GPS Rescue mode in Betaflight is similar to “Return to Home” on a DJI drone. It is meant to help bail you out when your video feed or radio signal gets sketchy, the quad is supposed to return to you automatically using GPS.
I was flying at this beautiful seaside spot a few days ago, but my quadcopter failsafe’d and fell into the water. This is a good case study and we can talk about what to do after getting the drone out of water.
The location of the battery affects the performance and handling of your mini quad. The LiPo battery itself is a mass, in fact it’s so heavy it can change the centre of gravity. In this article we will discuss the benefits and downsides of mounting the LiPo on top and bottom of the frame.
This article explains what Feed-Forward is (previously “Setpoint Weight and Transition”), and how to tune it in Betaflight. “Derivative of error and measurement” are closely related to Setpoint weight / Feedforward, and they can give you very different flight characteristics.
Lipo batteries degrade over time, sometimes this degradation results in dead cells. It seems to be a waste to throw the whole pack away because other cells might still be working. In this post we will show you how to make a working LiPo by combining the good cells from multiple damaged/defective batteries.
The Fatshark battery case is a convenient holder for 18650 cells. However it’s not designed for charging, and you have to take the 18650 batteries out of the case to charge them. It’s quite annoying so I decided to modify the case so that I can plug it straight into the charger for charging.
Buzzer can help you locate your crashed drone, but typically it won’t work if the battery is disconnected in the crash. Here we will show you how to build a DIY lost model alarm with its own little built-in battery.
During the latency testing on the Frsky X-Lite, we discovered some interesting results. There is delay in the gimbals, (how often the gimbal value is being updated), and additional delay caused by OpenTX’s sample averaging.
The differences between 2306 and 2207 mini quad motors are often discussed. In this article I will share my understanding and experience to help you pick a suitable motor size for your next quadcopter build.
We all know bigger FOV gives you “bigger screens”, but how much bigger? In this short post we are going to find out. I also made a handy tool to let you quickly compare the FOV between two sets of goggles side by side. It’s scary what a strong cup of coffee can do to you :D
More and more top pilots are posting cinematically edited long range FPV videos of mountain dives, flying across rivers or sweeping over villages. The sense of exploration in these videos is truly amazing, and reminds me of what got me interested in FPV in the beginning, to explore!
Does ND filter on GoPro cameras actually remove jello and make your FPV videos look more cinematic? We are going to find out in this post, and I will also explain what an ND filter is, and how ND filter affect GoPro image quality.