3D Robotics Comment by Chris Anderson on April 13, 2009 at 7:08am

Bummer! It's always safest the power the board from an ESC. All of those connectors are polarized so it's almost impossible to fry the board that way. But I'm surprised that using an AVR programmer without the board being powered fried a chip. It shouldn't have.

Comment by Jonas on April 13, 2009 at 7:18am

I have a USBtinyISP and I left the jumper on. When the jumper is on the USBtinyISP will give power and so the led go on on the ardupilot board. I think sometinh went worg on the end of the programming. I was getting some strange setting from the fuses tab and then it was gone.

Moderator Comment by Brian on April 13, 2009 at 12:41pm

I want to try something and need a working board with a dead attiny45...

Comment by Reto on April 13, 2009 at 2:55pm

Sorry Brian, I had a board with a dead ATtiny45, but I already replaced it with a new ATtiny45... wrong one, but new. And it works! Now I call this board the Buguino!

Moderator Comment by Brian on April 13, 2009 at 4:33pm

That's funny and along the lines of what I want to try. If Jonas doesn't want his anymore I want a second chance at fixing one knowing what I learned while attempting to fix my last one, which is totally and utterly
D E A D !!! (expecially after I tried to fix :)

Jonas?

Comment by Reto on April 13, 2009 at 11:48pm

Brian, what went so wrong when you tried to fix it? Do you have a pic showing the result? Finally, it's a funeral thread where all of us could post some electronic failures or mishap.

Comment by Jonas on April 14, 2009 at 3:26am

Brian you dit a nice job with your ATtiny45 (big). I dont know if that is still possible for me. I may have damaged the PCB while trying to lose the old one. Yes I will send some Picture's later. And I will go to the store to buy some electronic's that I also need but I dont know if they have a ATtiny on the shelf.

Comment by Reto on April 14, 2009 at 6:31am

To get rid of an ATtiny45, Chris gave me the perfect tip: cut the uC legs with small cutting pliers and then unsolder each leg remain individually. In my case I did not have such small pliers, so I carefully cut the legs near the uC body with an ActoKnife. But my work would have been better if I had waited for a right sized ATtiny45 replacement!

Comment by Jonas on April 14, 2009 at 12:42pm

I have removed the ATtiny45 (not whitout some damage). Now I have 2 questions.
1: in the left circle the top of the black (condensator) is that connected to the tirth leg?
2: in the other circle looks like the first leg is connected to A8 or is that just mess I made?

Comment by Reto on April 14, 2009 at 4:45pm

Check out the ArduPilot schematics to make it clear. There's also a pic of the board connection lines somewhere, but I can't find it right now.

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