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

[pigeon]

...

thank you friend

p.

[samii]

Hello
24. leg of atmega connected over 20k to OUT leg of 7812 on İvconik new PCB , But On old pcb and schematic this connection going İN leg of 7812 .
Which one is correct? Maybe both are correct?

[Qiaozhi]

Hello
24. leg of atmega connected over 20k to OUT leg of 7812 on İvconik new PCB , But On old pcb and schematic this connection going İN leg of 7812 .
Which one is correct? Maybe both are correct?

R19 is actually 22k, and it should go to the input of U4 (7812). The signal at pin 24 of U1 (ATmega328P) is used to monitor the input voltage from the battery.

[jladre]

...

Hi ivconic! What software can view this format?

[karim1980]

It means possible to change the current value by 20k Until the device runs on 12v ?

[jladre]

It means possible to change the current value by 20k Until the device runs on 12v ?

To run it in 12 volts you must change the value of R19.

[chevesne]

Hi ivconic! What software can view this format?

Sprint Layout

[Arionas]

Thanxs Mister Ivconic.........

[pigeon]

hi friends

thanks IVONIC and ARIONAS

i search format pdf version

sorry I apologize

[Arionas]

Download Documents (FelJPi_IC_mk)
Install Sprint Layout for Pc...........
Open file
and Go to Print

[karim1980]

To run it in 12 volts you must change the value of R19.

Exactly how much value because I have tried to do this to make the value of r19 to 18k And i change U4 (7812) to 7809 But were damaged controller and the screen
sorry the my bad english

[samii]

if you download and install bullzip pdf printer you can get pdf version
I attached pdf versions.
pcb.rar

[pigeon]

if you download and install bullzip pdf printer you can get pdf version
I attached pdf versions.
[ATTACH]35491[/ATTACH]

thank you friend

[ivconic]

R19 is actually 22k, and it should go to the input of U4 (7812). The signal at pin 24 of U1 (ATmega328P) is used to monitor the input voltage from the battery.

Correct!
I made there mistake and now it is monitoring and indicating wrong value.
It should be corrected.
Trimer is there to trim fine the input voltage to mcu... though not necessary .
Well observed!

[ivconic]

I also forgot to correct few more mistakes too. Sorry.
Here it is, completely corrected file;