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How to print PLA on glass?
When I got my first 3D Printer (Malyan M150) and got into 3D printing I was surprised how consumer not-ready technology this is. Sticking, not sticking, overextrusion, underextrusion, Kepton, blue painters tape, clogged extruder… Over the time, at least, I was able to get the whole 3D Printing process somehow repeatable. I think one of…
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Detecting Cleanflight PID tuning issues with Blackbox: gyro noise
After a short brake, let’s return to Blackbox series with new entry: “How much gyro noise is too much?”. Almost all PID tuning tutorials states: reduce vibrations that affects gyroscope and accelerometer readouts. Yes, this true: any vibrations that appear during flight affects gyroscope and accelerometer readouts are bad and should be kept as low…
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How to tune PID I-term on a quadcopter
With this entry I want to initiate short series of articles showing how to tune multirotor / quadcopter PID controller. Let’s call it a continuation of Blackbox series, but this time I will not relay only on Blackbox data. Yes, I will show few examples how given scenarios looks on Blackbox logs, but all steps…
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Flight controller 30.5mm to 45mm mount adapter
Almost all “racing” MultiWii derivatives flight controllers like Naze32, SPRacingF3, CC3D or Sparky, besides the same CPU family (STM32) and ability to run Cleanflight, share the same form factor: 36x36mm size and 30.5mm hole spacing. That creates a small problem when mounting them to some bigger frames designed to fit APM, Pixhawk or MultiWii. They…
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How to reverse motor direction
You finished your build, you connect LiPo, power up flight controller, apply throttle (no propellers of course) and you see that one or motors are spinning in wrong direction. How to fix that? You can not do it, for example in Cleanflight Configurator. ESC communication protocol does not allow to change BLC motor direction. There…
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Which sensors drones use to fly?
Modern drones utilize many different sensors to archive flight. Some of them are required to fly, some are only optional and they can only improve flight performance. This entry will be a summary of those sensors, with short description and information how UAV utilizes data from them. Gyroscope Gyroscope, or shorter gyro, is the only…
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Cleanflight low pass filters part 2
Quite a lot things changed in the world of low pass filtering since my previous port on this topic was published. So, here is the updated guide to Cleanflight LPF filters: gyro_lpf gyro_lpf is the most important low pass filter for gyroscope readouts. First of all, it is not part of Cleanflight, but is done…
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How to cut Depron
Depron is an amazing material. Light, cheap, waterproof, easy to process and quite durable. Almost everything in RC world can be made from Depron. All one needs is imagination, glue and proper knife. Like I mentioned few times before, I’m cheap, so at the beginning of my adventure with Depron, I was choosing cheap modeling…
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Beitian BN-880 GPS 3D Printed Case
Beitian BN-880 (I’ve bought mine from Banggood) is an excellent, cheap and accurate Ublox NEO-M8N GPS module. I’m using it for last few months and I’m very happy with it. But is has one serious flaw: there are no cases/enclosures for it. So, in most applications it is naked. I’ve decided to fix that and…