User Manual

avrdude: stk500():not in sync: resp=0x00

in some rx or tx during the upload of the new firmware , is possible that the ide at

the end show this error code “avrdude: stk500():not in sync: resp=0x00 “

Why this happen? The reason is ,that the arduino ide is not able to see the

arduino board, too many reason can produce this error code , for example if you

try to upload a code , without a board connected , you can see this error

“avrdude: stk500():not in sync: resp=0x00 “ so this means that something

prevent the arduino ide , to see the board , so you check tipe of board , com port

, or if the driver are well installed , if not or wrong installed in start-control panel-

sistem-hardware,is shown all devices if one of them is marked whit a yellow dot (

! )it means that the driver is not installed.

But another reason can produce this error , the “ bootloader “

It as a code, just few line ,written in the eprom of the microchip , the boot loader

listen if an ide I ready to upload a code, when the microchip is switched on , but

if the bootloader is not installed or damaged an error is shown .

In this issue i explain how fix it , in my case I use two type of programmer one for

the bootloader “ usbasp” and one for the code “avrisp”, only in this way I can

upload the rx and tx firmware.

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avrdude: stk500():not in sync: resp=0x00 in some rx or tx during the upload of the new firmware , is possible that the ide at the end show this error code “avrdude: stk500():not in sync: resp=0x00 “ Why this happen? The reason is ,that the arduino ide is not able to see the arduino board, too many reason can produce this error code , for example if you try to upload a code , without a board connected , you can see this error “avrdude: stk500():not in sync: resp=0x00 “ so this means that something prevent th
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connect your usbasp as shown in the photo is the same way for the rx and the tx select 3.
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select the board
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check in start-control pannel-service-hardware- the usbasp device , the com post is opened automatically select the device on arduino ide
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upload the bootloader and at the end disconnect the usbasp device
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plug the wires on the avr isp programmer as shown see the color and pin name
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and plug the wires in the rx or tx following the color connection and the pin name
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select the board “ but you have already do it the step before “
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check the com port of the device
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select the device avr isp on the arduino ide then upload the code this is my tx with the rc milec ½ wave antenna to increase the range the same antenna on the rx if you have questions on suggestion please e mail me p66charly@tiscali.