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  1. #1
    1000+ Poster - Fantastic Contributor
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    Need some help on the Leo Bodnar Joystick Controller

    Hi people!

    Newbie here so be easy on me lol, its a new world sim building lol !

    Very serious about purchasing a Precision Joystick Controller BU0836 from Leo Bodnar, i need to wire up 12 simple push buttons and 3 throttle levers.

    Firstly, im finding it VERY hard to find a 100mm 100k Linear Slider Pot for my throttles (i need 3 of them) in UK, firstly, i know i can get a 60mm version, will the 60mm version be ok as a substitute? and does it really need to be a 100k pot or will 50k or 10k be ok?

    Secondly, how do you wire up buttons to the interface card, i know that you can wire each pin of your push button to each pin on the ROW/COLUMNS input on the card and then wire the 2nd pin of each switch in series to GND, then you will have a total of 12 switches (maximum limit), IF i was later on to add more buttons then i know i can do this if i switch to the MATRIX MODE and have upto 32 buttons + hat switch (4), HOW DO YOU WIRE A MATRIX???

    Is this how you wire it?

    Column 1 > Switch > Row 1
    Column 1 > Switch > Row 2
    Column 1 > Switch > Row 3
    Column 1 > Switch > Row 4
    Column 1 > Switch > Row 5
    Column 1 > Switch > Row 6
    Column 2 > Switch > Row 1
    Column 2 > Switch > Row 2
    Column 2 > Switch > Row 3
    Column 2 > Switch > Row 4
    Column 2 > Switch > Row 5
    Column 2 > Switch > Row 6

    etc, etc until

    Column 6 > Switch > Row 6

    Im pretty certain that im right but im just double checking, im sure you guys must have loads of experience in the bag!

    How have you wired your matrix (if you have done)?

    Sorry to be a real pain, and i really appreciate any help you can offer!

    Cheers fellow sim builders!

    Alex J

  2. #2
    25+ Posting Member jonnydaz53's Avatar
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    hi alex havent got an answer from you .. but can i ask what part of essex are you from as im from essex too. !

    regards john d

  3. #3
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    50K or 10K pots will be OK with this, but where have you looked? try CPC on the web or maplin for starters......

    The matrix is as you describe, BUT, it needs diodes in there as well afaik.

    the BU0836X does away with diodes but may not do what you require. I have one but have had little time to play with it but do know it skips encoders when turned moderately fast (eg altitude and heading changes). otherwise it's good.

    Skywatch

  4. #4
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    Hi there,

    John D: Im from sunny Basildon Lol !

    You ask where have i looked for pots? Answer to that is where havent i looked? Ive looked Everywhere on the web both searched through google, yahoo, msn etc, the only 100k slider pots ive seen so far are all the 60mm versions OR 100mm version but for audio which is anoying, i dare anyone as a mission to find a 100mm 100k linear slide pots and pref from UK, ive looked in maplins but they only have the miniture version!ebay brings a few up but again the 60mm version, there are tons of 100mm 100k sliders on ebay but they are ALL audio versions, need a linear version, i heard ALPS are good but try finding one? i mean i have looked and searched hi and low and cannot find one anywhere.

    Also can anyone confirm how to wire up buttons in simple mode to the controller.

    I am using simple push buttons, non latching as in the same type of button on a door bell, i thought you didnt need diodes to do this in simple mode also i only need 12 buttons (all simple non latching push buttons, just straight forward on/off switch)

    i wont need diodes will i in simple mode?

  5. #5
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    will any of these do?

    http://cpc.farnell.com/variable-sliding

    Skywatch

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  7. #6
    1000+ Poster - Fantastic Contributor
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    Hi skywatch

    This is the best im going to get i recon, so thanks for the site, massive help!

    What would be better the 10, 50 or 100k?

    And will it matter that much choosing a 60mm instead of a 100mm?

    Thanks

    Alex

  8. #7
    25+ Posting Member jonnydaz53's Avatar
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    benfleet here !


    john d

  9. #8
    300+ Forum Addict jmig's Avatar
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    Quote Originally Posted by alexpilot2008 View Post
    Hi skywatch

    This is the best im going to get i recon, so thanks for the site, massive help!

    What would be better the 10, 50 or 100k?

    And will it matter that much choosing a 60mm instead of a 100mm?

    Thanks

    Alex
    I bought some 100mm 10K Bourns slide pots from Mouser just recently. Look for part number 652-PTF01-152A-103B2. If you want single track the part number is 652-PTF01-152B-103B2.

    I am using them with a BU0836X from Leo. They work well.
    John

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  11. #9
    500+ This must be a daytime job ian@737ng.co.uk's Avatar
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    hello alex......

    just reading your post........
    this is not difficult at all. if you purely want to connect only 12 switches, you do not need to get into this matrix thing. all you need to do is connect your switches to the 6 rows and the 6 columns (one side) and to any of the Potentiometer Ground connections on the other side. No need to use diodes on an installation like this.
    have a look here http://www.leobodnar.com/products/BU0836/
    there's a diagram down the page on the right.
    if you want to build a matrix later, then here's a little document which may help you.
    http://www.737ng.co.uk/usbkeysconnections.pdf
    this is how i used to use the Opencockpits USBKeys card. i also used to use this method with the BU0836 cards as well, but i've now exchanged all the standard boards for the X version which has done away with all the matrix boards.
    secondly, you're in essex. have a look at this:
    http://www.rapidonline.com/Electroni...iometers/65234
    this is a company called Rapid Electronics. i get the vast majority of my bits from them. and as a bonus, they're not far from you. chelmsford i believe. they have a trade counter, so you can go and pick up what you need.
    hope that helps you out.
    have a great day.
    regards from wales..... ian
    Mr. Ian. P. Sissons is hereby recognised as an Honorary Flight Sim Captain following his passing in February 2016. This is in recognition for his commitment to Flight Simulation.

    www.mycockpit.org Featured Builder August 2008 www.737ng.co.uk
    FS9/PROSIM737/CPFLIGHT/Lots of BU0836X's and a Beer Fridge

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  13. #10
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    Quote Originally Posted by alexpilot2008 View Post
    Hi skywatch
    And will it matter that much choosing a 60mm instead of a 100mm?
    Thanks
    Alex
    that depends on what you need in terms of travel. If 60mm is not enough you could always have some sort of lever arrangement to 'gear' the ratio of travel of the pot to the throw of the control you want to use.
    I would suggest a prototype to test with first and then onto the real construction when you are happy about how you are going to do it.

    Skywatch

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