# Thrusters starting when lights settings are changed

**URL:** <https://discuss.bluerobotics.com/t/thrusters-starting-when-lights-settings-are-changed/13281>\
**Category:** BlueROV2\
**Created:** [November 28, 2022, 12:28pm UTC](https://discuss.bluerobotics.com/t/thrusters-starting-when-lights-settings-are-changed/13281 "2022-11-28T12:28:52Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Corrinne99](https://avatars.discourse-cdn.com/v4/letter/c/f08c70/32.png) [@Corrinne99](https://discuss.bluerobotics.com/u/Corrinne99)\
**Post date:** [November 28, 2022, 12:28pm UTC](https://discuss.bluerobotics.com/t/thrusters-starting-when-lights-settings-are-changed/13281/1 "2022-11-28T12:28:52Z")

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We’ve had an issue with our lights not coming on, but when we tried to change the settings to turn the lights on, 2 of the thrusters are starting up and then cannot be switched off again except by removing the battery for the ROV. If anyone has any pointers, I’d be very grateful! Thanks

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**Author:** ![SaferHarbors](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/saferharbors/32/10325_2.png) [@SaferHarbors](https://discuss.bluerobotics.com/u/SaferHarbors)\
**Post date:** [November 29, 2022, 12:54am UTC](https://discuss.bluerobotics.com/t/thrusters-starting-when-lights-settings-are-changed/13281/2 "2022-11-29T00:54:54Z")

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I would recommend joy stick calibration for the thruster issue. Check your button configuration also. I have to calibrate the joystick every single dive.

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**Author:** ![EliotBR](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/eliotbr/32/6937_2.png) [@EliotBR](https://discuss.bluerobotics.com/u/EliotBR)\
**Post date:** [November 29, 2022, 6:42am UTC](https://discuss.bluerobotics.com/t/thrusters-starting-when-lights-settings-are-changed/13281/3 "2022-11-29T06:42:04Z")

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Hi @Corrinne99,

Which ArduSub version are you using, and what kind of joystick do you have?

I’d recommend trying/checking these options:

> [@Lights on BlueRov2 not coming on](https://discuss.bluerobotics.com/t/lights-on-bluerov2-not-coming-on/13279/2):
>
> - Make sure the output channels are selected correctly in the Lights page
> - Possibly try resetting your parameters from the Tools button in the Parameters page
> - Make sure your joystick button functions are set up to control the lights, in the Joystick page

> [@SaferHarbors](#):
>
> I have to calibrate the joystick every single dive.

@SaferHarbors That shouldn’t be the case unless you’re using a new joystick every dive, or your joystick’s sensor elements are actively changing as you use it (in which case it likely needs to be replaced).

QGroundControl should save the joystick calibration values when it completes a calibration, and load them again when it next starts up and detects the same joystick. Are you using a standard QGroundControl version, and common joystick setup?

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**Author:** ![Corrinne99](https://avatars.discourse-cdn.com/v4/letter/c/f08c70/32.png) [@Corrinne99](https://discuss.bluerobotics.com/u/Corrinne99)\
**Post date:** [November 29, 2022, 1:49pm UTC](https://discuss.bluerobotics.com/t/thrusters-starting-when-lights-settings-are-changed/13281/4 "2022-11-29T13:49:58Z")

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Thank you.

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**Author:** ![SaferHarbors](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/saferharbors/32/10325_2.png) [@SaferHarbors](https://discuss.bluerobotics.com/u/SaferHarbors)\
**Post date:** [November 29, 2022, 3:00pm UTC](https://discuss.bluerobotics.com/t/thrusters-starting-when-lights-settings-are-changed/13281/5 "2022-11-29T15:00:14Z")

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> [@EliotBR](#):
>
> QGroundControl should save the joystick calibration values when it completes a calibration, and load them again when it next starts up and detects the same joystick. Are you using a standard QGroundControl version, and common joystick setup?

I’m using all standard equipment. Even after calibration I will still look at the general joystick and see the calibration didn’t work correctly and the throttle will be all the way max.