# QGC initialize UAVCAN for px4 flight stack (Solved)

**URL:** <https://discuss.px4.io/t/qgc-initialize-uavcan-for-px4-flight-stack-solved/8066>\
**Category:** QGroundControl\
**Created:** [October 10, 2018, 8:58am UTC](https://discuss.px4.io/t/qgc-initialize-uavcan-for-px4-flight-stack-solved/8066 "2018-10-10T08:58:23Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![SeregaKai](https://discuss.px4.io/user_avatar/discuss.px4.io/seregakai/32/4753_2.png) [@SeregaKai](https://discuss.px4.io/u/SeregaKai)\
**Post date:** [October 10, 2018, 8:58am UTC](https://discuss.px4.io/t/qgc-initialize-uavcan-for-px4-flight-stack-solved/8066/1 "2018-10-10T08:58:23Z")

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Hello! I use last daily build QGC. I updated of firmware by QGC and selected PX4 Flight Stack 1.8.0 (Stable).  
I want to start using uavcan and I have no expirience.  
And I can not to search parameters for UAVCAN enable and settings.  
Moreover I could not find parameters for CAN at all.

I try to use stable QGC version and dev build version for firmware, but it did not help.

In accrording Zubax manual for UAVCAN initializing I hope to see “Enable uavcan…” checkpoint on Power tab, but it is not.

 ![](https://discuss.px4.io/uploads/default/original/2X/c/cf0ba607d4bc1033c60766d071d60587493460d4.png)

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**Author:** ![SeregaKai](https://discuss.px4.io/user_avatar/discuss.px4.io/seregakai/32/4753_2.png) [@SeregaKai](https://discuss.px4.io/u/SeregaKai)\
**Post date:** [October 12, 2018, 8:45am UTC](https://discuss.px4.io/t/qgc-initialize-uavcan-for-px4-flight-stack-solved/8066/2 "2018-10-12T08:45:16Z")

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The problem is solved!

The QGC recognize my hardware as PX4FMU\_V2, and offers to use firmware limited size \< 1MB and uavcan was not included in this firmware.  
My hardware have 2 MB flash and I downloaded px4fmu-v3 release ([https://github.com/PX4/Firmware/releases](https://github.com/PX4/Firmware/releases)) and upgraded px firmware by this version.  
After this operation UAVCAN\_ENABLE parameter appeared in QGC.

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**Author:** ![Niranjan1](https://discuss.px4.io/letter_avatar_proxy/v4/letter/n/6f9a4e/32.png) [@Niranjan1](https://discuss.px4.io/u/Niranjan1)\
**Post date:** [March 30, 2019, 9:31pm UTC](https://discuss.px4.io/t/qgc-initialize-uavcan-for-px4-flight-stack-solved/8066/3 "2019-03-30T21:31:08Z")

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Hi,  
Yes, I was also able to fix the issue. But as per the documentation, the uavcan subscribe function for esc is not working for me when I initiate the command “uavcan start”.  
Do I have to enable any other header apart from what you mentioned above?  
any pointers would be helpful.  
Thanks and regards  
Niranjan