upload hex data to atmel chips

[issue]

uploading code with avrdude to atmel chips, get error:
avrdude: stk500v2_command(): command failed
avrdude: stk500v2_ReceiveMessage(): timeout

[thinking]

it has worked a day ago, just connected a potentiometer to pin sck, GND and VCC.

[Workarround]
remove the potentiometer connection to VCC pin or remove the connection from potentiometer to SCK pin during the upload, because it courses a closed-loop during
the uploading.

IT is allways better just load your chip without any other element connected.

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About yingding wang
i am looking forward to innovation in IT and Robotics

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