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Author Topic: Low Cost Open Source Control Line Timer  (Read 268 times)
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Nickel Member

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Canada Canada

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« on: October 10, 2019, 10:02:55 PM »

If you may have been interested in getting your feet wet in electric power but not sure of a source of a good basic timer.  Here is a "do-it-yourself" option called the Touch_and_Go.  I'm sharing my code for the timer so that you can easily program your own.  The hardware is a very small and lightweight Adafruit Trinket M0.  It costs $8.95US and is distributed by electronics vendors all over the world so it's very accessible. 

It really is easy to build.  There are 4 pins and one wire that need to be soldered for assembly.  The board is programmed by connecting via a USB cable and dragging and dropping the downloaded files.  It's dead simple and works like a charm.  If you want to change the code, that's easy too.

I put together a full set of instructions as a PDF file that can be found near the bottom of my web page.  The code can be downloaded from the button at the top of the page.  All the details are found here: https://circuitflyer.com

I hope some people give it a try.  Feel free to let me know what you think.

Copper Member

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« Reply #1 on: May 10, 2020, 06:14:57 AM »

Hey circuitflyer this looks really cool!

The commercial offerings feel a little outdated and pricey when you add the programming boxes.

I was planning on forking the blheli ESC firmware and hard coding the governor and delays but still wouldn’t have the capacitive touch programming and status led that your trinket based solution offers so I think I’ll give this a try instead.

Thanks for putting in the hard work, keep  it up!
Palladium Member

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Australia Australia

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« Reply #2 on: May 13, 2020, 05:42:54 AM »

Thanks Circuit Flyer - that is very generous of you!

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Malaysia Malaysia

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« Reply #3 on: May 22, 2020, 08:59:50 AM »

Thank you!

Tapio Linkosalo
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« Reply #4 on: May 23, 2020, 04:04:04 AM »

Looks interesting. I started immediately to think about a adding another servo signal, that way you could control motor/ESC and a actuator servo for a free flight electric model. I just wonder if there is a spare I/O pin for this? The extra connector could be placed next to the current (using 2-row header pin and connecting the GND and V+ pins parallel, and then jumping the servo signal with a jump wire from a free pin).
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