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

[eclipse]

Folks, I have enough boards so you don't need to reserve or anything like that, so no worries, especially when it's not tested yet, so I don't know if it's error free.
I will publish the result when I'm ready.

[nick holas]

hi all
could someone help me to burn this atmega328p-pu with AVRDUDESS?
in the archive there s photo with LO:0XF7 HI:0XD1 EX:0XFC, but what "fuses bits" i have to check in that fuse selector program( ex:ckdiv8,cksel2 etc.....)
i don t know if you see what i want to say ???( i m noob in AVR!!!)
i m just waiting for LF357 and 2x4700µf and it 'll be finish!!!!
many thanks

[eclipse]

I'm not familiar with this soft but I think there are only 3 fuses needed to configured - Low/High/Extended (look at the photo in the zip called fuse).

[eclipse]

I had the chance to test FelezJoo PI today, It's not polished don't mind the ugly cables there it was quick and dirty soldering as I was impatient to see if the board will become a BBQ but at least nothing's fried. No keybaord, no speaker and no coil at this time ( the device knows there's not coil connected) and shows warning.
I will test it with a 38cm coil around 380-400mH / 1 Ohm in a few days when I get the time.
I've connected 12V battery directly (bridged the 7812 IN/OUT) for now, it would be nice if the device has an option to set lowest battery voltage mark.
I've ordered very low dropout regulator in order to work with 4x3.7V but If I don't get the option to set low voltage warning it will suck.

[Qiaozhi]

I had the chance to test FelezJoo PI today, It's not polished don't mind the ugly cables there it was quick and dirty soldering as I was impatient to see if the board will become a BBQ but at least nothing's fried. No keybaord, no speaker and no coil at this time ( the device knows there's not coil connected) and shows warning.
I will test it with a 38cm coil around 380-400mH / 1 Ohm in a few days when I get the time.
I've connected 12V battery directly (bridged the 7812 IN/OUT) for now, it would be nice if the device has an option to set lowest battery voltage mark.
I've ordered very low dropout regulator in order to work with 4x3.7V but If I don't get the option to set low voltage warning it will suck.

Well done. That's good progress.

[turboaleks]

Hello eclipse, nice to have another forum member finished this detector. I use an acid lead battery and increased R20. Now the detector shows a higher voltage. This is not elegant but works, hehe.

[pigeon]

Hi
It is a discrimination detector

[Qiaozhi]

Hi
It is a discrimination detector

Read post #62.

[turboaleks]

Here are some pics:

[nick holas]

Hi all
Thanks eclipse for your help,just waiting again and again for lf357 and 4700Uf caps!!!!!

[andon80]

Does anyone have information where I can buy felezjoo pbc friends

[mohandes]

this pi is good for make?

[Qiaozhi]

Does anyone have information where I can buy felezjoo pbc friends

Ask eclipse. He had some PCBs made.

[eclipse]

Made some tests today with regular wound coil (PVC insulated cable, multi strand, 0.8mm) - 38cm diameter and it doesn't seem that sensitive (no more than 1 meter sensitivity).
I'm going to try 1x1 coil to see how it performs hope it does better than that.

[michael]

Hi everybody. I see some people are in doubt about this MD abilities.
Be sure it really worthies to be made. I’m one of the first ones who made it.
It is very stable and powerful.
It can detect with an appropriate 23 Cm coil up to 120 Cm. and with 1m x 1m coil 4 meters or more.
Mr. Hamid is really a genius it’s my honor that he is my compatriot who presented this MD free of any charge to his compatriots for solving one of their most important problems.
Wish Best things for you.