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Very custom FPV quadcopter for my daughter
When few months ago my older daughter (10 years old) started to express interest in FPV quadcopters, I was both happy and concerned. Happy, since I would have someone to fly with. Concerned, since she has no idea how to fly, I do not have a quadcopter for her and there is a big chance…
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Gyroscope and filtering video tutorial – Episode 4
In this episode of “Gyroscope and filtering” I show you how to configure notch filters using Betaflight Configurator and INAV Configurator software. Previous episodes: Episode #1 Episode #2 Episode #3
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FS1000A and XY-MK-5V second range test
Two months ago, when I published first FS1000A and XY-MK-5V range test, I was little surprised that I was able to reach 315 meters of stable connection. And I was almost sure, that they can do more. Having some free time during my summer vacation, I've left transmitter on a towel and took a walk…
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How to connect APM Airspeed Sensor (Pitot Tube) to INAV
Recently released INAV 1.7.2 introduced new hardware support: analog airspeed sensors. I’ve written new but it is new only to INAV. Analog airspeed sensors aka APM Pitot Tubes aka Ardupilot Airspeed Meter and one the market for years. And they are cheap. By cheap, I mean below $30. And until recently they were usable only…
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VL53L0X Lidar is… disappointing
I just finished first test flights with laser rangefinder VL53L0X and well, I’m disappointed. Before I will show any data, let’s review test conditions: VL53L0X configured for Long range mode: 2m 8PM, obscured sky, no direct sunlight Over concrete And it looks like this: Solid readout ended at more less 80cm. Above that, valid readout…
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Project "Dropship glider" – introduction
When I saw this video from rctestflight I knew I will build something like that for myself. A voila, few months later it is done. Here is Dropship Glider. It is 29cm long with 20cm wingspan. Weights 97g AUW and has 21g/dm^2 wing loading. So, in theory, should glide. Somehow… If I got center of…
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GPS Racer: worklog #9 – double rangefinder setup
My GPS Racer is less and less fun project. For last few weeks it acts as sensor platform for my attempts to bring rangefinders and terrain following modes back to INAV. This time in a way that will work. Two weeks ago it was carrying HC-SR04 sonar (crappy device). Week ago it was carrying US-100…
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How to read PPM signal with Arduino?
More than a year a published a post called Generate PPM signal with Arduino. Today it's time for part two: How to read PPM signal with Arduino?. Strange thing: internet does not gives very useful information on this topic. Strange, right? Some links to pages that does it either very very wrong or in not…
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INAV jumped over the bench
Let’s say I have almost a good news about sonar support in INAV: yesterday I flew terrain following mode with experimental INAV code. And did not crashed when shooting video below. I did crashed next code version, but that is only a minor detail, right? When shooting that video I did not touched throttle stick.…