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

[Detectorist#1]

Hi ivconic,
For you, experienced guy in metal detectors, is very strange to write for the problems with RX amplifier for this very simple detector. It is easy to see with oscilloscope if the signals on the output the RX amplifier stage haves some problems. In this project, the author make attempt to move all problems to the software, but the speed and the properties of used microprocessor haven't enough power for producing of really good results. But, the attempts continue so many years....

[ivconic]

I am extremely grateful to you for being willing to teach me, thank you very much!
Could you do me a huge favor and explain how to use an oscilloscope?
Little is clear to me from what you are talking about!?
Thanks in advance!

[latcakir]

Aliexpress is death. I from Turkey and i used aliexpress 10 from years. AliExpress is banned in our country. Now I can't even log into my old account.

[Tanu]

ivconic can you give your coil details?

thank you

[ivconic]

In advised range... 0.38mH/1.7R

[algan]

Very dissatisfied I wrote an official complaint to Aliexpress.
After a few days, I received a reply that "I am not right and that my complaint is rejected"... !??
So much for how Aliexpress protects its customers.
A gang of thieves, liars and robbers! Generally speaking.
There are also positive examples, of course, but they are rarer.
This is a link for a damn thief, remember this seller well and NEVER BUY ANYTHING from that scumbag!

https://www.aliexpress.com/item/1005...%21%211%210%21

I've also bought ICs from Aliexpress that don't work. Nothing can be done, they're cheap and people get scammed, there have been some that work, you can't be sure until you test them.

[ivconic]

Last year I ordered 30 pieces of J113 and they all arrived ... FAKE!
And then I ordered 20 pieces from another seller and they all arrived... OK!
You never know what you're going to win, like the lottery!

[ivconic]

[nejdet]

Last year I ordered 30 pieces of J113 and they all arrived ... FAKE!
And then I ordered 20 pieces from another seller and they all arrived... OK!
You never know what you're going to win, like the lottery!

Can I have a link to a legitimate seller? Thanks!

[ivconic]

I can't be sure, the link is missing from my "order" list, because it was last year.
It looks like Aliexpress doesn't keep those listings longer.
I did not save the seller's name.

[Detectorist#1]

Hi ivconic,
Don't be so quick to thank me in advance for teaching! We haven't agreed on my fee yet. It's important to use our sense of humor!