Can anyone be kind enough to advise if they have had an UNO suddenly just go bad? This is a KUMANTECH clone UNO R3 that I've had for about a month. It has worked flawlessly until this afternoon. I had a sketch uploaded that worked perfectly inside then went to 9v battery and still OK. Powered off to use it outside for my project...this was in IR Remote project. Plugged in the 9v battery...I got no IR response whatsoever when powered up outside. Took it back inside, connected to USB and tried to upload the sketch again...after a couple minutes I rec'd an error..."ERROR UPLOADING." ??? I noticed the LED13 is on constant even though there is nothing in the sketch relating to that pin. Thanks in advance. Fortunately UNO's are pretty inexpensive to replace if that is the consensus.
to check something simple, I tried uploading BLINK and I recv this message
Sketch uses 928 bytes (2%) of program storage space. Maximum is 32256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0xc0
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0xc0
avrdude: stk500_recv(): programmer is not responding
goes on for attempt 10 of 10.
Confirm your board and COM port settings are proper.
Try a new USB cable.
Try the loop back test.
.
Larry,
Thanks for your suggestions. Disconnected everything. Checked those items and performed the loop back test...RX light blinks, but no echo and TX light stays off. Perhaps I shorted something when setting up my project. Oh well, ordered a handful to make sure I have a spare.
John