Device just 'stopped working'?

[Morgan 'ARR!' Allen]

I'm still investigating what is going on but one of my devices, seemingly without provocation has become totally unresponsive.

It appears it happened after a failed upload. After which the board no longer registered itself as a serial device.

I made an attempt to reflash the Arduino bootloader without success but that was before reading the "Updates and Design Files" post

mentioning the need for a pull-up resister. That will be my next attempt but curious if anyone else has seen the board fail in a similar

manner and if so was it recovered?

Thanks, Morgan.

[Morgan 'ARR!' Allen]

I've made some progress on this. At this point I can program the Leonardo bootloader from the command line but I'm getting constant fuse bit verification errors (why the Arduino env won't burn the bootloader at all).

Here's the output from trying to burn the bootloader.

avrdude: Version 5.11.1, compiled on Oct 30 2011 at 10:41:10

         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/

         Copyright (c) 2007-2009 Joerg Wunsch

         System wide configuration file is "/usr/share/arduino/hardware/tools/avrdude.conf"

         User configuration file is "/home/morgan/.avrduderc"

         User configuration file does not exist or is not a regular file, skipping

         Using Port                    : usb

         Using Programmer              : usbasp

avrdude: seen device from vendor ->www.fischl.de<-

avrdude: seen product ->USBasp<-

         AVR Part                      : ATmega32U4

         Chip Erase delay              : 9000 us

         PAGEL                         : PD7

         BS2                           : PA0

         RESET disposition             : dedicated

         RETRY pulse                   : SCK

         serial program mode           : yes

         parallel program mode         : yes

         Timeout                       : 200

         StabDelay                     : 100

         CmdexeDelay                   : 25

         SyncLoops                     : 32

         ByteDelay                     : 0

         PollIndex                     : 3

         PollValue                     : 0x53

         Memory Detail                 :

                                  Block Poll               Page                       Polled

           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack

           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------

           eeprom        65    10     8    0 no       1024    8      0  9000  9000 0x00 0x00

                                  Block Poll               Page                       Polled

           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack

           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------

           flash         65     6   128    0 yes     32768  128    256  4500  4500 0x00 0x00

                                  Block Poll               Page                       Polled

           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack

           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------

           lfuse          0     0     0    0 no          1    0      0  9000  9000 0x00 0x00

                                  Block Poll               Page                       Polled

           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack

           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------

           hfuse          0     0     0    0 no          1    0      0  9000  9000 0x00 0x00

                                  Block Poll               Page                       Polled

           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack

           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------

           efuse          0     0     0    0 no          1    0      0  9000  9000 0x00 0x00

                                  Block Poll               Page                       Polled

           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack

           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------

           lock           0     0     0    0 no          1    0      0  9000  9000 0x00 0x00

                                  Block Poll               Page                       Polled

           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack

           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------

           calibration    0     0     0    0 no          1    0      0     0     0 0x00 0x00

                                  Block Poll               Page                       Polled

           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack

           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------

           signature      0     0     0    0 no          3    0      0     0     0 0x00 0x00

         Programmer Type : usbasp

         Description     : USBasp, http://www.fischl.de/usbasp/

avrdude: auto set sck period (because given equals null)

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.00s

avrdude: Device signature = 0x1e9587

avrdude: erasing chip

avrdude: auto set sck period (because given equals null)

avrdude: reading input file "0x3F"

avrdude: writing lock (1 bytes):

Writing | ################################################## | 100% 0.00s

avrdude: 1 bytes of lock written

avrdude: verifying lock memory against 0x3F:

avrdude: load data lock data from input file 0x3F:

avrdude: input file 0x3F contains 1 bytes

avrdude: reading on-chip lock data:

Reading | ################################################## | 100% 0.00s

avrdude: verifying ...

avrdude: 1 bytes of lock verified

avrdude: reading input file "0xcb"

avrdude: writing efuse (1 bytes):

Writing |  ***failed;  

################################################## | 100% 0.06s

avrdude: 1 bytes of efuse written

avrdude: verifying efuse memory against 0xcb:

avrdude: load data efuse data from input file 0xcb:

avrdude: input file 0xcb contains 1 bytes

avrdude: reading on-chip efuse data:

Reading | ################################################## | 100% 0.00s

avrdude: verifying ...

avrdude: verification error, first mismatch at byte 0x0000

         0xcb != 0xff

avrdude: verification error; content mismatch

avrdude done.  Thank you.

[Morgan 'ARR!' Allen]

I had forgotten to mention this in my first post but something curious I'd notice early on was that the 3.3v out was also dead. As I turned more towards probing hardware looking for problems I finally found it. Blown fuse. Or at least a damaged one. Anywho... I stuck a penny in the socket* now its working again and I'm back on track for my project.

And for the curious I'm building bicycle sprint timing gates. Using dollar store laser pointers, photo diodes and some transistors. The plan is for a master/slave setup. The slave will be battery powered at the finish line. The master will be connected to my laptop. When a race is started the master will enable its laser. Once tripped the timer will start and it will signal the slave to enable its own laser. When the slave laser is tripped it will signal the master the race is over and return to standby mode (laser off).

I think I have everything I need so hopefully I will get it done in a week or two. I'll post again once I've started my build log.

* by penny in the socket I mean I just bridged F1 with a bit of wire.

On Wednesday, June 5, 2013 11:05:27 AM UTC-7, Morgan 'ARR!' Allen wrote: