Pages: [1] 2   Go Down
Author Topic: I think I destroyed my SMD Uno  (Read 2635 times)
0 Members and 1 Guest are viewing this topic.
Global Moderator
Melbourne, Australia
Offline Offline
Brattain Member
*****
Karma: 511
Posts: 19367
Lua rocks!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

I have a SMD Edition Uno. It used to work. It no longer accepts uploads.

  • I tried the loop-back test. Passed.
  • The +5V and +3.3V pins read correctly.
  • The "on" LED lights up.
  • Attempts to program it via ISP fail with "unable to enter programming mode"

The SMD processor chip will be difficult or impossible for me to remove and replace. Any suggestions? Or just throw it into the bin?

I suppose it could be retained as a USB to serial converter.
« Last Edit: November 09, 2012, 06:56:17 pm by Nick Gammon » Logged

http://www.gammon.com.au/electronics

Please post technical questions on the forum - not to me by personal message. Thanks a lot.

Global Moderator
Dallas
Offline Offline
Shannon Member
*****
Karma: 212
Posts: 13085
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset


Were you previously able to program it via ISP?
Logged

Global Moderator
Melbourne, Australia
Offline Offline
Brattain Member
*****
Karma: 511
Posts: 19367
Lua rocks!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

Yes, previously it worked normally.
Logged

http://www.gammon.com.au/electronics

Please post technical questions on the forum - not to me by personal message. Thanks a lot.

Grand Blanc, MI, USA
Offline Offline
Faraday Member
**
Karma: 95
Posts: 4095
CODE is a mass noun and should not be used in the plural or with an indefinite article.
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

Any idea what might have happened to it? I accidentally programmed the RSTDISBL fuse bit recently. That slowed the whole process right down.
Logged

MCP79411/12 RTC ... "One Million Ohms" ATtiny kit ... available at http://www.tindie.com/stores/JChristensen/

Global Moderator
Melbourne, Australia
Offline Offline
Brattain Member
*****
Karma: 511
Posts: 19367
Lua rocks!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

I suspect static electricity. I'm usually careful but maybe I picked it up when I had a charge.
Logged

http://www.gammon.com.au/electronics

Please post technical questions on the forum - not to me by personal message. Thanks a lot.

Global Moderator
Dallas
Offline Offline
Shannon Member
*****
Karma: 212
Posts: 13085
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset


Do you have a high-voltage programmer?  (Maybe the static discharge flipped the RSTDISBL fuse bit?)

What did you last upload to it?  Does that program still run?
Logged

Global Moderator
Melbourne, Australia
Offline Offline
Brattain Member
*****
Karma: 511
Posts: 19367
Lua rocks!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

Do you have a high-voltage programmer?  (Maybe the static discharge flipped the RSTDISBL fuse bit?)

I do, but I don't think I can program it without removing the chip. Or can I? Atmel warn against attempting that with chips on boards, but maybe it would be OK. I suppose it couldn't get any worse.
Logged

http://www.gammon.com.au/electronics

Please post technical questions on the forum - not to me by personal message. Thanks a lot.

Global Moderator
Melbourne, Australia
Offline Offline
Brattain Member
*****
Karma: 511
Posts: 19367
Lua rocks!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

What did you last upload to it?  Does that program still run?

I'm not sure. I do so much ad-hoc testing of stuff for the forum it could be practically anything.
Logged

http://www.gammon.com.au/electronics

Please post technical questions on the forum - not to me by personal message. Thanks a lot.

Fort Lauderdale, FL
Online Online
Faraday Member
**
Karma: 71
Posts: 6144
Baldengineer
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

I'm not sure. I do so much ad-hoc testing of stuff for the forum it could be practically anything.

From compiling stuff for the forum, I have already killed one of my dip based ATmegas.  Maybe you burned up a flash cell (or two)...
Logged

Capacitor Expert By Day, Enginerd by night.  ||  Personal Blog: www.baldengineer.com  || Electronics Tutorials for Beginners:  www.addohms.c

Global Moderator
Dallas
Offline Offline
Shannon Member
*****
Karma: 212
Posts: 13085
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

Do you have a high-voltage programmer?  (Maybe the static discharge flipped the RSTDISBL fuse bit?)

I do, but I don't think I can program it without removing the chip. Or can I?

I forgot about the stuff connected to RESET.  The Atmega16U2 may not survive the 12 volts or the auto-reset circuit may interfere.

Good news!  (and very bad)  You have a new oversized USB-to-TTL-serial converter.
Logged

Global Moderator
Melbourne, Australia
Offline Offline
Brattain Member
*****
Karma: 511
Posts: 19367
Lua rocks!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

Ah well. At about the same time my USBtinyISP stopped working. Not a good day. smiley
Logged

http://www.gammon.com.au/electronics

Please post technical questions on the forum - not to me by personal message. Thanks a lot.

Global Moderator
Boston area, metrowest
Offline Offline
Brattain Member
*****
Karma: 549
Posts: 27434
Author of "Arduino for Teens". Available for Design & Build services. Now with Unlimited Eagle board sizes!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

Nick,
I can replace that chip for you. I have a hot air station, and even a couple of chips I think.
The TQFP chips, not the leadless chips - board looks like it has pads for both?
Logged

Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

Offline Offline
Faraday Member
**
Karma: 30
Posts: 2532
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

what happens when using usb/arduino IDE? 
Logged

Global Moderator
Boston area, metrowest
Offline Offline
Brattain Member
*****
Karma: 549
Posts: 27434
Author of "Arduino for Teens". Available for Design & Build services. Now with Unlimited Eagle board sizes!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

Need to fill out that question some more cjdelphi, you are mixing things together a bit too much.
Logged

Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

Offline Offline
Faraday Member
**
Karma: 30
Posts: 2532
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I'm curious how on earth he killed one, i've tried (by accident) several times lol
Logged

Pages: [1] 2   Go Up
Jump to: