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

[jladre]

I want to ask, maybe it is possible to get hex at least 600 and more ,than 300 times, it would be fair to all

No! You cannot except you can dig the hex file and delete the counter or you can ask mr.hammud for the counterless hex code.

[ivconic]

Happy New Year folks;

[jladre]

Happy New Year folks;

Thanks ivconic!! You are so kind!! happy new year too...

[6666]

Hi Qiaozhi
In post #9 from your description of how the circuit works ,is the virtual ground for the opamp created by R13/14 and referenced to pin 3 ?

[jladre]

I got problem with this no_counter hex. I cannot load the file. Extreme burner says it is corrupt file(invalid hwx line. In func AVRProgFrm::LoadHexFile)

[Qiaozhi]

Hi Qiaozhi
In post #9 from your description of how the circuit works ,is the virtual ground for the opamp created by R13/14 and referenced to pin 3 ?

The preamp (U2) is used in an inverting configuration with a single-ended supply, and therefore the non-inverting input needs to be biased above 0V.
R13 and R14 form a potential divider to create a virtual ground (or phantom ground) at 8.2V. Hence, the preamp output will also swing around that point (typically +10.2V to -1.8V).

[6666]

The preamp (U2) is used in an inverting configuration with a single-ended supply, and therefore the non-inverting input needs to be biased above 0V.
R13 and R14 form a potential divider to create a virtual ground (or phantom ground) at 8.2V. Hence, the preamp output will also swing around that point (typically +10.2V to -1.8V).

THANK YOU, very usefull much appreciated.

[md4my]

I got problem with this no_counter hex. I cannot load the file. Extreme burner says it is corrupt file(invalid hwx line. In func AVRProgFrm::LoadHexFile)

me too

[Qiaozhi]

I got problem with this no_counter hex. I cannot load the file. Extreme burner says it is corrupt file(invalid hwx line. In func AVRProgFrm::LoadHexFile)

me too

Ignore that file. He's just being irritating because he finds it difficult to follow the rules of the forum.

Open the file in a hex editor and look at the ASCII code, and you'll see why it doesn't work!
I've removed the attachment to save anyone else wasting their time.

[ivconic]

Yes i uploaded bad hex intentionally, sorry it was really bad joke.
Like i said; i don't have moral and ethical right to spread around cracked hex.
It would not be a fair towards it's author.
Yesterday was Friday 13th... really bad day for my nerves.
Also; due recent horrific occurrences in France; i will avoid any kind of debate here, no matter the subject.

[jladre]

I spend too much time for that trash code trying to check why problem exist.. But i was just been a victim of that bad joke!!

[jladre]

http://m.youtube.com/watch?v=2mQVF7v1quw

[greylourie]

Nice result, Josue. Is that your 400µH, 56cm coil ?

[eclipse]

Can you give details on your coil, size, number of turns. Did you use LF357 or a substitute? Anyways congrats on your success it seems to be working very nice.

[jladre]

Nice result, Josue. Is that your 400µH, 56cm coil ?

Yes it is.. But that deep detection is only in the table.