Should I flash the firmware to the one listed on Walkera website?

Discussion in 'Walkera Runner 250' started by ayeosq, Nov 30, 2017.

  1. ayeosq
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    ayeosq New Member

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  2. bjr981s
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    bjr981s Moderator Staff Member

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    no.

    Couple of things;

    The location you're flying is above reo steel enforced concrete. This will drive the compass crazy.
    Y(U are flying in ground effect as you are too close to teh ground.

    Find a grass part somewhere and try again.

    Make sure that you calibrate the compass. Do the slow rotation calibration flights with power downs and then try GPS.

    Cheers
     
  3. ayeosq
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    ayeosq New Member

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    Hey Brian,

    Did a bit of flying in the morning, you are right that flying in an open field surely make things easier.
    Just to confirm, when you turn on GPS Hold, what are the condition.
    Know about the throttle need to be at least halfway up to be able to activate.
    What happens if I turn on Throttle Hold after GPS Hold?
    And what are the condition before Throttle Hold gets activated?

    Bear in mind I am using the enhance Devo 7 config and my D/R are always on 100%.
     
  4. bjr981s
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    bjr981s Moderator Staff Member

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    Before you arm your model. Make sure that you have at least 7 sats in the Lock.

    Arming the model saves the GPS coordinates for RTH. If you don't wait for enough Sats the Home position could be 20 miles away. This is the cause of most GPS flyaways from Walkera.

    Make sure that you have at least 1 good calibration before you fly at a new location. (> 50Klms away) This is due to issues with true north and your attitude location.

    When you calibrate you must complete and have the model back down on the ground before the lights stop flashing. If they stop while you are calibrating the calibration fails. There is no indication of a failed Calibration on this model.

    After a successful "RAW" calibration you must fly in manuel mode for about 1 minute and slowly yaw the model around a 360 degrees at least once. Then land, power down and then power up again and repeat 3 times. The power down saves the new fine tune calibration and three times gives it a good fine tune, ready for GPS flight and RTH.

    You can switch from manual flight to GPS flight in the air. Or you can take off in GPS mode. Once you have switched to GPS do not switch backwards and forewords if the battery is below 50% usage. (this is a warning in the Documentation from Walkera)

    Switching in the air from GPS to manual means you need to have the throttle at 50%.

    The throttle is only a throttle in manual mode. In GPS it is a ascend and descend rate control.

    If you invoke RTH do not move the throttle away from 50%.

    The programming I did for the radio to prevent the FOD by raising the throttles so they never stop only happens when you are in Manual mode. As with GPS and RTH there is no throttle, it disables the throttle advance so the Ascend and Descend controls work correctly.
    So the Throttle hold switch has no effect when in GPS mode.

    Happy flying.

    Cheers Brian

    The process for flying is activate the motors in manual. Flip the throttle hold switch to "idle up" the motors then fly. Manual or GPS.

    When you land in manual flip the Throttle hold switch back to stop the motors.
     

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