Need pinpointer schematic

[Rom_1]

Hi,
i'm looking for a schematic to do a pinpointer who work like the garrett propointer or the deteknix xpointer with target proximity sound speed increase.
Any idea to do this ?
Thanks for your help.

Rom_1.

[Skippy]

All the better quality pointers, like the Garrett, ML ProFind etc will use a micro-controller IC in them to take care of auto-calibration, sound generation, sensitivity control etc. So a circuit diagram is not too useful, unless you understand the micro operation, and are able to program your own equivalent code.

[Eddy71]

To write code, you must have circuit first

[Skippy]

A partially-complete circuit diagram of the Garrett ProPointer is in existence. I've seen it on this Forum, and on a Russian Forum. And I've partially reverse-engineered it myself.
It's a high-Q 12KHz oscillator, whose oscillation amplitude drops slightly when metal is brought near the ferrite rod. A peak-detector gives a DC measure of the amplitude, that DC level is fed into a micro's 10 or 12 bit ADC. At power-on, software stores the "no metal" voltage, then any subsequent drop in amplitide will trigger beeping, at a ever-increasing rate as the voltage falls.
Add a voltage regulator, vibration motor, and that's most of it.

[Fabian]

Hi,
i'm looking for a schematic to do a pinpointer who work like the garrett propointer or the deteknix xpointer with target proximity sound speed increase.
Any idea to do this ?
Thanks for your help.

Rom_1.

Try this:

http://www.geotech1.com/forums/showt...ing-thin-chain

Read the entire thread, please!

Cheers

Fabián

[homefire]

This one is super simple and works quite well. http://www.thunting.com/smf/modifica...4776#msg294776

[kt315]

This one is super simple and works quite well. http://www.thunting.com/smf/modifica...4776#msg294776

notice if you mention a project THE name of that. what you give the link is MALYSH FM2 pinpointer. russian schematic.

[homefire]

We gave made two on the other forum and works surprisingly well. Low Parts count. Common parts and Simple lay out.

[Rom_1]

Thank you all, i think try the Malysh Fm2.
Homefire have you a partlist and hex file you use and work well ?
Is it work on wet sand ?

[DanShield]

Hi! I'd just uploaded a video clip from my latest project. A pinpointer I believe works like a Garrett pinpointer. At least in a basic way.
Take a look at https://youtu.be/soZduY9wAs8

[Toros]

Thank you all, i think try the Malysh Fm2.
Homefire have you a partlist and hex file you use and work well ?
Is it work on wet sand ?

The original is here: http://smartelectronix.biz/publ/pros...bkami/1-1-0-74 , in Russian

Download is here: http://smartelectronix.biz/load/0-0-0-63-20

[Koala]

The original is here: http://smartelectronix.biz/publ/pros...bkami/1-1-0-74 , in Russian

Download is here: http://smartelectronix.biz/load/0-0-0-63-20

I built on ages ago. work okay on the bench but unstable in the field. Might be different now if the firmware has changed

[Toros]

I built on ages ago. work okay on the bench but unstable in the field. Might be different now if the firmware has changed

Koala, the link is to the new scheme and new software with bug fixes(27.05.2015).

[popka-ru]

as far as I understand, you need the most approximate sounding like a garrett. yes, there is such a one, but there are no circuits and the pins as well as the schemes with firmware can be tried to buy https://vk.com/pinscher_md
https://youtu.be/6NWsQQ4v9P8