lang
New Member
Posts: 2 
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Post by lang on Aug 23, 2014 7:18:16 GMT -8
Hey all, I can't seem to load programs correctly anymore. Before I left on vacation, everything worked fine, but now, about 3 weeks later, it won't work.
When I try to load a program, the green power led is on, and the tx green led blinks 3 times, then I get the error message:
avrdude: stk500_getsync(): not in sync: resp=0x00
The com port is set correctly (com3) and I'm set to arduino uno. I'm using arduino 1.0.5-r2. I'm not sure why we're not communicating properly.
Any help is appreciated!
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jasea
Junior Member
Posts: 53
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Post by jasea on Aug 23, 2014 9:37:16 GMT -8
Hi Lang, I did a Google search on your error message plenty hits. It seems that the message really means that the computer and STEM Board can't communicate. A couple of the "easy" fixes are Try pressing reset on the board before uploading the program, You could also check that you have no connections to digital pins 0 & 1 RX & TX. You could try looking at what other people have done to solve the problem on an Arduino UNO see the results for a Google search on the error message.
John
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lang
New Member
Posts: 2
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Post by lang on Aug 24, 2014 7:54:02 GMT -8
Thanks Jasea - I did a google search as well, and tried all the easy things. I thought it was weird that everything worked fine, nothing was changed, and then it didn't work anymore. I recognize it's a communication problem, but I can't figure out why (not that I"m an expert on these things). I was hoping there was a pibot specific solution that I hadn't seen yet.
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jasea
Junior Member
Posts: 53
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Post by jasea on Aug 24, 2014 11:16:06 GMT -8
Lang,
Do you have another Arduino? if so that you could load another program like "Blink" to check that there are no problems with the drivers on your PC. If you don't have another MCU then you could try removing all of the connections from the STEM board and see if the blink program will load. Do you have access to another PC, if so you could try installing the Arduino IDE on that and then see if the STEM Board will load.
Some of the hits I found on Google suggested that the boot loader may be the problem. But remember that the STEM Board is similar to the Arduino Uno and not identical, I would wait until you get confirmation from the STEM support before attempting to burn a new Boot loader from the Arduino IDE. Perhaps if Mel or one
of the other administrators see this post tomorrow they may get in contact with you to help solve this problem.
John
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