How to enable oneshot in openpilot.

click to enlarge

1. Fist connect the CC3D board and open the openpilot groundstation software.
   
2. Click the Hardware configuration tab
   
3. Select PPM_PINS+OneShot from the “Receiver Port” dropdown
   
4. Click the Output tab.
   
5. Change the 1st 2 Bank(s) dropdowns to PWMSync.
   
6. Save and complete.
   

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We all want to reduce weight and space is at a premium, so here is a tutorial on how to reduce the weight and space of an expensive, but reliable OSD while also improving it by increasing the wire gauge from the standard it comes with.

In addition here is a link to the Alien 5 build where you can see some of the tips on how to minimize weight and clean up the build.

LiPo batteries can be dangerous. Here is a good video tutorial from the guys from FliteTest about handling them.

http://flitetest.com/articles/beginner-s...and-safety

Video from said tutorial:



Additional info: 
LiPo Battery bunker

Do you want to get a Quanum i8 radio transmitter for free?

• All you need to do is, post a link to a tutorial, whether it's a video, website or a thread on another forum (you can write your own tutorial if you want)
  
• describe in a few sentences, so people can actually find your tutorial when they search on the forum
  • what this tutorial is about
    
  • why is it useful
    
• Remember to insert a picture on the top of the article!
  

I still remember how excited I was when I first learned to do a flip on my quadcopter! I managed to get it right with the cost of breaking a couple of booms and many many props, but it's all worth it.

For example this is how I do a flip, same applies to roll:

1. Generally you punch the throttle to get some upward acceleration
   
2. Reduce throttle a little and give hard roll (push roll stick all the way to the end in whichever direction)... 
   
3. Once the quad has turn NEARLY complete the flip (360 degree), recover roll stick position and throttle up again to recover
   

In a brushless outrunner motor, the parts that generate friction is the shaft bearings. After some usage it might get dry and start making noise, lubricant can help improving the smoothness and efficiency.

https://oscarliang.com/oil-micro-brushless-motors/

Hello All!

I finished a build of 250 quad recently:



After some doings with the settings and radio and so on I finally got it to fly ok in autolevel. But in rate mode there is slight angle drift on pitch (it increases incline to back).


The trick here is that quad actually not balanced – it’s center of gravity is ~2.5 cm to back from the center. I know that it possibly will fly better if balanced, but I just want to understand where this angle drift comes from so I experiment with unbalanced quad.

As far as I understand, the “rate” mode is something like “angle lock” mode – sticks control the speed of angle change, and when sticks are not touched it should maintain the set angle. But it does not.

What confuses me a lot is that the speed of drift is different over time. At the flight start (battery full) – the quad maintains angle ok, but as closer it gets to empy battery, the more it changes angle by itself (up to about a degree per sec or even more).

Why it can behave like that? Can you, please, recommend me a direction to continue investigation? Again, I suppose I can fix it by balancing quad itself, but I want to understand this behavior as I expect it to keep angle.

Got my X-Racer F3 from fpvmodel today. Looks to be nice quality. Uses SPRACINGF3 hex. However, no vbat connection (voltage monitoring). So I added my own.. solder a voltage divider (same as i.e. for CC3D, 10k and 1k to BAT+/GND) to the pin shown.






The pin used for VBAT is PA4 according to the STM32 F3 datasheet.

Shared from Sascha Michalke on our FB Group

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I am looking for a brushed board for a sub 120mm build.
will be running Cleanflight for it's RGB LED support.

I am looking for a board that will run on 3.7v (1S batt),
has output for RGB LED

Thanks for any help,

Nick