Whites Surf PI schematic

[nelson]

Thanks Dirceu. I will try later this mod. Anyway i think i must check al components values, cause my detector can realy get more deep. So may be some capacitor or resistor in the circuit is diferent and this causes my poor sensitivity.
Regards
Nelson

Hi! NELSON

Does 15 us delay.

DIRCEU

[humhum]

Discrimination

Hi DIRCEU and NELSON , How is the result of metal discrimination in your machine?.

[DIRCEU]

Hi DIRCEU and NELSON , How is the result of metal discrimination in your machine?.

Hi! HUMHUM

Really discrimination do not exist but it is a good machine for beach hunting.
I am working now in BARRACUDA.

Best Regards
DIRCEU

[nelson]

Hi, yes i agree with Dirceu.
My detector is working ok, but need just more deep. I think is a problem with somo wrong component place on the board.
Regards
Nelson

Hi DIRCEU and NELSON , How is the result of metal discrimination in your machine?.

[humhum]

Thanks for all answer. Do you do Baracuda discrimination?
I waiting you for result with Baracuda.

Best regard.

[DIRCEU]

Thanks for all answer. Do you do Baracuda discrimination?
I waiting you for result with Baracuda.

Best regard.

Hi! HUMHUM

Maybe a single VU indication between ferrous and non-ferrous.



Best Regards
DIRCEU

[humhum]

Hi! HUMHUM

Maybe a single VU indication between ferrous and non-ferrous.



Best Regards
DIRCEU

Yes, Maybe..

[Aiko]

Hi guys!

I also build this excellent PI. Many thanks to all and especially to Cordius for the PCB.

The detections distance is very good, but my device beeping when I touch any metallic part. I think this is some kind of electromagnetic interference. Is this normal? As I understood the discrimination pot. is for this, but if I decrease the interference with this pot, the detections depth also comes down. Is there anybody with the same problem? I will post some pictures later.

Regards!

[Aiko]

This is my handmade. One euro cent detect clear at 15 cm. 1 euro maybe 30 cm.

[Geo]

Very good Aiko. Small, light and with good performance detector.
I Like it.
There is another reason. Your construct likes with mines.....
Much...much Hot Glue
Regards

[Aiko]

Thanks Geo

My hot glue pistol is my favorite instrument

Do you have an interference problems with your device?

Regards!

[Geo]

Thanks Geo

My hot glue pistol is my favorite instrument

Do you have an interference problems with your device?

Regards!

Hi Aliko
No problem

[Aiko]

No interference beeping in your device? Strange Maybe this is not exactly interference, but when I touch any metallic part of my device it beeps at once.

[Qiaozhi]

No interference beeping in your device? Strange Maybe this is not exactly interference, but when I touch any metallic part of my device it beeps at once.

Try connecting the metallic case to the 0V rail.

[Aiko]

Try connecting the metallic case to the 0V rail.

Did you make this PI? Even I touch the ground (minus on the batteries) it follows a beeping sound.

Regards!