ช่วยทีครับ Error อะไร

จากบทความนี้ http://www.arduinoall.com/article/%E0%B8%AA%E0%B8%AD%E0%B8%99-%E0%B8%A7%E0%B8%B4%E0%B8%98%E0%B8%B5-%E0%B9%83%E0%B8%8A%E0%B9%89%E0%B8%87%E0%B8%B2%E0%B8%99-arduino-wi-fi-module-esp8266-%E0%B8%97%E0%B8%B3%E0%B8%AA%E0%B8%A7%E0%B8%B4%E0%B8%95%E0%B8%8A%E0%B9%8C-wifi-%E0%B9%83%E0%B8%99-3-%E0%B8%99%E0%B8%B2%E0%B8%97%E0%B8%B5

พอ อัพโหลดโค้ดไปแล้ว มันขึ้นยังงี้ครับ

Sketch uses 11,078 bytes (34%) of program storage space. Maximum is 32,256 bytes.

Global variables use 828 bytes (40%) of dynamic memory, leaving 1,220 bytes for local variables. Maximum is 2,048 bytes.

avrdude: stk500_recv(): programmer is not responding

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

avrdude: stk500_recv(): programmer is not responding

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

avrdude: stk500_recv(): programmer is not responding

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

avrdude: stk500_recv(): programmer is not responding

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

avrdude: stk500_recv(): programmer is not responding

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

avrdude: stk500_recv(): programmer is not responding

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

avrdude: stk500_recv(): programmer is not responding

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

Problem uploading to board.  See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.

avrdude: stk500_recv(): programmer is not responding

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

avrdude: stk500_recv(): programmer is not responding

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

avrdude: stk500_recv(): programmer is not responding

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

This report would have more information with

"Show verbose output during compilation"

option enabled in File -> Preferences.