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Author Topic: 737-800 Arduino X-Plane Build  (Read 76263 times)

Offline kurt-olsson

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Re: 737-800 Arduino X-Plane Build
« Reply #175 on: November 25, 2016, 01:31:30 PM »
Building is standing still, a newborn and no more time. But i am still collecting oem stuff for the future when i get more time.

Today i got some nice panels from my friend in Canada.


Offline kurt-olsson

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Re: 737-800 Arduino X-Plane Build
« Reply #176 on: January 03, 2017, 09:03:07 AM »
Circuit board will look like this + a mosfet to drive the backlight (todo)

Offline kurt-olsson

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Re: 737-800 Arduino X-Plane Build
« Reply #177 on: January 03, 2017, 09:16:54 AM »
Board connected to panel. Unfortunatly i could not remove the long metalbar, the oem screws are impossible to loose. Big problem i dont know how to solve yet.

I will use a 3-pin DIN contact on the back later.

I think this worked out pretty good.

Offline Trevor Hale

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Re: 737-800 Arduino X-Plane Build
« Reply #178 on: January 03, 2017, 09:25:28 AM »
Pretty Cool.  As for your issue with the seized screws.....  (Grinder works ha ha ha ) Just kidding.
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Offline kurt-olsson

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Re: 737-800 Arduino X-Plane Build
« Reply #179 on: January 03, 2017, 11:45:09 AM »
Pretty Cool.  As for your issue with the seized screws.....  (Grinder works ha ha ha ) Just kidding.

Thanks LOL! :)

Offline kurt-olsson

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Re: 737-800 Arduino X-Plane Build
« Reply #180 on: January 04, 2017, 03:03:24 PM »
Fmc face OEM arrived. Will be a challange to interface and also replace a broken exec button...

I know at least 3 bulbs are broken in the lightplate...

Not very good condition but hey! Its OEM!

Will fit a lcd screen in the back. If anyone know a 44pin connector that fits, let me know.

Offline paulnd

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737-800 Arduino X-Plane Build
« Reply #181 on: January 04, 2017, 06:18:44 PM »
Hi,

I now regret starting a similar project recently and have almost given up.

Perhaps your circuit board is in a better condition but the one which I bought had several of the foil domes which are the switch contacts broken or missing. These cannot be repaired or replaced and even one broken switch renders it pretty much useless.

I then had to design, etch and solder a replacement circuit board, I'm now using the 5th replacement board. Although the buttons close to the edges work, buttons in the centre don't due to flexing of the circuit board and I'm trying to find a way to make it more rigid and get the spacing between the buttons and circuit board and circuit board correct.

It is nevertheless interesting to see how the buttons are backlit as well as the general design of an OEM part.

I was also unable to find pinouts of the connector even with the assistance of experienced and knowledgeable forum members.

Paul


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Offline kurt-olsson

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Re: 737-800 Arduino X-Plane Build
« Reply #182 on: January 05, 2017, 04:17:28 AM »
Oops., that dont sound so good. :(

My plan is to:

1. See if i can just replace the exec button and interface via pins out.
2. Remove the circuit board and try to hook up the switches manually.
3. Remove all and even try to fit new buttons (or use the caps of the fmc). Maybe build custom backlighting if lightplate is broken (but dont think so)

I think my circuitboard is in pretty good shape but havent begun identifying pins with the multimeter yet.

How did you remove the circuitboard? Can this be done without braking it?

Usually the "homemade" stuff turns out bad and bying FDS would be better. But in my case i cant use FDS since i only use x-plane. Would like to see pins out on their plug n play. And this OEM cost me a 1/12 of their plug unit so i will at least give it a try.

Lets keep in contact if we find good progress. :)
« Last Edit: January 05, 2017, 04:21:20 AM by kurt-olsson »

Offline paulnd

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737-800 Arduino X-Plane Build
« Reply #183 on: January 05, 2017, 04:30:33 AM »
There are 2 circuit boards, the outermost is the backlight and the inner contains the membrane switches (I think that's the correct term). Both can be removed by undoing the tiny screws. Once the circuit boards are removed, you'll have the backlight "block" which is attached to the buttons.

Perhaps post a photo of the back to confirm that it's the same as mine.


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Offline kurt-olsson

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Re: 737-800 Arduino X-Plane Build
« Reply #184 on: January 05, 2017, 04:55:43 AM »
Photos coming, will have to go away today but post as soon as i come home later.

Thanks Paul!

Offline bernard S

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Re: 737-800 Arduino X-Plane Build
« Reply #185 on: January 05, 2017, 08:48:49 AM »
I am all for people using real parts ..so i will throw you a couple of bones to chew on.. you need the CMM  with IPL for this project .. here is publication number... C15-3641-044    pages 263-469 and pages 547- 1256 ..someone on here may have one they can share with you   have fun
« Last Edit: January 05, 2017, 08:59:21 AM by bernard S »

Offline kurt-olsson

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Re: 737-800 Arduino X-Plane Build
« Reply #186 on: January 05, 2017, 11:22:10 AM »
Thanks Bernard! I will see if i can make something out of it.
I took away the lightplate and was disappointed because i cannot use multimeters on the silver rails to identify the pins.

I would like to be able to remove the circuitboard and see how it looks.

If everything goes wrong i should be able to multiplex the buttons and still use the backlight.


Offline paulnd

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Re: 737-800 Arduino X-Plane Build
« Reply #187 on: January 05, 2017, 11:54:54 AM »
if you undo the screws on the front holding the EXEC frame and the 2 annunciators (MSG, FAIL etc) then you should be able to remove the membrane switch circuit board.

There is nothing then holding the buttons and backlight "block" in place so be careful if you turn it over once the circuit boards have been removed.

Offline kurt-olsson

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Re: 737-800 Arduino X-Plane Build
« Reply #188 on: January 05, 2017, 11:58:22 AM »
Thanks. maybe i will be able to see how things are connected...

It would be cool to do a custom circuitboard and still use the lightplate and buttons...

Offline kurt-olsson

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Re: 737-800 Arduino X-Plane Build
« Reply #189 on: January 05, 2017, 12:58:09 PM »
Removed evrything.
One thing i dont understand is why some buttons have white round caps at the bottom and some dont?

The broken button seems impossible to fix, will prob have to replace it... :(

Pheww lots of work when aligning the buttons to fit them back again...


Offline kurt-olsson

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Re: 737-800 Arduino X-Plane Build
« Reply #190 on: January 05, 2017, 01:26:06 PM »
Hm... this is going from bad to worse...

Fine fine mechanics in the oem stuff...

A small spring is holding up the plexi button-rod. Broken on the nr 4 button...

Even if i do some custom stuff, it must fit inside the fmc so i can close the lightplate...

Hm... i smell wasted money...

Offline jackpilot

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Re: 737-800 Arduino X-Plane Build
« Reply #191 on: January 05, 2017, 01:29:33 PM »
3D printing ?


Jack

Offline kurt-olsson

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Re: 737-800 Arduino X-Plane Build
« Reply #192 on: January 05, 2017, 01:41:49 PM »
Back with a plan!

I am down to my last alternative: manual cables and new micro pushbuttons.
I will replace the springs with actual bushbuttons!
That way i can still insert bulbs and use the original "glass-holders" and "caps"!

The exec button will be replaced and also a new potentiometer.

Really hope there is a lcd screen that is right size! Maybe i can use the lightplate or i will have to manually indert the bulb in the board.

Offline kurt-olsson

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Re: 737-800 Arduino X-Plane Build
« Reply #193 on: January 05, 2017, 02:07:45 PM »
Ok, so there are tiny pushbuttons on the pcb, the white circle caps should be on all buttons, how on earth did they disapperar? That is why only 50% of the buttons click and the others dont...

Wonder if i could order spring, caps and pushbuttons from boeing? Haha


Offline bernard S

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Re: 737-800 Arduino X-Plane Build
« Reply #194 on: January 05, 2017, 02:34:17 PM »
nope   not Boeing.. but from Honeywell .. i tried to tell you what docs to get before you went diving in ... thats why i said try to get either CMM or IPC or IPL  for this project ... for the cost of replacement bits ..best buy a complete CDU its not a FMC   ;)

Offline kurt-olsson

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Re: 737-800 Arduino X-Plane Build
« Reply #195 on: January 05, 2017, 02:42:45 PM »
nope   not Boeing.. but from Honeywell .. i tried to tell you what docs to get before you went diving in ... thats why i said try to get either CMM or IPC or IPL  for this project ... for the cost of replacement bits ..best buy a complete CDU its not a FMC   ;)

Those acronyms could as well be in greek language for me, dont understand any of them.
The CDU at swiss-sim is about 900$, i got this for about 150$ So there is lot to try before adding up to that price, but i do agree with you that it is best to buy complete stuff.

But i think i will actually get this to work! Some microswitches and new bulbs and a custom pcb should do the trick! :)

Offline Trevor Hale

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Re: 737-800 Arduino X-Plane Build
« Reply #196 on: January 05, 2017, 02:47:57 PM »
Can't wait to see you finish this.  "Don't let it beat you"   Unfortunately it will be loads of work though, but the reward will totally be worth it in the end.

Trev
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Offline kurt-olsson

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Re: 737-800 Arduino X-Plane Build
« Reply #197 on: January 05, 2017, 02:59:33 PM »
Can't wait to see you finish this.  "Don't let it beat you"   Unfortunately it will be loads of work though, but the reward will totally be worth it in the end.

Trev

Well, my mcp took about a year and 1000$ so this should be 6months 500$ haha

Offline bernard S

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Re: 737-800 Arduino X-Plane Build
« Reply #198 on: January 05, 2017, 03:03:49 PM »
fair enough ..irs a challenge for sure

Offline jackpilot

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Re: 737-800 Arduino X-Plane Build
« Reply #199 on: January 05, 2017, 03:22:29 PM »
... thats why i said try to get either CMM or IPC or IPL  for this project ...

Those acronyms could as well be in greek language for me, dont understand any of them.


Bernard, Kurt has a good point
Whenever you try to help, just remember that most if not all of us are not familiar with those acronyms....explain and translate..a much  better way to get it through!!
Thank you.
Jack


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