Pinpointer with discrimination "Cat-FM" on ATMega328P

[void118]

Thanks for the extra coil data and results Void188. Regards, Marty.

You are welcome). When I'll found sponsors for this project I will order cheap pinpointer frome aliexpress and will make PCB replacement for him based on "Cat-FM".
You can fell free to ask me If you will have some questions.

[void118]

Few minutes ago I've ordered vibro motor module fro aliexpress, so when I'll recive It, we will make few experiments, but I suppose that vibration on the board Is not good Idea for this project, I mean whole system stability and 80mA Is very big load for portable devices, but anyway, let's see.

Link to Vibro motor board:
https://s.click.aliexpress.com/e/_9vS9pR

[MartyJ1963]

Hiya Void118, Is the 2.2UF capacitor an electrolytic capacitor or a polyester capacitor please? I have successfully programmed my Atmega328P. I have used an Atmega328P-PU,,,Is that ok? Thanks, Marty.

[void118]

Hiya Void118, Is the 2.2UF capacitor an electrolytic capacitor or a polyester capacitor please? I have successfully programmed my Atmega328P. I have used an Atmega328P-PU,,,Is that ok? Thanks, Marty.

Hi, I used 2.2uF/16v electrolytic one, Atmega328P-PU Is OK, but make sure that you have 16mHz crystall on board...

[MartyJ1963]

Thanks Void118. I'm trying to make a smaller pcb because I don't have any copper clad board that is 100mm long. Please could you check my pcb for me when I have redrawn it? Thanks again, Marty.

[void118]

Hiya Void118, Is the 2.2UF capacitor an electrolytic capacitor or a polyester capacitor

By the way, I think you can use ceramic one....

[void118]

Thanks Void118. I'm trying to make a smaller pcb because I don't have any copper clad board that is 100mm long. Please could you check my pcb for me when I have redrawn it? Thanks again, Marty.

Marty, I am sorry, I didn't understand you, sorry, English Isn't my native language), could you please explain me what Is It mean "copper clad board"?, yes, I can check your PCB but I'm working In "EasyEDA" environment, which one environment are you using?

[useus]

By the way, I think you can use ceramic one....

the best should be tantalum, when I have the pcb ready, I'll do a test

[void118]

the best should be tantalum, when I have the pcb ready, I'll do a test

We are talking about blocking capacitor before amplifier, I think we can use anyone because his mission Is prevent generator from S8050 base operating point constant current.

[useus]

We are talking about blocking capacitor before amplifier, I think we can use anyone because his mission Is prevent generator from S8050 base operating point constant current.

[ATTACH]55174[/ATTACH]

exactly, in theory the tantalum being low esr should make the circuit more stable from any jolts

[void118]

exactly, in theory the tantalum being low esr should make the circuit more stable from any jolts

May be you right friend, but I don't have such capacitors In my components, I think It's worth trying.

But I'm sure that coil capacitor, I mean 33nF must be thermal stable, I can advise PolyPhenylene Sulfide ones.

[MartyJ1963]

Thanks guys. Shall I try the 2.2uf Tantalum then instead of the electrolytic? Regards, Marty.

[void118]

Thanks guys. Shall I try the 2.2uf Tantalum then instead of the electrolytic? Regards, Marty.

I suppose It won't be worse for sure)

[useus]

Thanks guys. Shall I try the 2.2uf Tantalum then instead of the electrolytic? Regards, Marty.

if you have it, you can try to see the differences. be careful not to reverse the polarity

[MartyJ1963]

Thanks guys. @Void188, I am re-drawing my pcb in Sprint layout because I am not familiar with EasyEDA. Regards, Marty.