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Permalink Reply by Nick Moody on April 22, 2016 at 12:49pm

Thanks James,

I will have a look at it! 

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Permalink Reply by Mark Slater on May 6, 2016 at 12:27pm

Have the same setup - Can't get the T4-3d to see sbus channels greater than CH9  

Does the pix just replicate the input sbus signal or is it more intelligent

Just looking for Docs now ....

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Permalink Reply by Richard Joy on Wednesday

I see that this is an old post but wondered if someone had found a solution to adding a Tarot T4-3D gimbal to a Pixhawk. Ideally I would like to be able to have control from mission scripts as well as manually from the TX. The gimbal can be configured to accept 2 channels of PWM or SBUS. SBUS would be preferable but I am not sure of I can use the SBUS out from the Pixhawk. I know that I can use the AUX outputs to have the Pixhawk control the tilt and pan but the SBUS would allow me to have a 3rd channel to change the mode to PAN or FPV.

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Permalink Reply by Will Masters on Thursday

I had a T4-3D gimbal connected to my pixhawk and was able to control either 2 or 3 axis (I can't remember if the Tarot configurator allowed me to control all axis). I ran sbus from my rc rx to pixhawk. I connected the sbus out port from pixhawk to the sbus in at the tarot gimbal controller. I was worried about compatibility, etc, but it worked just fine. Note that you need to configure sbus passthrough in Mission Planner and, as far as MP's concerned, there was no gimbal to control - pixhawk just acted as a sbus passthrough for certain channels from my receiver to tarot gimal controller. 

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Permalink Reply by Richard Joy on Thursday

Thanks Will, I did get it to work after some trial and error.

I am using a FrSky X8R receiver and have its sbus out connected to the RCIN of the Pixhawk. The Sbus out of the Pixhawk is connected to the Sbus in of the Tarot T4-3D gimbal which is setup to use sbus channel 10 for tilt, 11 for FPV/Pan follow and 12 for pan. To have the same channels pass through from he receiver I had to set the parameter BRD_SBUS_OUT from 0 to 1, RC10_FUNCTION, RC11_FUNCTION and RC12_FUNCTION from 0 to 1. I also had to press the safety switch to get it to work. Now if I change RC10_FUNCTION to 7 it looks like tilt can be controlled from the mission scripts but I need to make some more tests.

Will Masters said:

I had a T4-3D gimbal connected to my pixhawk and was able to control either 2 or 3 axis (I can't remember if the Tarot configurator allowed me to control all axis). I ran sbus from my rc rx to pixhawk. I connected the sbus out port from pixhawk to the sbus in at the tarot gimbal controller. I was worried about compatibility, etc, but it worked just fine. Note that you need to configure sbus passthrough in Mission Planner and, as far as MP's concerned, there was no gimbal to control - pixhawk just acted as a sbus passthrough for certain channels from my receiver to tarot gimal controller. 

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