Voodoo Main Discussion

[lamoiz]

Did you miss post #536?

bonjour George,
here are two images,
tp6 tp10
tp 7 tp8

I also noticed that in hybrid mode, the non-ferrous bar is at maximum, with no target above ..

[lamoiz]

I see absolutely nothing on tp 8 ... why ..

[surfdetector]

I see absolutely nothing on tp 8 ... why ..

Hi lamoiz would you post a picture of Pin #1 and Pin #13 from the 4066?

[lamoiz]

Hi lamoiz would you post a picture of Pin #1 and Pin #13 from the 4066?

hi surf, thank you for helping me here are the pictures of pin 1 and pin 13. there is also tp2 debug on it ..

[surfdetector]

hi surf, thank you for helping me here are the pictures of pin 1 and pin 13. there is also tp2 debug on it ..
[ATTACH]53881[/ATTACH][ATTACH]53882[/ATTACH][ATTACH]53882[/ATTACH]

Hi, Are you on 10x attenuation on your probes and also on the oscilloscope? The amplitude of your signals does not look correct it is much too small I think.
Can you show Pin #1 of the 4066 again at 100uS

Please also show Pin #1 and #7 of the 5532

[lamoiz]

Hi, Are you on 10x attenuation on your probes and also on the oscilloscope? The amplitude of your signals does not look correct it is much too small I think.
Can you show Pin #1 of the 4066 again at 100uS

Please also show Pin #1 and #7 of the 5532

here are the curves with the 10/1 probe. 1 from 4066 and 1 and 7 from 5532 ..
thanks Alec

[lamoiz]

hi guys, i found what is generating poop signals. no more beep beep beep, I had made an extension of cable between the circuit and the various coils to be tested .. in fact it's been two weeks that the circuit works perfectly .. but because of this nasty cable (test) well i had all the miseries in the world .. the circuit works very well .. cool.
this afternoon I will do the coil with the rg58, normally the result will be good!

[surfdetector]

hi guys, i found what is generating poop signals. no more beep beep beep, I had made an extension of cable between the circuit and the various coils to be tested .. in fact it's been two weeks that the circuit works perfectly .. but because of this nasty cable (test) well i had all the miseries in the world .. the circuit works very well .. cool.
this afternoon I will do the coil with the rg58, normally the result will be good!

That is good news! Is the noise on your pre-amp output gone now?

[Qiaozhi]

hi guys, i found what is generating poop signals. no more beep beep beep, I had made an extension of cable between the circuit and the various coils to be tested .. in fact it's been two weeks that the circuit works perfectly .. but because of this nasty cable (test) well i had all the miseries in the world .. the circuit works very well .. cool.
this afternoon I will do the coil with the rg58, normally the result will be good!

I'm very pleased you found the problem, as it was becoming difficult to figure out what could possibly be wrong.

[Mdtoday]

Had some spare time tonight so started porting the Voodoo code to XC8 compiler.
Pretty much down to adding the ADC/LCD header files and a small number of syntax changes to go.
Should be completed over the next night or two if time allows...
I haven't built the hardware but can compile and post the project files along with the hex file if someone would like to try it. Will be a little while til I get round to the hardware.



Cheers

[lamoiz]

hi Surf, hi George, yes the output is correct now, it's crazy how sensitive the wiring is between the winding and the electronics. may be a capacitive effect .. ?? I just did a test on a winding in litz wire, .. the result is very very good ..

[Qiaozhi]

Had some spare time tonight so started porting the Voodoo code to XC8 compiler.
Pretty much down to adding the ADC/LCD header files and a small number of syntax changes to go.
Should be completed over the next night or two if time allows...
I haven't built the hardware but can compile and post the project files along with the hex file if someone would like to try it. Will be a little while til I get round to the hardware.

[ATTACH]53891[/ATTACH]

Cheers

That was fast.

[lamoiz]

everything works perfectly, still adjustments to be made .. but it works well. It's been two weeks lost because of this bad cable pff. I tested the large size omega .. it works.
thank you george, great project !!

[sbalio1]

hi to all can this machine detect gold

[Altair]

hi to all can this machine detect gold

for its properties, I believe yes, if the gold is not very tiny.