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Topic: avrdude programmer is not responding (Read 27 times) previous topic - next topic


Oct 14, 2010, 02:23 am Last Edit: Oct 14, 2010, 03:19 am by bubba5656 Reason: 1
Macbook 10.4.11
new Arduino Uno atmel 328

I just got it and followed the getting started instrustion on this site(mind you i have nothing but the usb plugged in). Ive tried this with a several of the example sketches all with the same out come.

plug in the usb
open arduino 0021
open a example

while Im uploading the Tx and Rx do flash a little bit (the rx flashes much more the the Tx)

then it says

"avrdude: stk500_getsync(): not in sync: resp=0x86"
a few seconds pass then
"avrdud: stk500_recv(): programmer is not responding"

I think this issue is often asked and im sorry I did search and none of the solutions seemed to work. ps does it matter which usb it is plugged into? also yes in tools its set to uno and tty.usbmodem

Thank you for your time and help

pps I also tried it on another macbook with exactly the same problem. And if this helps the L led flashes 4 times then stutters the flashes 4 times and stutters over and over when it is just plugged in

Coding Badly


No I have already read through that post and was unable to resolve my problem with that solution. But this morning I used screen /dev/tty.usbmodem..... and it wrote 5 or 6 random ascii characters and thats all. I think it is connecting because the tx and rx leds do flash a bit and my mac does seem to see the arduino.


Any ideas anyone. Im gonna try uploading onto it today using a pc hopefully its something wrong with my lap top but I have a sneaking suspicion that its not the computer causing the issue

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