The video below (enable audio!) shows a detailed overview of the new Pixracer flight controller.

It is the 4th generation of the Pixhawk flight controller family (make: FMUv4) and like the first generations designed by the Pixhawk Open Hardware team in collaboration with an international dev team. It supports the PX4 and APM flight stacks. If you like to try PX4 on it, follow the user guide.

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Comment by PX4 on January 17, 2016 at 3:02am

@Tobias There are many users which want just this one additional thing - one more CAN port, one more I2C port, one more ADC. But this board has been built for small quads and planes. If we add all the one-mores, we end up with Pixhawk, which is why I recommend its use.

Comment by Johnatan on January 17, 2016 at 3:49am

I think when Pixhawk 2 is released most of this confusions are going to be resolved!

Comment by Patrick Poirier on January 17, 2016 at 6:03am
Great product PX4, this is the perfect choice for going into the sub 250 gram category.
It can be a perfect companion for the Raspberry pi Zero as well, got to shrink my connectors, tools and soldering iron and learn to how work under a microscope now :-)
Comment by Kay Fricke on January 17, 2016 at 12:44pm

Dear Folks,

I got one pixracer and the power distribution sitting here on my desk.

btw it comes with a rich assortment of cables, which enables you to hookup a wide range of receivers (spektrum satelite, ppm, sbus, included here is one cable on the breakout for rssi in). Also the cable for gps/compass (3dr combo) and the power distribution is included, which reports voltage and amp.  

One of the highlights for me is, that the pixracer has a dedicated frsky telemetry port, where you can get all the telemetry from the flightstack to the taranis, which i find very handy.

In general, I think this controller has a great future, especially in regards of the now overall starting national regulation of uavs. Here in switzerland all copters below 500gr are exempt from special regulations, and to my understanding this is true also for germany and the us of a.
So this might give us back a degree of freedom, which for heavier multirotors is now vanishing.
Great Work!

Many Many Thanks to the Pixracer dev-team


Comment by Quadrocopter on January 17, 2016 at 6:14pm

Brilliant !!

Boards are getting smaller and more powerful day by day :-)

Keep it up.


Comment by Rob_Lefebvre on January 18, 2016 at 6:07am

Not to mention, there's no engineering data that shows OneShot125 actually makes a significant difference.  I believe the racing quad flight controller market is undergoing the equivalent of "the MegaPixel Wars", but this time with loop times.  Some groups are moving towards 10kHz ESC updates.

Comment by wrostek on January 18, 2016 at 12:33pm

Is my understanding correct that upgrading my plane with APM I should look for Pixhawk2 or a larger Pixracer based FC which both may come out this spring?

Wolfgang R.

Comment by Johnatan on January 18, 2016 at 3:31pm

@wrostek Current Pixracer works just fine! You are gonna save a lot of space!

Comment by Thomas Butler on January 18, 2016 at 11:30pm

I fail to understand the hype of "pixracer". It is merely another flight controller. In addition, I cannot understand why the folks (3DR) who are designing these boards fail to understand the fundamentals of resonance; isolation and dampening. You should have hired an ME five years ago. This board is what a PixHawk should have been  five years ago. i.e., all the "power management, secondary CPU, and no superfluous ESD crap, and unreliable expensive connectors" is gone; aka Crius All-in-One.  The accel and gyro must be on a separate module isolated by an FFC cable or similar. 

Kudos for the miniaturization, but you still need to off-board the 9250.

In two months, the Far East juggernaut will make this cheaper and better; sorry?

Comment by PX4 on January 19, 2016 at 12:16am

@Thomas The fact that you can buy a Pixraptor today merely makes the point of open hardware. Its designed to be manufactured and improved by as many as possible, including Shenzhen. Pixracer is also aggressively designed against cost. Your whole mechanical considerations are over the top for a low-cost racing system, you can isolate the whole board and the connecting wires are high-flex silicon.

However, if you have been closely watching you must have noticed that none of these manufacturers updated the sensors in several years. Why? Because they are doing zero contributions on the software development side. So in order to progress, its inevitable the core project needs to release a new design every now and then, and you will see in the next months that a lot of manufacturers will be empowered by the new options for new sensors we just gave them.

What you're describing is the whole intent behind open hardware, not an unintended consequence.


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