I haven't flown for about a week. Powered it up, got all correct lights ....only one set of long quick green flashes. Repowered quad and got both sets of long quick green flashes. Did the compass dance. All seemed well. After about 2 minutes it didnt hold gps position well. This is my yard and have flown here many times with no problems. Anyway while flying about 5 feet agl it just started drifting and it was like atti with a breeze. It did a light tumble on grass and I shut down props right away. Went over to it and started the props again and flew it to home point to change battery. Repowered with fresh battery....all lights ok. Did another compass dance. Horz part went ok but vertical part gave me constant quick red flashes. I set it on ground without disconnecting battery and flipped S1 til I got yellow again....another compass dance.....no problem now. It flew just fine ....home and course lock worked. Held gps position fine. Any ideas. The only thing I did differently on 2nd battery compass dance where I got the red flashes was hold the quad closer to my body. I had keys in my pocket but they are brass with a metal ring. Also I had a 1/4 inch magnetic chuck in my watch pocket. I don't think first and second flight problems are related. Comments