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I previously succeed in uploading the code to DFRDuino Nano (Arduino Nano Compatible) (with wrong digital pins) but after changing pin I cannot upload it again.

From the document, I changed back the pins 0 (RX) and 1 (TX) are used for serial communication.

In arduino ide (1.8.19), I choosed board: Arduino Nano and Processor: ATmega328P(Old Bootloader)

The error:

. . .

avrdude: Version 6.3-20190619

        Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/

        Copyright (c) 2007-2014 Joerg Wunsch


        System wide configuration file is "C:\Program Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.57.0_x86__mdqgnx93n4wtt\hardware\tools\avr/etc/avrdude.conf"

        Using Port                    : COM3

        Using Programmer              : arduino

        Overriding Baud Rate          : 57600

avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00

avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x00

avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x00

avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x00

avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x00

avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x00

avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x00

avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x00

avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x00

avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x00


avrdude done.  Thank you.

An error occurred while uploading the sketch

I have reset both the board and computer but without luck. I changed another board and got the same error.

Any idea how to solve it?

UPDATE:

I uploaded the empty code to reset the board but it yielded the same error.

Improve this question
10
  • 1
    What do you mean by "uploading with wrong digital pins" and with "changed back the pins 0 (RX) and 1 (TX)"? On the Nano you cannot choose the pins of the Hardware Serial interface. They are literally hardwired
    – chrisl
    Aug 17, 2022 at 13:12
  • @chrisl I mean at first I used other digital pins for serial communication (d11 d12) using SerialSoftware and did not notice that d0 d1 are hardwired and used for serial com.
    – CoffeePlease
    Aug 17, 2022 at 14:20
  • 1
    What you are doing with SoftwareSerial in your sketch doesn't matter for the bootloader (which is handling the upload). Have you tried resetting the board right after you clicked on upload? It might take some tries to get the timimg right
    – chrisl
    Aug 17, 2022 at 23:46
  • Assuming "I changed another board and got the same error." means that you tried with another Arduino. Then the problem is on your PC. Did you select the right board and port?
    – the busybee
    Aug 18, 2022 at 6:02
  • @thebusybee I changed other DFRduino. I selected Arduino Nano and right COM since it was the only one)
    – CoffeePlease
    Aug 18, 2022 at 6:33

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