Welcome to PhantomPilots.com

Sign up for a weekly email of the latest drone news & information

I am trying to calibrate my Phantom 2 vision + but keep getting a message the "MC" is too hot.

Discussion in 'Phantom 2 Vision + Help' started by Stewart, Jul 19, 2015.

  1. Stewart

    Joined:
    Jul 19, 2015
    Messages:
    8
    Likes Received:
    0
    I am trying to calibrate my Phantom 2 vision + but keep getting a message the "MC" is too hot. What does this mean? Attached is a screen shot of what I see.

    Thanks
     

    Attached Files:

  2. msinger

    Approved Vendor

    Joined:
    Oct 30, 2014
    Messages:
    19,066
    Likes Received:
    5,611
    Location:
    US
    When doing an IMU calibration, you should start it as soon as possible after turning on your Phantom. If you did that and it still tells you it's too hot, then just continue on with the calibration anyhow. All should be fine.

    If your Phantom was running for a while before you started the IMU calibration, then turn it off and let it cool down. It might even be helpful to let it sit in a cool place for 15 minutes or so before powering it on again.
     
  3. timmer

    Joined:
    Jun 30, 2015
    Messages:
    252
    Likes Received:
    74
    Location:
    New Orleans
    There are many threads here that suggest putting the Phantom in the refrigerator for about an hour, then do the IMU calibration.

    I did it yesterday and can attest that it reduced my "warm up" time to around 20 seconds from around two minutes.

    I had the RC on and the app running when I remove the Phantom from the fridge. I fired it up and then did the IMU calibration.

    Wow is all I can say!
     
  4. msinger

    Approved Vendor

    Joined:
    Oct 30, 2014
    Messages:
    19,066
    Likes Received:
    5,611
    Location:
    US
    I believe you are referring to the Phantom 3. The OP has a P2V+.

    Putting a Phantom in the fridge is not really a good idea. I know people are doing it though...
     
  5. Stewart

    Joined:
    Jul 19, 2015
    Messages:
    8
    Likes Received:
    0
  6. timmer

    Joined:
    Jun 30, 2015
    Messages:
    252
    Likes Received:
    74
    Location:
    New Orleans
    First off, Phantom Help is fantastic!

    Having said that, how is it detrimental using the P2V+ with a "cold" IMU calibration? I used to use Naza with my P1.
     
    #6 timmer, Jul 19, 2015
    Last edited: Jul 19, 2015
  7. Stewart

    Joined:
    Jul 19, 2015
    Messages:
    8
    Likes Received:
    0
    Maybe you can help with something else. When I first bought the Phantom and flew it, an alarm sounded when my batteries when too low and the red lights flashed on the quad. I did an update on it as was recommended to me and since, the alarm does not sound. The quad goes into go home mode instead. I know it is suppose to do this, but the alarm would sound before it went into go home mode allowing me to land it before it had to revert to go home mode. Is there a way to turn the arlam back on and how?

    Thanks
     
  8. mad in nc

    Joined:
    Dec 16, 2014
    Messages:
    534
    Likes Received:
    214
    Location:
    North Carolina US
    Stewart, Go through the screens on the Phantom Asst. to check RTH and height.

    Once you are ready to fly the Phantom is connected via the Vision App go to "settings" and verify RTH is set at the height you want and if you want it to land or RTH, and the battery alarm is also checked on before each flight.
     
  9. sdtag

    Joined:
    Apr 5, 2015
    Messages:
    221
    Likes Received:
    23
    +1 on the fridge trick
     
  10. BlackHawk388

    Joined:
    Jun 3, 2015
    Messages:
    507
    Likes Received:
    202
    Location:
    Point Washington, FL.
    I didn't take the time to read all of the remarks here. So this may be redundant.

    DO NOT worry about putting your Quad in the fridge. I've seen this mentioned so many times and I really do laugh each time I see it said.

    Have your Quad ready to go. No props installed, right next to a computer inside your home. Have a fresh battery ready as well. NOT right off the charger though. A battery that has been charged and allowed to cool down after doing so is best IMO.

    Have your Quads USB cord hooked to your computer and sitting next to you on a COMPLETELY level surface. DO NOT wait to ensure the surface is level after turning on the Quad. Install the cool battery. Turn on the TX and WiFi module. Then, turn on the battery/Quad. Immediately start the Assistant Software and then, go immediately to the advanced IMU Calibration and start it. The IMU advanced Calibration should complete well before you get the overheat message. IF it doesn't, then do this.

    1. Take a fully charged battery and place IT in your fridge for 45 minutes.
    2. Follow the above instructions.
    3. If Advanced Calibration doesn't complete or, your get the overheat message again, cool your battery in the fridge again and THEN, once installing the battery and turning on the Quad, on the Advanced IMU calibration page, click the BTU reset button first. This will wipe any previous calibrations from the unit and force the drone to do an advanced IMU calibration. Why this happens with the BTU reset, I don't know. However, what I DO know is that it just works.
    4. The Advanced IMU calibration should complete quickly now.
    5. Before the next flight, do the DJI dance PERIOD! Doesn't matter if you've done one in the past and had a successful DJI dance, you MUST do a new calibration dance once completing an Advanced IMU Calibration.

    Enjoy your now very stable Quad.

    ANY time I have my Quad start acting up, I do the BTU reset and advanced calibration. Then the DJI dance on site. My Quad then hovers so friggin finely that those who haven't followed my instructions are pissed theirs don't hover so well. ;)
     
  11. Mako79

    Joined:
    May 16, 2014
    Messages:
    3,418
    Likes Received:
    568
    Location:
    Sydney Australia
    DO NOT PLACE ANYTHING INSIDE FRIDGE!
    The MC warning is a real warning (for those that ignore it).

    To do a successful IMU calibration, do not fly phantom for an hour. Go charge the battery and have a beer.

    After 1 hr wait, start phantom assist pc/mac app. Goto the advance imu calibration screen. Plug usb into phantom and pc. Turn phantom on and do the adv calibration immediately. You should see green ticks in a minute or so. If done quick enough, you won't see the mc warning.

    Please do the adv imu on a levelled surface so this helps with yawing accuracy.
     
  12. shadow200

    Joined:
    Jun 7, 2015
    Messages:
    6
    Likes Received:
    3
    To alleviate getting this message I set my phantom on my floor air conditioning vents for 20 to 15 minutes before performing calibration. Has worked every time.
     
  13. N017RW

    Joined:
    May 2, 2014
    Messages:
    6,253
    Likes Received:
    1,615
    Location:
    Palm Beach Co.- FL
    I'd guess everyone has their own experiences and preferred way of doing things but I have only cal-ed my IMU 3 times in 16mos. with the last around New years.
    All 3 of these times the quad was at room temp (77F) and had not been on for hours (overnight). Hooked-up and within 15 secs. started P2 Assistant.
    All 3 times I got the temp. warning and ignored them.
    Never a problem for me.

    YMMV.
     
  14. LuvMyTJ

    LuvMyTJ ADMINISTRATOR
    Staff Member

    Joined:
    Feb 9, 2014
    Messages:
    6,811
    Likes Received:
    4,376
    Location:
    Live! From New York!
    The reason behind the fear of putting it into a cold environment like a refrigerator is the possibility of condensation forming on the important bits.
     
    dirkclod likes this.
  15. Stewart

    Joined:
    Jul 19, 2015
    Messages:
    8
    Likes Received:
    0
    Thank you to all of you for your advise. I managed to get it calibrated, without the warning, it flys fine.

    Thanks again
     
  16. MattRCGeeks

    Joined:
    Mar 16, 2015
    Messages:
    25
    Likes Received:
    4
    Sound advice. Don't drink and fly though ;)
     
  17. Fourprops

    Joined:
    Jul 18, 2015
    Messages:
    175
    Likes Received:
    34
    I place mine by the A/C return vent (ground floor unit) and let it set there for 30 min it may take longer but I don't have to worry about the possibly of condensation build up on the inside of my phantom. Just my 2 cents.
     
  18. BlackHawk388

    Joined:
    Jun 3, 2015
    Messages:
    507
    Likes Received:
    202
    Location:
    Point Washington, FL.
    Fourprops brings up a good point about condensation.

    I've not seen any condensation form when putting a slightly cooled battery into my P2V for an advanced calibration. However, that is going from the fridge right to the Quad inside my 70°F home. I was concerned about the possibility of condensation after the Quad being powered on for a few minutes, but none was ever noted.

    Having said that, I would never take my Quad outside with a cold battery in it. It's bad enough that when I go from inside my house to outside here in Florida, it's typically around 92°F with 55%+ humidity giving a "feels like" temperature of about 104°F. This means anything significantly cooler will sudden have condensation form. Like when you put on your sunglasses to go outside and they immediately fog up from condensation.

    I will personally leave my Quad in the hard case and allow that case to gradually warm up in the shade to prevent condensation. I also have a small, battery operated blower that I use to blow water off my vehicles after washing them. I use this blower to quickly dry out condensation if I want to immediately go flying and not wait for a slow temp rise inside the case to prevent the condensation from forming. I just leave the battery out of the Quad and direct air at the battery compartment. Seems to help.

    Sorry for rambling on. Just one more series of steps I take to ensure a better life for my Quad. I do love the little bugger.