Does this mean my Uno is blown?
I can't upload anymore, I'm getting the infamous "avrdude: stk500_getsync(): not in sync: resp=0x00" error
Using correct COM port, reinstalled driver, Windows 7, correct Arduino configured.
I thought these boards were supposed to be pretty tough - not.
And yes, I have gone through the full troubleshooting guide - also searched on old forum/internet etc. This pointed me to that LED 13 should blink - which is why I think the chip is blown, because I haven't fiddled with the bootloader in any way
I thought these boards were supposed to be pretty tough
No there is nothing on the board at all in the way of protection except a poly fuse on the USB power input.
It is possible that the bootloader has been corrupted so you could try reloading it again, but you will need some sort of programmer for that. The 328 processor chip should be still OK so don't bin it all.
I thought these boards were supposed to be pretty tough - not.
They really are. But if the chips electrical maximum ratings are exceeded for any reason then damage is sure to follow. This is usually the results of improperly wiring external components and voltages to the board. As of course we have no idea what may have caused you board problem we can only generalize.
The good news is that several vendors will sell you a replacement 328p chip with bootloader already installed for around $6.
Lefty
I might be able to get a replacement chip here (Cape Town) otherwise shipping makes it quite a bit more expensive. I guess I just need an ATMEGA328 with bootloader?
I was trying to drive an SN754410NE, to control a stepper (using the schematic from this site). After struggling for quite a while with an erratic motor, someone who doesn't know Arduinos but does know electronics a lot better than I do helped - and it turned out that my breadboard wasn't connecting pins....of course I had checked all my own connections besides the "obviously correct". And it seems like 1 pin on my Arduino wasn't working - didn't doublecheck but just used another. And a 12v battery for motor power - but we switched the wires to the motor a lot trying to get the motor to sequence properly. At some stage it is possible that we sent a spike back to the Arduino
Pin1? Did you use pin 1 in your sketch for something other than Serial?
You might have to play with the reset button to get another sketch to load. It generally doesn't cause a problem, but if you use the Arduino serial pins you might make it difficult to load new sketches. Sometimes its okay, but sometimes it can get you.
Not pin 1 - I meant one pin - think it was 9, anyway it was a PWM and I used a different PWM instead.
I think I should be more careful when juggling connections and take all power off first.
I've tried resetting at various timings when loading but always the same result. The fact that LED 13 doesn't blink on manual reset seems to mean that there is effectively no bootloader available - either corrupted or the chip is fried
Did you try this schematic arduino.cc. It blows my fuse all the time!
Cheers,
Kari