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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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Bye bye Naze, we will not miss you that much
I have a news for all INAV pilots using Naze32, Flip32 and other boards compatible with NAZE target. You might call it a bad news, but reality is that it is not that bad and was long anticipated. It is official: INAV 1.7.2 was the last INAV release with NAZE target. That means the following:…
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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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Large wooden BiCopter
You just know a great project when you see one. Like, for example, large BiCopter made from wood and running INAV and flight controller software that kermets has built.BiCopters might look strange, but the idea is quite simple. Instead of 4 motors, we have 2 motors and 2 servos tilting the motors. Like a one…
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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.…
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If not HC-SR04 then what? US-100 maybe….
A week ago I wrote that HC-SR04 ultrasonic rangefinder is crap and it is still true. Only around 1m useful range and very jumpy behavior above are at least problematic… There is a better solution. US-100 ultrasonic rangefinder. Comparing to HC-SR04, it has at least twice the useful range. My preliminary tests gave solid readout…