# Motor control using AUX port **URL:** \ **Category:** PX4 Autopilot\ **Created:** [July 28, 2023, 11:37am UTC](https://discuss.px4.io/t/motor-control-using-aux-port/33506 "2023-07-28T11:37:43Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Sanatan\_Biswal](https://discuss.px4.io/user_avatar/discuss.px4.io/sanatan_biswal/32/11508_2.png) [@Sanatan\_Biswal](https://discuss.px4.io/u/Sanatan_Biswal)\ **Post date:** [July 28, 2023, 11:37am UTC](https://discuss.px4.io/t/motor-control-using-aux-port/33506/1 "2023-07-28T11:37:43Z")
Hello everyone, I’m trying to control motor using AUX. Please help me if anyone know how to do so. ---
**Author:** ![Nezha\_Zahri](https://discuss.px4.io/user_avatar/discuss.px4.io/nezha_zahri/32/11926_2.png) [@Nezha\_Zahri](https://discuss.px4.io/u/Nezha_Zahri)\ **Post date:** [July 28, 2023, 1:11pm UTC](https://discuss.px4.io/t/motor-control-using-aux-port/33506/2 "2023-07-28T13:11:44Z")
You can check this page of the documentation: > **[Actuator Configuration and Testing | PX4 User Guide](https://docs.px4.io/main/en/config/actuators.html#actuator-configuration-and-testing)** > > PX4 is the Professional Autopilot. Developed by world-class developers from industry and academia, and supported by an active world wide community, it powers all kinds of vehicles from racing and cargo drones through to ground vehicles and... Let me know if this helps. ---
**Author:** ![Sanatan\_Biswal](https://discuss.px4.io/user_avatar/discuss.px4.io/sanatan_biswal/32/11508_2.png) [@Sanatan\_Biswal](https://discuss.px4.io/u/Sanatan_Biswal)\ **Post date:** [July 29, 2023, 10:20am UTC](https://discuss.px4.io/t/motor-control-using-aux-port/33506/3 "2023-07-29T10:20:38Z")
![Screenshot (14)](https://discuss.px4.io/uploads/default/original/2X/8/88c65eeb6aa94a1f74ad03eff24d7a2f7da3a5a1.png) I’m using quard copter setup and there is no actuator setup. ---
**Author:** ![Nezha\_Zahri](https://discuss.px4.io/user_avatar/discuss.px4.io/nezha_zahri/32/11926_2.png) [@Nezha\_Zahri](https://discuss.px4.io/u/Nezha_Zahri)\ **Post date:** [July 29, 2023, 3:57pm UTC](https://discuss.px4.io/t/motor-control-using-aux-port/33506/4 "2023-07-29T15:57:47Z")
Could you try one of these solutions? It might depend on which version of the fw you have. > [@Missing parameters in Motors Tab in QGroundControl](https://discuss.px4.io/t/missing-parameters-in-motors-tab-in-qgroundcontrol/29226): > > Hello I am using a Pixhawk Mini with PX4 pro-Stable Release v1.13.0 and QGroundControl Version v4.2.3. In the Vehicle Setup → Motors Tab I only have access to Motors Setup, while in the Actuator Configuration and Testing Page in PX4 User Guide [Actuator Configuration and Testing | PX4 User Guide](https://docs.px4.io/main/en/config/actuators.html) there are more parameters like Geometry and Actuator Outputs. Also, the name of the tab is different, I have a Motors Tab while the Documentation Page has an Actuators Tab In the Airframe Tab,… > [@Getting old Motor tab instead of the new Actuator tab](https://discuss.px4.io/t/getting-old-motor-tab-instead-of-the-new-actuator-tab/29419/9): > > Hi, I had the same issue too. I use a Pixhawk 4 (FW 1.13.1) connected to a companion computer via serial connection, then over wifi with mavproxy to the gcs, running QGroundcontrol. And I use the generic quad airframe. I had to update mavproxy.py to the newest version and QGCS to the new daily (Oct 20th) version. And I had also set the parameter to SYS\_CTRL\_ALLOC=1. Then it works for me. Otherwise you can do it directly in the code changing/setting the value of these parameters: **PWM\_AUX\_FUNCx** ![image](https://discuss.px4.io/uploads/default/original/2X/b/b31b317975c80b8c470bf158c5af536a03cfcd8b.png) You can add this kind of code into the airframe if you want to hardcode it. ```auto # Outputs param set-default PWM_AUX_FUNC1 101 param set-default PWM_AUX_FUNC2 102 param set-default PWM_AUX_FUNC3 103 param set-default PWM_AUX_FUNC4 104 ``` ---
**Author:** ![system](https://discuss.px4.io/uploads/default/original/3X/7/3/73ce918bdcd64854de904f0c8d9ab70ca9723f2a.png) [@system](https://discuss.px4.io/u/system)\ **Post date:** [September 10, 2025, 5:27am UTC](https://discuss.px4.io/t/motor-control-using-aux-port/33506/5 "2025-09-10T05:27:26Z")
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