شیلد اترنت آردوینو Arduino Ethernet Shield R3

[kingpin]

با سلام من يک شيلد w5100 خريداری کردم که بر روی برد uno سوارش کردم
مشکلی که دارم وقتی ميخوام شيلد رو با يکی از نمونه های موجود در IDE آدرينو لروز رسانی کنم خطا ميگيرم:

avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x6d
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x6d
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x6d
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x6d
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x6d
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x6d
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x6d
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x6d
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x6d
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x6d
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.



کسی از دوستان تجریه حل اين مشکل رو داره؟

[kingpin]

درضمن در صورتی که برد شيلد رو از uno جدا کنم برنامه ethrnet براحتی آپلود ميشه
ولی متاسفانه وقتی شيلد رو دوباره بر روی برد uno ميگذارم اترنت برد فعال نميشه!!