felezjoo PI(the best pulse induction metal detector that I made until now)

[basellafe]

Jladre what should i do to make felezjoo work with 12 volt without problems

[aroma]

Im agree with you heyran Its rubbish...

[jladre]

Im agree with you heyran Its rubbish...

It is rubbish becausevyou cannot make it work right... The problem is you not the design.

[jladre]

Jladre what should i do to make felezjoo work with 12 volt without problems

Look to my post at post #1245.

[ripsdevala]

felezjoo isn't good as it sound ... only a simple pi md with poor stability in real soil...

Im agree with you heyran Its rubbish...

Felezjoo is not all terrain detector, maybe the author is live without volcanic area which is perfect for fejo, in my place with full vulcanic area is imposible, except on the beach (with no iron sand) and clay ground that i already test.

[seadoggy]

Felezjoo is not all terrain detector, maybe the author is live without volcanic area which is perfect for fejo, in my place with full vulcanic area is imposible, except on the beach (with no iron sand) and clay ground that i already test.

Is it good at normal terrain??

[mohammadreza1100]

Hello qiaozhi and ivonic.please help me.if i do not shield the felezjoo loop what advantage i will lost?
Thank u.

[Toros]

You will not lose anything

[mohammadreza1100]

Thank u toros.i found the problem.after the first sense it countinued even i take far the metal target.and when i touch the cable junction to the board woth my finger it goes off.i use coaxial cable without foil.what is the problem?
Thanku again toros

[Toros]

Am I to understand that with finger you connected the drain of IRF840 to grund or any other element of the scheme. I do not know what you've done but it is possible to be burned IRF 840 or even CPU (ATMega).

[mohammadreza1100]

Thank u toros

[basellafe]

i want to ask abaut coil what is best spider coil or mono and wire shuold it be litz becuose letz have more ohm

[chafik]

hey PIGEON this is a link you should use for Usbasp driver http://andybrown.me.uk/2010/11/14/us...bit-windows-7/
for more description you can go to avrfreaks forum the some thing can be done for mk2 programmer from atmel
the atmel driver had no signature needed by windows to be accepted in the link you will see a full description great work from Andy Brown
you can get the file here
https://drive.google.com/uc?export=d...lBpN0ViNl9LU28

[ivconic]

Little bit of trimming and small coil can work nice!
Debug numbers are close to good:

[ivconic]

It is operated on 12V not on 18V.
Trick is to replace R19 with 13k resistor and that's how code in Atmega is fooled to accept 12V supply without any problems.