# UAVCAN servo support?

**URL:** <https://discuss.px4.io/t/uavcan-servo-support/27110>\
**Category:** PX4 Autopilot\
**Created:** [April 24, 2022, 4:16am UTC](https://discuss.px4.io/t/uavcan-servo-support/27110 "2022-04-24T04:16:05Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![DMarsell65](https://discuss.px4.io/letter_avatar_proxy/v4/letter/d/278dde/32.png) [@DMarsell65](https://discuss.px4.io/u/DMarsell65)\
**Post date:** [April 24, 2022, 4:16am UTC](https://discuss.px4.io/t/uavcan-servo-support/27110/1 "2022-04-24T04:16:05Z")

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I have an application requiring use of CAN based servo actuators of control surfaces. According to the PX4 UAVCAN peripherals documentation, UAVCAN servos were not supported at the time that section was last updated. I would like to confirm that PX4 does not currently support any CAN based servos (UAVCAN, DroneCAN, CAN2.0B, etc). If that is still the case, is there any activity related to adding this functionality? Any other suggestions are appreciated for alternatives providing CAN support.

Thank you in advance for any updates.

Dave

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**Author:** ![DMarsell65](https://discuss.px4.io/letter_avatar_proxy/v4/letter/d/278dde/32.png) [@DMarsell65](https://discuss.px4.io/u/DMarsell65)\
**Post date:** [May 23, 2022, 2:36pm UTC](https://discuss.px4.io/t/uavcan-servo-support/27110/2 "2022-05-23T14:36:11Z")

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I would appreciate suggestions on an answer for this issue. I previously brought this up in the developer’s call and was told I should post it on slack since there was no one on the call that could answer. I then found that I did not have a valid email domain to join the slack group, similar to issue posted a year ago with no reply to the OP on the issue ([Slack Invites?](https://discuss.px4.io/t/slack-invites/22857)). I emailed a moderator about this with no reply after a week. I would really like to determine if the PX4 solution would be appropriate for this commercial application but am getting a bit concerned about support if we go with PX4.

Thanks,

Dave

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**Author:** ![cemkaya](https://discuss.px4.io/letter_avatar_proxy/v4/letter/c/ac91a4/32.png) [@cemkaya](https://discuss.px4.io/u/cemkaya)\
**Post date:** [September 10, 2022, 12:14pm UTC](https://discuss.px4.io/t/uavcan-servo-support/27110/3 "2022-09-10T12:14:17Z")

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Have you found any solution or workaround to this problem so far? I noticed UAVCAN libraries including the servo control are present in PX4, but i couldn’t set it up.

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**Author:** ![hanzichi](https://discuss.px4.io/letter_avatar_proxy/v4/letter/h/bc79bd/32.png) [@hanzichi](https://discuss.px4.io/u/hanzichi)\
**Post date:** [February 19, 2026, 4:26pm UTC](https://discuss.px4.io/t/uavcan-servo-support/27110/4 "2026-02-19T16:26:53Z")

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Bump. It is not clear to me if servos (e.g. hitec or currowong) are usable on the PX4 UAVCAN bus. I see parameters for setting them up (e.g. UAVCAN\_SV), but haven’t had any luck getting any comms (nothing shows up with “uavcan status”), or getting any control in the actuators tab set up. Any links, etc would be appreciated. Or just an indication it is possible. Thanks!