Comments on: Arduino MEGA auto-reset fix

By: Jason

Jason — Sat, 29 Oct 2011 21:31:19 +0000

I had the same problem,
but im used to seeing USB glitches.
when i looked into this problem i discovered that the device wasnt selected in the Adruino sketch ide and the sellected com port had disapeared.
i remounted the usb lead – the port reappeared
and sellected the mega board again.
program compiled no problems

By: Lee

Lee — Fri, 26 Aug 2011 06:33:10 +0000

sadly it does not work for me. Will try to use external programmer, thanks for the help!

Need the Luck there!thanks!=)

By: Arvydas

Arvydas — Wed, 24 Aug 2011 09:54:52 +0000

Hi Lee,

I think these are the spots where you have to solder the capacitor:

http://www.arvydas.co.uk/wp-content/uploads/2011/08/ArduinoMega2650Front-reset.jpg

Good luck! :)

By: Lee

Lee — Wed, 24 Aug 2011 03:29:17 +0000

Hi,

I’m using Arduino Mega 2560 and have the same uploading problem.

Hope you can provide solution on where to solder the suggested capacitor.

Thanks in advance for the help!searched really long for this problem>.<

Regards,
Lee

By: Arvydas

Arvydas — Fri, 29 Oct 2010 07:51:20 +0000

I don’t think this issue applies to your Arduino Mini Pro, because it does not have an FTDI chip and you need to have a programmer in order to program it or just use another Arduino to program the Mini Pro.

By: kitox

kitox — Fri, 29 Oct 2010 06:23:54 +0000

Hello

I have the same prob on my arduino pro mini 5v 328, can you tell me where can i do that on it plz ?

By: Arvydas

Arvydas — Mon, 30 Aug 2010 19:19:25 +0000

Happy it worked for you guys :)

By: Ian Molesworth

Ian Molesworth — Mon, 30 Aug 2010 10:57:27 +0000

You are THE MAN!!!

Google comes up with hundreds of hits on this problem but this is the only solution that fixes it!

If you are ever in East Sussex I’ll buy you a pint!

By: Rambotics electronics

Rambotics electronics — Sun, 27 Jun 2010 11:50:38 +0000

Hello!

It works!!!!

You saved my day man!
I have a complete circuit on a stripboard with Mega, everything is tangled up. And I cannot upload my sketch. Uh..shi** it thougt. I have to do it again – i thought i burned or short circuited the Mega somehow.

And then I followed your advice and soldered a 100uF cap over. Perfect!
I uploaded on the first try…

Thanx again

By: Arvydas

Arvydas — Wed, 03 Mar 2010 13:51:33 +0000

I’m not 100% sure whether this is the case, because I couldn’t find the schematics of the board for Roboduino MEGA, but it seems similar to the Arduino MEGA.

http://www.arvydas.co.uk/wp-content/uploads/2010/03/Roboduino-mega-reset-fix.jpg

In the image above I marked two rectangles showing where you should solder the 100nF cap on top of the faulty one.

LMK if this helps :)