BRN Pi-1 DİJİTAL Pİ

[bernte_one]

hello mohandes

i think the only think ist to add the unused second stage of the lm 358 to get more gain

i will try These changes on my board and draw a newer Revision of the pcb if the changes are tested

i hope you can wait one or two weeks

coil specs seems to be the best with surf pi or Chance pi coil monoloop around 300µH or a basket coil type

[bernte_one]

ok
i made a decision, would be easier and a little faster if some more work on this project

so i post my layout which is tested and proofed as working
for further improovement which are named from marti some posting ago

so anyone here feel free to use this basic layout for own use, modification and improovements but be fair enough to post the infos here and lets share each other

the layout is not perfect and i left much space on pcb free, so i hope we can do some more changes without changing the format much

https://www.youtube.com/watch?v=Xo6wG35Y0u4

for geotech.zip

[mohandes]

ok
i made a decision, would be easier and a little faster if some more work on this project

so i post my layout which is tested and proofed as working
for further improovement which are named from marti some posting ago

so anyone here feel free to use this basic layout for own use, modification and improovements but be fair enough to post the infos here and lets share each other

the layout is not perfect and i left much space on pcb free, so i hope we can do some more changes without changing the format much

https://www.youtube.com/watch?v=Xo6wG35Y0u4

[ATTACH]32349[/ATTACH]

very good.i wait for last version.and can you add discrimination on it?

[6666]

Bernte_one good work
could you please confirm that the information that is displayed on the LCD is only the audio volume and sensitivity level ?

[6666]

Just for information Post #46 has the correct dual opamp circuit.

[bernte_one]

yes it was Audio Level, sens Level, battery voltage, on top line
the lower line is for Signal bargraph

and they have a function too (so no fake)
before i Change my layout i will test the second opamp stage on an additional pickup board

[6666]

yes it was Audio Level, sens Level, battery voltage, on top line
the lower line is for Signal bargraph

and they have a function too (so no fake)
before i Change my layout i will test the second opamp stage on an additional pickup board

Thanks .

[cko47]

Hm. My variant is better. Have adjusting frequency, pulse width, main delay, sample width, sensitivity. Used pic16f88. Is possible add other function for adjusting http://www.geotech1.com/forums/showt...o&goto=newpost

[bernte_one]

hello cko47
can you post your project please? new thread?

[cko47]

Hello bernte_o! Earlier I wrote, that my project was stolen. But this message was removed from a forum. I do not see it. The information from my project was used by a department of the ministry of internal affairs. I need some time for search of this documentation on others my computers. But I looked on a forum and I see that the part it was kept. See all my correspondence. From this time passed more than two years. I. Wus

[Davor]

Hi cko47,
if you are seeking your attached files in this forum, the easy way is to start a new reply, go advanced, scroll down, press "Manage Attachments" button, and there you have all your attachments visible.
When you move a mouse pointer to the upper right corner of the attachment icon, you'll see a small question mark appearing, and you click on it. The Asset Usage dialogue appears with a link to the post in forum where your attachment is.

[Qiaozhi]

Hello bernte_o! Earlier I wrote, that my project was stolen. But this message was removed from a forum. I do not see it. The information from my project was used by a department of the ministry of internal affairs. I need some time for search of this documentation on others my computers. But I looked on a forum and I see that the part it was kept. See all my correspondence. From this time passed more than two years. I. Wus

You can click on your name at the top left of your post, and select "View Forum Posts". You have made 66 posts in the forum so far, so it shouldn't take too long to find the correct one.

[greylourie]

Hello bernte_o! Earlier I wrote, that my project was stolen. But this message was removed from a forum. I do not see it. The information from my project was used by a department of the ministry of internal affairs. I need some time for search of this documentation on others my computers. But I looked on a forum and I see that the part it was kept. See all my correspondence. From this time passed more than two years. I. Wus

Your comment about your work was in other thread, see here : http://www.geotech1.com/forums/showt...887#post201887

So no one has removed it.

[bernte_one]

away from cko47 Project

can someone look at the schematic and say me what voltage should be corretly adjusted in theory with trimpot of the opamp

most of the analog Project i have done the Offset voltage was in real another than in theory often depends on coil and supply voltage

but how is it here? druing this Weekend i will made an addon board to integrate the second stage of the opamp and see how this works

[6666]

The hex and layout files for the ck047 project are at
http://www.geotech1.com/forums/showt...406#post172406