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Topic: Programmer not responding (Read 1 time) previous topic - next topic

May 15, 2012, 09:18 am Last Edit: May 15, 2012, 09:22 am by KelvinLee516 Reason: 1
Hello people,

I've made a little buzzer system with my Arduino Uno few weeks ago, and it worked fine, until the day that i needed it, when i turned it on, and tested a little on the buzzer and poof, it died, and when i try to upload the blink sketch to see whether the board is still working, the programmer not responding problem showed up.

Prior to that, while I was testing the buzzers, one of the transistors burnt out of nowhere, and then when i did the upload, it failed, so I suspect that it has something to do with the transistor. Can anybody please help me troubleshoot this?

This is the circuit diagram showing how the transistor was connected.


Thanks. :)

Coding Badly


ah, i think i missed that. so no, i wasn't using any resistors for the transistor

Coding Badly


You will need a current limiting resistor on the transistor base.  You may also need a current limiting resistor for the buzzer.

Alright, i'll take note next time. But does that mean my Arduino is probably dead?

Coding Badly


The processor is very likely toast.  The rest of the board have survived.  Start with a loop-back test.

So I did that and the message didn't echo. so the processor is dead? How can I replace it or I need to get a new Arduino?

Coding Badly


The processor may or may not be OK.

The USB-to-serial converter is not OK.  If the board uses an Atmel processor for conversion (like on an Uno) it is possible that reflashing the firmware may resolve the problem.

Er. To be frank I don't really understand what you've said, so mind explaining it a bit further and pointing me in the right direction?

Coding Badly


I'm using an Arduino Uno with ATMEL processor on it

Coding Badly


Do you have a second working board of any kind?  Do you have a "programmer" like a USBtinyISP?

Nop, I dont have any. But if I really need it I think I'll be able to borrow an Arduino Mega from my friend.

Coding Badly


You won't need a second board / programmer.  Sort about that.  Instructions for reflashing the firmware...

http://arduino.cc/en/Hacking/DFUProgramming8U2

I've just tried it step by step like how it was written in the guide, but it failed when I do "sudo dfu-programmer erase". It says "no device present".

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