Hi guys!I solved this problem downloading the chip controller driver in this chinese site http://www.wch.cn/download/CH341SER_EXE.htmlI hope to help those who are also with this problem by using the Arduino Uno R3 with Atmel 328pGood Luck!
Ok, since the site is completely in chinese, I am very hesitant to download.I hadn't touched my UNO in a few months, been mainly playing with nano's. Went to upload some code the other day, got a similar error (avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x07). Shortly after, my nano's stopped uploading (win7). Went and upgraded to 1.6.5 IDE, and it fixed the nano issue. Still getting the same error on the Uno though. It's recognized as an Uno on Com5 (it's always been on com5), the power light is on, and led on 13 is on. When uploading, every 10 seconds or so the Rx light blinks once. All code, including the blink example, no wires attached, has the same result. I have tried other 328's on the board too, as I was planning to use the Uno to program some chips. Any suggestions?