Add two switches to the Devo 7e

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15 Feb 2014 19:13 #20320 by Jman841
Replied by Jman841 on topic Add two switches to the Devo 7e
This may be a silly question, but, if wanting to add only a 2 position switch, are the diodes still needed? I do not know much about diodes or what sizes to get and would prefer to just solder the switch on if it is not needed for a 2 position.

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15 Feb 2014 19:43 #20324 by ZOOCOCO
Replied by ZOOCOCO on topic Add two switches to the Devo 7e
Perhaps you can try it without diodes and tell us if it work.
The diodes is 1N4001 said in the first page with pictures of wiring but any diodes should work.

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15 Feb 2014 20:15 #20327 by PhracturedBlue
Replied by PhracturedBlue on topic Add two switches to the Devo 7e
yes the diode is needed regardless.
I made a previous statement that they aren't but I was wrong.

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16 Feb 2014 17:57 #20380 by Jman841
Replied by Jman841 on topic Add two switches to the Devo 7e
ok thank you! Guess I will be learning how to solder diodes today.

Just out of curiosity, what is it needed? Isn't the switch just completing a circuit?

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16 Feb 2014 18:31 #20385 by ZOOCOCO
Replied by ZOOCOCO on topic Add two switches to the Devo 7e
Quote from the first page: "Solder a diode to the top contact of both switches. Pay attention to the direction of the diodes. Different doide types have different appearance. The one I am using is a low voltage rectifier 1N4001 but whatever diode type should also works. The point is to make sure current is flowing from the Yelow/Orange to the Red wire."

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16 Feb 2014 20:00 #20394 by PhracturedBlue
Replied by PhracturedBlue on topic Add two switches to the Devo 7e

Jman841 wrote: ok thank you! Guess I will be learning how to solder diodes today.

Just out of curiosity, what is it needed? Isn't the switch just completing a circuit?


In the switch mod what you are doing is making adding a switch that looks like a button. To save wiring, the buttons are actually wired together in a grid (much like your keyboard) to allow a few wires to detect many more buttons. The downside of this, is that there are many cases where holding multiple buttons simultaneously can't be detected. Since we're treating a switch like a button, it is as if we are holding it down forever. This would prevent other buttons from being detected if the diode wasn't there.
The diode only allows current to flow in one direction. This allows us to read the buttons in one direction and the switches in the opposite direction. Basically it means activating a switch doesn't affect our ability to read the buttons.

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17 Feb 2014 00:13 #20411 by Jman841
Replied by Jman841 on topic Add two switches to the Devo 7e
Wow awesome, thank you for the explanation!

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17 Feb 2014 06:54 #20430 by cocozozo
Replied by cocozozo on topic Add two switches to the Devo 7e
Hi everyone.

First post please be gentle.

I have just flashed my devo 7e to deviation 4.0.1 and am looking add an extra switch.

All i'm am after is one extra switch for fmode (3 way) ie. have normal mode, ST-1 and ST-2 (e.g. using Tom Zadars Mini CP settings).

Is kaworu method below the best way to wire up the switch?
Are only 2 diodes needed? (my electrical know how is minimal).

www.deviationtx.com/forum/how-to/1436-ad...vo-7e?start=40#11635

Lastly, how do i patch the firmware?? Are there some beginner guides?

Cheers

G

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17 Feb 2014 13:55 - 17 Feb 2014 13:56 #20441 by PhracturedBlue
Replied by PhracturedBlue on topic Add two switches to the Devo 7e
Yes you can follow those instructions. Note that if you ever want a 2nd switch you will need to rewire the 1st one since the "two 3-way switch" mod is different than the "one 3-way switch" mod. These days the best option is to use a nightly build. Then you do not need to patch the firmware at all, and can instead just edit the hardware.ini file.
Last edit: 17 Feb 2014 13:56 by PhracturedBlue.

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18 Feb 2014 02:50 #20500 by cocozozo
Replied by cocozozo on topic Add two switches to the Devo 7e
Thanks PhracturedBlue for the explanation. Will stick with 1x 3 way switch.

Much appreciated...

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18 Feb 2014 06:03 #20511 by Jman841
Replied by Jman841 on topic Add two switches to the Devo 7e
Ok, I got the firmware working so I have the option to add the switch but when I add SWA and SWB they are not working. I will recheck my hardware connections.

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18 Feb 2014 06:41 #20515 by Jman841
Replied by Jman841 on topic Add two switches to the Devo 7e
Ok I am stumped. I did the hardware mod, double checked it and looks good. Installed newest nightly build of deviation and did the DFU update. Tested the switches and I see them in the firmware but they do not actually work.

Here's some pics of my hardware mod. Please let me know if you see anything wrong.
Attachments:

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18 Feb 2014 07:00 #20516 by Jman841
Replied by Jman841 on topic Add two switches to the Devo 7e
After staring at this for way to long I see the problem! i soldered the "Red" wire on the wrong pinion. darn!

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18 Feb 2014 07:17 #20517 by Jman841
Replied by Jman841 on topic Add two switches to the Devo 7e
ripped it apart quick and changed it... works now! no better feeling than having something go wrong and then figuring it out and fixing it!

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19 Feb 2014 05:34 #20568 by Jman841
Replied by Jman841 on topic Add two switches to the Devo 7e
Now that I have the extra switches. How do I add a "Idle up 2" to use with the switches?

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19 Feb 2014 07:46 #20573 by HappyHarry
Replied by HappyHarry on topic Add two switches to the Devo 7e
change your fmode switch to swa or swb and the extra fmode will be available

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19 Feb 2014 18:39 #20594 by Jman841
Replied by Jman841 on topic Add two switches to the Devo 7e
Figured it out, I was trying to use the Simple GUI to do it. I don't believe the Simple GUI allows for it. With the advanced GUI it was simple, just had to read how to use it.

this is a little off topic but what is Channel 5 used for? 1-4 is stick inputs, 6 is pitch, i'm confused as to what 5 is.

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19 Feb 2014 19:29 #20601 by HappyHarry
Replied by HappyHarry on topic Add two switches to the Devo 7e
the standard GUI also allows it, go into the 'switch assignment' menu, then change 'fly mode' to SW A or SW B (depending on which switch you want to use as your fmode switch) then press the 'ent' key to confirm the change.

ch5 is usually for gear or gyro gain

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19 Feb 2014 19:53 #20602 by suzali
Replied by suzali on topic Add two switches to the Devo 7e

Jman841 wrote: With the advanced GUI it was simple, just had to read how to use it.


Where did you read. I can't find a documentation. Tried a few searches, but without success. Maybe someone can give me hint, where to look, please.

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20 Feb 2014 04:42 - 20 Feb 2014 04:42 #20634 by Jman841
Replied by Jman841 on topic Add two switches to the Devo 7e

HappyHarry wrote: the standard GUI also allows it, go into the 'switch assignment' menu, then change 'fly mode' to SW A or SW B (depending on which switch you want to use as your fmode switch) then press the 'ent' key to confirm the change.

ch5 is usually for gear or gyro gain


Yes it allows you to change it for one of the inputs, however, it does not allow me to make a completely second switch for that channel. So I can't run 80% throttle on SWa and 100% throttle on FMODE.

With advanced GUI i can.

You can find the instructions under "User Manual" on the left side of this screen. I recommend reading the entire thing. Very well written and informative!

Thank you PB!
Last edit: 20 Feb 2014 04:42 by Jman841.

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