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Old Nov 30, 2012, 05:04 PM
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flyinglog's Avatar
Deutschland, Berlin
Joined Aug 2011
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Arduino Based CL Timer for Speed

Hi Everyone !

I want to show you my DIY - Timer made of an Arduino Nano Board.

Still in development, but it already works a bit.
It is designed for Speed Applications, but with other software it would be possible to use it for everything else.

Flight time in the Video is shortened for testing.

The LED means :
Red - Akku connected
Yellow - initialising of the controller (blink) and accelerating or braking (steady)
Green - Full Throttle (steady) end of flight (blink)

Weight is 17g.

It is planned that the accelaration stops at a adjustable throttle to grab the speed pole and place the fork for a time.after that it will go to full throttle, like a reso would do after whipping. It is already programmed but yet not tested.

You can adjust :
amount of accelaration ( that you have a softer start)
Plateau time
Plateau speed ( plateau means the "reso" imitation)

It`s missing the start switch, have to buy one first. It is possible to connect it to the bellcrank as a shutoff.

Here is the link to the video :
F2G Fesselflug ElektroSpeed Timer auf Arduino Basis (0 min 51 sec)


Oh, battery was weak, so it didn`t reach top RPM`s.
Best regards and ever tight lines ,
Sebastian
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Old Nov 30, 2012, 09:14 PM
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coriolan's Avatar
Canada, BC, Vancouver
Joined Sep 2006
5,759 Posts
These flyers in Switzerland could use it!
Speed Elektro (0 min 40 sec)
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Old Dec 01, 2012, 03:34 PM
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Joined Mar 2007
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This looks really interesting. Do you have the code for it you would be willing to share?
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Old Dec 03, 2012, 10:19 AM
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flyinglog's Avatar
Deutschland, Berlin
Joined Aug 2011
149 Posts
Hi Everyone !

Here is the code.
Have much fun building !

It would be wise to add a additional switch to prevent the motor from accidental running.

The code is the Version with the "plateau" . It is now tested and runs fine.
Change the file extension from .txt to .ino, then it will work

Best Regards,
Sebastian
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Old Dec 03, 2012, 11:32 AM
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flyinglog's Avatar
Deutschland, Berlin
Joined Aug 2011
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Hello again.

Something went wrong with the text in the other File .
Please use the new one.
Just copy&paste it to the Arduino IDE.

Regards, Seb
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Old Jan 07, 2013, 11:15 AM
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flyinglog's Avatar
Deutschland, Berlin
Joined Aug 2011
149 Posts
Hello !

New Hardware update !

No potis anymore and just one RGB LED. But now i have extra a button to start the engine besides the Main switch. Main Switch also acts as a energy shutoff, when linked to the bellcrank.
Pen is for size comparison .. .. ?..
Now much better for installation.


Have to do the Software now.

Best Regards, Sebastian
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Last edited by flyinglog; Jan 07, 2013 at 11:24 AM.
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Old Jan 08, 2013, 10:01 AM
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United States, CA, Carson
Joined Dec 2012
24 Posts
Great stuff..

I am thinking to get C/L in electric as well...will update you guy when I am done with it..
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Old Jun 26, 2014, 03:50 PM
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mpoduje's Avatar
Santiago, Chile
Joined Mar 2005
33 Posts
Hello !!

I'm very interested in your arduino based timer, i want to develop my own timer for F2B.

I'm a a newbie in arduino projects, but i want to build my own timer and i will buy a arduino nano board.

I think your code is the same that i need to F2B timer.. i need to control the speed, the time and one switch to start. I think in other functions like a delay between the start button and start engine, in order to have time to run to the handle. Other function may be a signal before engine stop.

Thanks for your code, i will try to start.
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