# BLHeli Pass through for px4

**URL:** <https://discuss.px4.io/t/blheli-pass-through-for-px4/3798>\
**Category:** Uncategorized\
**Created:** [July 5, 2017, 7:48pm UTC](https://discuss.px4.io/t/blheli-pass-through-for-px4/3798 "2017-07-05T19:48:24Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![Bharath\_Nagarajan](https://discuss.px4.io/letter_avatar_proxy/v4/letter/b/3e96dc/32.png) [@Bharath\_Nagarajan](https://discuss.px4.io/u/Bharath_Nagarajan)\
**Post date:** [July 5, 2017, 7:48pm UTC](https://discuss.px4.io/t/blheli-pass-through-for-px4/3798/1 "2017-07-05T19:48:24Z")

</div>

Have a miniquad with BLHeli ESCs and a PX4 FC. How to pass through for PX4?

---

<div class="post-metadata">

**Author:** ![rolandash](https://discuss.px4.io/user_avatar/discuss.px4.io/rolandash/32/4936_2.png) [@rolandash](https://discuss.px4.io/u/rolandash)\
**Post date:** [July 6, 2017, 3:07am UTC](https://discuss.px4.io/t/blheli-pass-through-for-px4/3798/2 "2017-07-06T03:07:01Z")

</div>

I am afraid under current releases it is not possible.  
What is your specific requirements about pass through?

---

<div class="post-metadata">

**Author:** ![Bharath\_Nagarajan](https://discuss.px4.io/letter_avatar_proxy/v4/letter/b/3e96dc/32.png) [@Bharath\_Nagarajan](https://discuss.px4.io/u/Bharath_Nagarajan)\
**Post date:** [July 6, 2017, 3:27am UTC](https://discuss.px4.io/t/blheli-pass-through-for-px4/3798/3 "2017-07-06T03:27:57Z")

</div>

I have an aircraft with a pixhawk mini and cicada 30a BLHeli ESCs. I want to calibrate the ESCs and flash them with latest firmware so I can get the quad in the air. I tried using all the pass throughs with BLHelli suite to connect my FC to the ESCs. Did not work though. “Loaded” infinitely or stopped responding all the time.

How do I approach this problem. I will be using q ground control as a mission planner and intend to have PX4 flashed. Am a n00b with PX4 so all help appreciated.

Thanks in advance! 🙂

---

<div class="post-metadata">

**Author:** ![rolandash](https://discuss.px4.io/user_avatar/discuss.px4.io/rolandash/32/4936_2.png) [@rolandash](https://discuss.px4.io/u/rolandash)\
**Post date:** [July 6, 2017, 3:38am UTC](https://discuss.px4.io/t/blheli-pass-through-for-px4/3798/4 "2017-07-06T03:38:50Z")

</div>

QGC can calibrate BLs, but cannot update ESC firmware yet. So you still have to use BLHeliSuite to flash and tuning ESC params.

Or get a programming card from your ESC vendor would be easier before PX4 can support that.

---

<div class="post-metadata">

**Author:** ![Dave84](https://discuss.px4.io/user_avatar/discuss.px4.io/dave84/32/10033_2.png) [@Dave84](https://discuss.px4.io/u/Dave84)\
**Post date:** [June 30, 2018, 11:26pm UTC](https://discuss.px4.io/t/blheli-pass-through-for-px4/3798/5 "2018-06-30T23:26:29Z")

</div>

Good day,  
I’ve built a new 250 fpv quad… before flying i need to know if the hobbywing 35a esc with blheli firmware are compatibles with px4 firmware 1.7.3.  
"Regards

---

<div class="post-metadata">

**Author:** ![tianyu](https://discuss.px4.io/letter_avatar_proxy/v4/letter/t/9f8e36/32.png) [@tianyu](https://discuss.px4.io/u/tianyu)\
**Post date:** [July 27, 2020, 11:26am UTC](https://discuss.px4.io/t/blheli-pass-through-for-px4/3798/6 "2020-07-27T11:26:08Z")

</div>

Hi, ralandash, it would be very handy to have the BLHeli pass-through support to tune the ESC parameters. Do you guys have any plan to develop this feature?

Than you very much.