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Source code and circuit diagram for using heading information from a sensor for direction control of Free flight model FAI-Categorie F1E

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F1E

After the German championship 2021 in the aeromodelling category F1E with successful flights with new lightweight wings (build by Vchyaeslav Bolgov https://www.facebook.com/vabolgov ) I decided to renew my model strategy for F1E based on this experience. One main part of my thought was: which steering device I should use? All of my and Daniela’s models use multiple versions of steering and in also different professional conditions. My view about the fence to successful pilots let me understand, that for the design of my models a renew of the wing load should be one of the priorities. After some research I decided to build up my own steering. The specifications were:

• The magnetic field and the heading should be detected with an electronic sensor.

• The evaluation of the course deviation should be processed by a microprocessor (Arduino)

• The whole steering device should be exchangeable with the traditional magnet steering

• The steering should work standalone without the direct dependency from an electronical timer

• The steering should be prepared for an interface to an electronical timer

• The usage of the steering should be reduced only to one function, which define the flight direction and the trimming for flying straight ahead.

• The design should have the potential to be developed to an lightweight steering unit.

Due to my status of early retirement in May 2021, end of the main paragliding season in 2021, and the Corona restrictions I used the late autumn and beginning winter time 2021/2022 for the own electronical design. Now the first prototype is ready, and I am very satisfied about the result.

One of the most challenging issues was the choice of an appropriate magnetic sensor. I had a lot of unsuccessful attempts, but at least I found a very good alternate, which could calculate the needed heading without interferences from pitch and roll movements.

The research was very time-consuming, so I decided to make all details like the coding and the circuit diagram pubic via the github repository (https://github.com/Flugpaul/F1E ). As a former manager for knowledge management in a worldwide company I know that sharing knowledge is useful for the progress of development. With starting the first flight evaluations I will complete the content.

A short indroduction for the use of this steering you will find here: https://vimeo.com/663940238

Feel free to use, comment, add, discuss what I have designed. I would be happy about the feedback from the freeflight/F1E community. 😊

Thx for the support and motivation to Johannes Seren ("make it more professional from the beginning") and Thomas Seren ("include a PID-controller for a good damping")

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Source code and circuit diagram for using heading information from a sensor for direction control of Free flight model FAI-Categorie F1E

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