Help to design a PCB for my PI design!

[1843]

Here's a programmer you need... including sch, PCB layout, Ponyprog fuses...

AVR-ISP.zip

[Qiaozhi]

Have a look at the power supply on the Hammerhead II ->
http://www.geotech1.com/forums/showthread.php?t=14940

It is very similar to your previous power supply. Perhaps it will have the same noise problems.

[1843]

Have a look at the power supply on the Hammerhead II ->
http://www.geotech1.com/forums/showthread.php?t=14940

It is very similar to your previous power supply. Perhaps it will have the same noise problems.

It doesn't have the noise problem, because it's synced.

[Qiaozhi]

It doesn't have the noise problem, because it's synced.

OK - I note that you've already tried that as a solution, but the ATMega8 keeps stopping due to the voltage drop.

[1843]

OK - I note that you've already tried that as a solution, but the ATMega8 keeps stopping due to the voltage drop.

I'm modifying the schematic at the moment...
By using a P-MOSFET and changing the 7660 task, all the noise problems will be solved.

Kind regards,
1843

[1843]

The main changes I'v done:



Two opamps are used, so one has a lot of choice... AD797, AD8055, etc etc
As you see the 7660 is synced.

Any comments ?

[Qiaozhi]

Here's the main changes I'v done on it:


Two opamps are used, so one has a lot of choice... AD797, AD8055, etc etc
As you see the 7660 is synced.

Any comment ?

The power supply looks much improved.

[1843]

Grounds are separated...

[1843]

And the other changes:

[pure gold]

update

new pcb drawing and discriminative hex

[pure gold]

thank you!

1843 & Qiaozhi
excellent

[zenit52]

Hi 1843,

Please help us,
Your MD produce pulses with atmega8 timers or another ways?
what is your MD pulses frequency and pulse width ????
I am waiting for your answer...
with best regards.
zenit52

[okantex]

Hi All ,

Carl who banned 1843 , he has problem with entering to geotech.

"
It gives me "Sorry. The administrator has banned your IP address. To contact the administrator click here"

???
"
I dont think you did something like that but I think someone hacked his codes.

can you solve the problem.

regards
Okan

[Aziz]

Hi,

Hi All ,

Carl who banned 1843 , he has problem with entering to geotech.

"
It gives me "Sorry. The administrator has banned your IP address. To contact the administrator click here"

???
"
I dont think you did something like that but I think someone hacked his codes.

can you solve the problem.

regards
Okan

I had the same problem yesterday. I have deleted all the cookies from the browser. And it seems running now.

Aziz

[Qiaozhi]

Hi All ,

Carl who banned 1843 , he has problem with entering to geotech.

"
It gives me "Sorry. The administrator has banned your IP address. To contact the administrator click here"

???
"
I dont think you did something like that but I think someone hacked his codes.

can you solve the problem.

regards
Okan

1843 was not banned. Carl was adding a spammer's address to the blocked list, but he accidentally added a wild card in the wrong place ... and banned everybody.

You obviously missed Carl's humble apology that was present at the top of the forums yesterday. It has since been removed.

The forums are now back in operation.