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Flip32 F4: what is where
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PWM, OneShot125 and Brushed motor protocol on an oscilloscope
When I’ve buoght an oscilloscope (cheap digital DSO201), I’ve decided it would be a good idea to see how different ESC protocols looks like from the signal point of view. Previously I’ve written few words about them, like which is the fastest as so on, but is there something “special” about them? Well, let’s find…
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Project Dualcopter – worklog #2
3 weeks after my first post on Project Dualcopter, it's time for small update. The plan was to install servos and control surfaces. Instead, I've done: Basic electrical wiring for motors and ESCs. They have power now and are ready to be connected to flight controller To level shelf (above propellers) designed to hold flight…
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ATtiny85 Light Sensor – I2C slave device
I love AVR ATtinyx5 series microcontrollers. They are cheap, easy to use, they can be programmed just like Arduinos and comparing to their size they offer great features. For example, they can be used as a remote analog to digital converters connected to a master device using an I2C bus. Background: A few years ago…
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BLHeli Configurator Preview
While BLHeli was the best what happened to ESCs since original SimonK firmware, BLHeli has one very serious flaw: BLHeliSuite works only on Windows operating system. Let's be honest here, this sucks. OK, one can use virtual machine and some people succeeded to run it using WINE (I failed) but those are not good solutions.…
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3D Printed 35deg camera stand for Runcam HD / Mobius
I have no idea how I was able to build drones before I've bought my 3D printer… I before I've learned basics of 3D design. So, today I present you upgraded version of my Runcam HD / Mobius camera mount I've designed few months ago. Changes: tilt angle increased from 25 to 35 degrees allows…
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Flip32 F4 / Airbot F4 : Pinout
There is very little reliable information about Flip32 F4 / Airbot F4 on the internet, so I’ve decided to fix it. Today, pinout map for Flip32 F4 (Betaflight 3.0.1) and some additional notes: Betaflight 3: use REVO target UART1 is only UART with inverters, so S.BUS can be connected only here S.BUS / PPM pin…
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PID looptime: why it is not only about frequency
Last 18 months was an extremely good period of time for all mini-quad enthusiasts. Progress, hardware and software both, was just incredible. Who could have guessed that in less than 2 years mini-quads will evolve into main group of drones with such excellent flight characteristics. Just take a look at looptime. When I entered the…
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Hand on: Flip32 F4 Flight Controller
Yesterday I’ve received new flight controller for my Reptile X4R 220 quadcopter: Flip32 F4 from ReadyToFlyQuads. This is my first contact with STM32F4 based flight controller and I’m really looking forward to see if it really puts a difference comparing to F3 boards like SPRacingF3 I’ve been using last few months. Some features: STM32F405 CPU…