This post is to report my experience with the failure rate of a particular product from a particular vendor - do not over interpret.
The product I evaluated is:
http://www.banggood.com/5Pcs-ATmega328P-Arduino-Compatible-Nano-V3-Improved-Version-With-USB-p-951782.html
The failure rate is 16% - 4 out of 25 Arduino nano board are bad.
* This board needs driver from:
http://wch.cn/downloads.php?name=pro&proid=5
Problems ranging from:
1. Unknown Device - PC recognized a USB device being attached but do not
know what kind.
2. No Action:
PC does not even a USB device is being attached.
3. Not in sync. PC recognized the Nano and allocated COM5. But when try to
upload a program, I receive the error message:
avrdude: stk500_getsync(): not in sync: resp=0x00
I will see what Banggood.com would do and report back. For now, just plan ahead and take the fail rate into your order and expecting 16% of your order could be bad.
========= Update 20150411 ========
Just got the replacement from Banggood. I am happy with their customer service.
