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puneetverma24
04-21-2012, 08:41 PM
Most of time when i tries to upload code , i got following message

avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51

any one knows, how to solve this problem?

vikas
04-21-2012, 11:34 PM
not in sync: resp=0x00

Arduino did not respond. This can be due to a n number of reasons.

puneetverma24
04-21-2012, 11:51 PM
if i change the speed of port(in device manger) to some different values ,then it works properly .

before each write , i have to change the speed of port.

shamikrudra
04-23-2012, 05:00 PM
your port speed should be 19200 for auto reset to work
or first press upload button then press reset button

puneetverma24
04-27-2012, 06:20 PM
your port speed should be 19200 for auto reset to work
or first press upload button then press reset button

Ya that's the problem i am facing,something wrong with auto reset.
i have to press reset button manually.

shamikrudra
04-27-2012, 07:20 PM
Arduino serial board with transistor working great for auto reset
but my serial board with max232 not working auto and manual reset not working.
I did not find any ans for that.
I think auto reset should use a transistor for great success. any body agree with me?
I will again make a board with max232 for this reason when ever I will get time.
Vcc->10K->colector,reset pin
RTS->max232->Base
emitter->GND
is this connection ok for auto reset?