Failure to be able to activate Arduino Mega 2650

[Martyn Arthur]

TL;DR Summary

Failure to be able to activate Arduino Mega 2650

hi; i purchased 3 of these,

AZDelivery 3 x AZ-MEGA2560-Board Bundle with Prototype Shield​

and each is reporting the error message below.

I have triple checked every aspect of the set up and all seems in order, cable devices port, board reburn bootloader et al . I have substituted an arduino uno and it works fine; could you help please
Thanks
Martyn
'avrdude: ser_open(): can't set com-state for "\\.\COM3"avrdude: ser_drain(): read error: The handle is invalid.avrdude: ser_send(): write error: sorry no info availavrdude: stk500_send(): failed to send command to serial portavrdude: ser_recv(): read error: The handle is invalid.avrdude: stk500v2_ReceiveMessage(): timeoutavrdude: ser_send(): write error: sorry no info availavrdude: stk500_send(): failed to send command to serial portavrdude: ser_recv(): read error: The handle is invalid.'

 

[jedishrfu]

It’s likely an upload/serial-port error on Windows, not a code problem. In plain English, AVRDUDE can’t talk to the board over COM3.

You might need a windows CH340 driver to talk to the card. Apparently AZ cards need that to interact with Windows.

There are other possible issues too. You should be able to find help on Arduino forums. I don’t think many members here work with these devices.

 

[pbuk]

Can you get the boards working through the Arduino IDE?
What command are you using for AVRDUDE?

 

[Martyn Arthur]

thanks, it is viewing the CH340; I've pretty much tried everything; giving up now; have acquired original - v - clone
Thanks
Martyn