Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: pomprocker on December 19, 2008, 01:52:55 AM

Title: $50 Robot - EZ High Voltage Fuse Reset Device
Post by: pomprocker on December 19, 2008, 01:52:55 AM

Tutorial in the works!

This easy to make breadboard adapter device will factory reset the fuses on your ATmega8/168 if you've ever accidentally disabled reset, isp, or your internal oscillator, etc..

http://www.societyofrobots.com/member_tutorials/node/239 (http://www.societyofrobots.com/member_tutorials/node/239)


I've attached a little teaser photo

Title: Re: $50 Robot - EZ High Voltage Fuse Reset Device
Post by: Trumpkin on December 19, 2008, 09:15:30 AM

This sounds pretty awesome! Can't wait to see the final tutorial.

Title: Re: $50 Robot - EZ High Voltage Fuse Reset Device
Post by: Karlooie on September 06, 2010, 02:31:41 PM

Hi, I accidentally programmed the reset disable fuse, so now my atmega88 is bricked.

I did write on a second atmega88 the hex file HVFuse8.hex (i didn't re-compliled it because i don't have the arduino s/w).
I did put the 1kohm resistor R1 R2 R3 (on the transistor and led) that as i could imagine are more important, but for the moment i didn't put the 1k resistor on the lines because at the moment i dont have enough...

The led is switched on but doesnt switch off when i push the button, and the target is still bricked :(

i did double checked the connection and everything seems correct.
i did connected +5v to vcc and a second try also to avcc (good atmega88)


Any idea? could be because of the missing resistors? I will add them as soon as i get a chance.... but to me it seem strange that the led doesn't turn off at all...

i left the fuses on the good atmega88 set to the default values, correct?

thank you for any reply...

carlo