Replies to This Discussion

Permalink Reply by ctech4285 on September 10, 2012 at 9:01am

check the documentation make sure what you think is channel 3 is really channel 3, that signal + and - are connected right, then measure pwm output voltage with a multimeter, it should change with ch(x)out. plug in different servos....oh one more thing check that the power rail does not dip, measure Vout, the 5V that is powering the servo
ah and in MP disable failsave to be sure its not kicking in.

Permalink Reply by james sowell on September 10, 2012 at 7:59am

has anyone got the tophat switch to control the camera? if so how thanks

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Permalink Reply by Kabir on September 10, 2012 at 9:19am

Yeah, just set the hat's axes to Ch5/6/7 whatever in Mission Planner. Did this after installing Logitech Profiler though.

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Permalink Reply by John Githens on September 10, 2012 at 8:27am

@rocketgeek, after checking Amazon for reviews of the Logitech gamepad, I saw this review which may explain some behavior. (other than that, I am just beginning to explore using a joystick, so I can't answer technical questions on this topic.)

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Permalink Reply by james sowell on September 10, 2012 at 9:54am

thank you mohammed

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Permalink Reply by Veikko Vierola on September 10, 2012 at 9:58am

Reference:

Reply by ctech4285 34 minutes ago

check the documentation make sure what you think is channel 3 is really channel 3, that signal + and - are connected right, then measure pwm output voltage with a multimeter, it should change with ch(x)out. plug in different servos....oh one more thing check that the power rail does not dip, measure Vout, the 5V that is powering the servo
ah and in MP disable failsave to be sure its not kicking in.

 

Thanks for the tips :), got it working. What I did was this:

1. I opened parameters and switched FS_GCS_ENABL=1 (it was =0)

2. I enabled the joystick and it worked, but radio didn't work at the same time.

3. I disabled the joystick but radio didn't work after that either

4. I opened parameters again and switched FS_GCS_ENABL=0 (it was=1)

5. After that everything worked again Joystick and Radio (only joystick when joystick enabled, only radio when joystick disabled)

So I was basically able to use Joystick and Radio with both setups FS_GCS_ENABL 1 or 0

After further testing.....

It seems that I have to change the FS_GCS_ENABL parameter to 1 or 0 to get the Joystick working, it seems like the write params/read params procedure somehow activates the Joystick.

I also had to turn the pitch to reverse on joystick setup to get the elevator working right way. With normal radio the reverse is not needed...

Is it always sure that the parameter is really activated in APM when it is changed?

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Permalink Reply by Kabir on September 11, 2012 at 11:36pm

Are you flying without a radio? This happens if there is no radio connected. If you are, you need to override the radio_trim() in code.

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Permalink Reply by Veikko Vierola on October 15, 2012 at 10:26am

This joystick thing is now very confusing???

I have radio connected. When I enable joystick and move it the ch(x)in changes at the same time as the ch(x)out. So what is wrong with this system? If ch(x)out changes why doesn't the servos move? What prevents the movements of the servos?

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Permalink Reply by John Githens on October 15, 2012 at 10:36am

@Veikko:  This link does not currently answer your questions. I am posting the link here to help tie "joystick" threads together on DIY Drones.

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Permalink Reply by Veikko Vierola on October 15, 2012 at 10:52am

Hi, thanks for the info but I think it doesn't give me the solution. When I move the joystick the ch(x) output values move from about 1090 to 1900 and about 1500 in the middle. I really don't understand why the servos are not moving? How is it possible that I'm able to change the modes with the Joystick button but not able to move the servos? 

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