Pinpointer with discrimination "Cat-FM" on ATMega328P

[useus]

Dear friends, here Is link to world electronics distributer, you will find there anything you want, If you want buy an quality parts of course.

https://lcsc.com

I'm sorry, I tried again, it was a damn false contact on the breadboard that didn't make the buzzer work well for me.
he made a joke on me because the transistor that I had changed was exactly in the same place, which is why I had changed it before. sorry again

[useus]

Hi guys. Have I drawn this correctly please? Thanks, Marty.

100k above 2.2uf must be disconnected from 2.2uf
atmega328 pin 20 to 5v
atmega328 pin 22 to gnd

the rest looks ok

[void118]

"Cat-FM" New Revision

Dear friends,

here Is the new revision of my project, In attachment you will find new firmware and schematic.

1. I removed "Reset" button from PC6 and add "Set" button to PD2.

2. From now "Set button" will recalibrate pinpointer without restarting MCU.

3. If you are using Arduino board, old "Reset" button will work too but If you will add "Set" button you will get the opportunity
to recalibrate pinpointer without restarting MCU.

4. I dont think to redesign schematic In the nearest feature anymore.

5. Very soon the new "Set" button will obtain more functionality like switching to power save mode, sensitivity setting and
more.

6. My project Is placed on few resources, but this forum got this update first

https://drive.google.com/file/d/14KK...ew?usp=sharing

[MartyJ1963]

Thanks Useus. I re-arranged a few things and corrected it. Is it ok now please? Thanks again, Marty.

[MartyJ1963]

Is PD2 pin 4 of the Atmega328p? Is this here I place the Reset button to? Thanks, Marty.

[MartyJ1963]

@Void118, Thanks for the project. Really kind of you to offer it here on Geotech. Much appreciated. Regards, Marty.

[MartyJ1963]

What is the best frequency to tune the coil to please? Thanks, Marty.

[6666]

Void118, is the fuse information inside the hex file or do you have to program the fuses as well ?

Also just to be correct if the 2.2uF cap is an a electrolytic you should show the + symbol on your schematic so people can make the project correctly,Thanks.

[void118]

Void118, is the fuse information inside the hex file or do you have to program the fuses as well ?

Also just to be correct if the 2.2uF cap is an a electrolytic you should show the + symbol on your schematic so people can make the project correctly,Thanks.

Thank you, you should program fuses separetly, fuse settings you can find In the schematic page. 2.2uF capacitor may be electrolytic, ceramic, tatntal or polyester - on your choice.

[void118]

What is the best frequency to tune the coil to please? Thanks, Marty.

20-25 kHz will work fine, you can tune this by selecting the coil capacitor(33nF) bigger capacitor->lower frequency, smaller capacitor -> higher frequency.

[void118]

Is PD2 pin 4 of the Atmega328p? Is this here I place the Reset button to? Thanks, Marty.

Yes It Is. Look at the picture please:

Look at the new schematic carefully please, you don't need to place It anymore.

[void118]

Thanks Useus. I re-arranged a few things and corrected it. Is it ok now please? Thanks again, Marty.

Colleagues, help Marty please, I don't have enough time for everything. Thank you

[void118]

Friends, I've added subtitles to my videov and now you can translate them In the settings.

[useus]

Thanks Useus. I re-arranged a few things and corrected it. Is it ok now please? Thanks again, Marty.

this is my finished pcb and revised to version 1.2 loaded by void118, i used ground fill, then you will see the seeds where gnd are connected, you can follow the tracks and compare with your pcb
9v and btn seeds are not seen but are connected to gnd

[useus]

Dear friends,

here Is the new revision of my project, In attachment you will find new firmware and schematic.

1. I removed "Reset" button from PC6 and add "Set" button to PD2.

2. From now "Set button" will recalibrate pinpointer without restarting MCU.

3. If you are using Arduino board, old "Reset" button will work too but If you will add "Set" button you will get the opportunity
to recalibrate pinpointer without restarting MCU.

4. I dont think to redesign schematic In the nearest feature anymore.

5. Very soon the new "Set" button will obtain more functionality like switching to power save mode, sensitivity setting and
more.

6. My project Is placed on few resources, but this forum got this update first

https://drive.google.com/file/d/14KK...ew?usp=sharing

thank you! i would say we are ready to build pcb!