opinions please

?
Does somebody have an idea ?

[lamoiz]

The F75 coil performed well. See pages 70 and 71.

it is bad in PI mode and excellent on coins in the garden .. but on gold or small targets? george I will give my results on a well-tuned omega. my test will be in target size, depth and type of metal.

[Qiaozhi]

it is bad in PI mode and excellent on coins in the garden .. but on gold or small targets? george I will give my results on a well-tuned omega. my test will be in target size, depth and type of metal.

It isn't bad in PI mode. It's just that only the TX loop is active, which means the target is detected to one side of the coil centre.

[lamoiz]

thank you george, that s what i understood.
something else, have you ever tried to make an oval or elliptical concentric coil?

[Qiaozhi]

thank you george, that s what i understood.
something else, have you ever tried to make an oval or elliptical concentric coil?

See pages 71 & 72, and Table 6-1.

[lamoiz]

See pages 71 & 72, and Table 6-1.

oops yes indeed. my last elliptical coil was double D inside .. i didn't know the one featured in the book was concentric .. excuse me ..

[mouh]

Hello all

Qiaozhi Thanks above all ; my question is
Can I change this PIC18F4520 with this one PIC18F4550


thank you

[MartyJ1963]

Hiya George. Could you tell me if I've marked this diagram correctly please? And also, The 'PL' plugs marked A, B, C and D, which one is Menu, up, down and enter please? I was going to start building today but realised I had to wait for my order of 79L05's. Thanks, Marty.

[surfdetector]

Hiya George. Could you tell me if I've marked this diagram correctly please? And also, The 'PL' plugs marked A, B, C and D, which one is Menu, up, down and enter please? I was going to start building today but realised I had to wait for my order of 79L05's. Thanks, Marty.

Menu (RC6) = "A"

Up (RC5) = "B"

Down (RC4) = "C"

Enter (RD3) = "D"

[MartyJ1963]

Thanks Alec. Have you started building yet? Regards, Marty

[MartyJ1963]

Have I put the 'Positive' and 'Negataive' symbols in the correct place on my diagram? Really struggling to see all the details on these small drawings in the book,,,Must be old age and my eyesight!,,Lol,,Thanks, Marty.

[Qiaozhi]

Menu (RC6) = "A"

Up (RC5) = "B"

Down (RC4) = "C"

Enter (RD3) = "D"

That's correct.

[Qiaozhi]

Hello all

Qiaozhi Thanks above all ; my question is
Can I change this PIC18F4520 with this one PIC18F4550


thank you

I don't know without trawling through the datasheets, but it appears to be pin-compatible. That doesn't mean of course that the register contents or the config bits are the same. Anyway, either way you would have to recompile the source code for that particular PIC.

[Qiaozhi]

Hiya George. Could you tell me if I've marked this diagram correctly please? And also, The 'PL' plugs marked A, B, C and D, which one is Menu, up, down and enter please? I was going to start building today but realised I had to wait for my order of 79L05's. Thanks, Marty.

All looks good.