Would like help figuring out what I've done to my Uno R3
hello!
i've had uno r3 couple of weeks. going fine , think accidentally sent 12v wrong pin(s).
so i've spent few hours trying figure out part broken , whether board salvageable. it's pretty clear me need beneficent forum.
btw, first post
some data points:
i can't burn bootloader. i've tried "arduino uno" , "arduino ng or older w/atmega8" both give same result:
[font=courier]/users/jeremy/downloads/arduino.app/contents/resources/java/hardware/tools/avr/bin/avrdude -c/users/jeremy/downloads/arduino.app/contents/resources/java/hardware/tools/avr/etc/avrdude.conf -v -v -v -v -patmega8 -cstk500v1 -p/dev/tty.usbmodemfa131 -e -ulock:w:0x3f:m -uhfuse:w:0xca:m -ulfuse:w:0xdf:m
avrdude: version 5.11, compiled on sep 2 2011 @ 18:52:52
copyright (c) 2000-2005 brian dean, http://www.bdmicro.com/
copyright (c) 2007-2009 joerg wunsch
system wide configuration file "/users/jeremy/downloads/arduino.app/contents/resources/java/hardware/tools/avr/etc/avrdude.conf"
user configuration file "/users/jeremy/.avrduderc"
user configuration file not exist or not regular file, skipping
using port : /dev/tty.usbmodemfa131
using programmer : stk500v1
avrdude: send: 0 [30] [20]
avrdude: send: 0 [30] [20]
avrdude: send: 0 [30] [20]
avrdude: ser_recv(): programmer not responding
avrdude: stk500_recv(): programmer not responding
avrdude done. thank you.[/font]
"/dev/tty.usbmodemfa131" correct device , can see rx light flash. tx light doesn't flash.
i'm out of ideas. except getting board!
any thoughts?
cheers,
jeremy
by way, i'm in sydney australia so, while i'm pretty motivated fix uno (or @ least diagnose it), may not reply right away if it's middle of night here
i've had uno r3 couple of weeks. going fine , think accidentally sent 12v wrong pin(s).
so i've spent few hours trying figure out part broken , whether board salvageable. it's pretty clear me need beneficent forum.
btw, first post

some data points:
- when plug board in mac, usb device appears
- the green "on" led comes on. orange l1 led comes on (the 1 on digital out 13).
- the reset button has no effect
- the orange led doesn't behave way used to. on power-on stays steady rather flashing little while before remaining steady.
- i can't upload sketches. get: "avrdude: stk500_recv(): programmer not responding"
- i can use serial monitor send text uno , rx light flashes tx light doesn't flash
- i tried loopback test connecting pins 0 , 1 (tx & rx) , reset , gnd , powering on uno. text comes me expected. looks 16u2 working
- just sure, put 16u2 dfu mode , reflashed dfu-programmer (which had patch support atmega16u2) , went fine
- on chance it's atmega328p that's not working, bought replacement. couldn't atmega328p right away (i'll have order 1 online) did atmega8 inserted (the right way around).
i can't burn bootloader. i've tried "arduino uno" , "arduino ng or older w/atmega8" both give same result:
[font=courier]/users/jeremy/downloads/arduino.app/contents/resources/java/hardware/tools/avr/bin/avrdude -c/users/jeremy/downloads/arduino.app/contents/resources/java/hardware/tools/avr/etc/avrdude.conf -v -v -v -v -patmega8 -cstk500v1 -p/dev/tty.usbmodemfa131 -e -ulock:w:0x3f:m -uhfuse:w:0xca:m -ulfuse:w:0xdf:m
avrdude: version 5.11, compiled on sep 2 2011 @ 18:52:52
copyright (c) 2000-2005 brian dean, http://www.bdmicro.com/
copyright (c) 2007-2009 joerg wunsch
system wide configuration file "/users/jeremy/downloads/arduino.app/contents/resources/java/hardware/tools/avr/etc/avrdude.conf"
user configuration file "/users/jeremy/.avrduderc"
user configuration file not exist or not regular file, skipping
using port : /dev/tty.usbmodemfa131
using programmer : stk500v1
avrdude: send: 0 [30] [20]
avrdude: send: 0 [30] [20]
avrdude: send: 0 [30] [20]
avrdude: ser_recv(): programmer not responding
avrdude: stk500_recv(): programmer not responding
avrdude done. thank you.[/font]
"/dev/tty.usbmodemfa131" correct device , can see rx light flash. tx light doesn't flash.
i'm out of ideas. except getting board!
any thoughts?
cheers,
jeremy
by way, i'm in sydney australia so, while i'm pretty motivated fix uno (or @ least diagnose it), may not reply right away if it's middle of night here

is 5 volts present @ 5v pin?
is 3.3 volts present @ 3.3v pin?
quote
i can't burn bootloader.
you have have programmer or arduino board acting programmer burn bootloader.
for you've described, board ok processor has either lost bootloader or has been damaged. next step replacement processor bootloader installed.
Arduino Forum > Using Arduino > Installation & Troubleshooting > Would like help figuring out what I've done to my Uno R3
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