Yesterday I upgraded all the firmware and charged the two batteries. Today I went out for a flight. Landed it after twenty minutes. Stopped the motors. Changed the battery, and now I am unable to restart the motors. The LEDs blink green and when I try to start the motors they blink red

Does that happen with more than one battery inserted?

IMU calibration sorted it out

Kind of weird that was the solution. I will find out more tomorrow. I only started the motors after recalibration

Gareth Posted at 2015-4-19 05:39
oakspi 2015-4-19 00:45
Does that happen with more than one battery inserted?

I'm glad you got it running again.  

Gareth Posted at 2015-4-19 05:39
oakspi 2015-4-19 00:45
Does that happen with more than one battery inserted?

Wow rude!!! Hope you were joking or you won't be getting much help in the future

Good to hear you fixed your issue

I am puzzled over changing the battery would force a IMU re-config. The center of gravity did not change...

Gareth Posted at 2015-4-19 05:59
I am puzzled over changing the battery would force a IMU re-config. The center of gravity did not ch ...

I'm sure you'll figure it out all by yourself. Good luck to you.

Post deleted

Do you have more than one battery?   Because that is what he was asking.  Does it happen with ALL your batteries or just one?

Resorting to name calling will get you zero around here.  There was absolutely no reason for that.  If you did not understand what he was asking, better to keep your keyboard silent.

Good luck in the future.

oakspi Posted at 2015-4-19 05:46
I'm glad you got it running again.

Thank you         

nrgwise Posted at 2015-4-19 06:36
Do you have more than one battery?   Because that is what he was asking.  Does it happen with ALL y ...

A flippant answer deserves a stupid response. I have two batteries. When I put the second one in the motors would not start

Gareth Posted at 2015-4-19 05:59
I am puzzled over changing the battery would force a IMU re-config. The center of gravity did not ch ...

You still have no clue as to what you did.  Your first post you said you updated but didn't do any calibrations.  That was your first mistake.  Read up on how this machine works grasshopper and you might avoid a crash in the future.

Gerry1124 Posted at 2015-4-19 16:28
You still have no clue as to what you did.  Your first post you said you updated but didn't do any ...

Good point Master Po. It is odd it fired up one time after the firmware updates and not after a battery change