Thread: PWM(S-BUS)+LANC+DC12V BMMCC Angle Breakout Expansion Box Module by RADIOPROEKTOR

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  1. #101  
    Senior Member shijan's Avatar
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    Got the boxes from 3Dprint lab today. They delayed for a week.

    IMG_3798.jpg
    Last edited by shijan; 04-03-2017 at 01:52 PM.
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  2. #102  
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    Shijan, had a thought the other night. To use the 1/8-inch TRS with a SBus controller, you will really need a four-conductor connection so you can add the 5-VDC tap on the db15 to power the SBus remote. So a TRRS connector is going to be needed, to use this with one of Kim's remotes, or something similar. As an alternative, Kim worked out one of his remotes to run of the LANC power tap, so you could use it with a 3-pin TRS connector for a dual csble connection to a SBus remote. For PMW, TRS will work fine. Just some added thoughts.
    Cheers
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  3. #103  
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    thanks for the info!

    could you also give me the dims on just the box?
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  4. #104  
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    Quote Originally Posted by Denny Smith View Post
    Shijan, had a thought the other night. To use the 1/8-inch TRS with a SBus controller, you will really need a four-conductor connection so you can add the 5-VDC tap on the db15 to power the SBus remote. So a TRRS connector is going to be needed, to use this with one of Kim's remotes, or something similar. As an alternative, Kim worked out one of his remotes to run of the LANC power tap, so you could use it with a 3-pin TRS connector for a dual csble connection to a SBus remote. For PMW, TRS will work fine. Just some added thoughts.
    Cheers
    can't the sbus signal and the +5v power use a common ground though?
    or is there some issue with that?

    that's what I have done with all my arduino experiments anyway - ie so you only need 3 connections - ground, +5v and sbus signal... though I am a dabbler and wouldn't claim to be an electrical engineer by any stretch so I could be doing something potentially dodgy there

    think that's what Shijan specified before?
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  5. #105  
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    Good question, not sure. Looking at eye camera manual, power connections in and out are using pin 1 ground, while the SBus and PWM data are using pin 3 as a common signal ground connection. LANC has its own ground pin also, pin 11. Not not sure if pins 1, 3 and 11 are a common ground or if power ground is available on pin 3. When I set up a custom cable I made, I used pin 1 for power in ground and pin 11 as the LANC ground (Steve connection). I know Phil used pin 3 for PWM control with his first remote. Not sure how Kim has his wired, I didn't take it apart to look.
    Cheers
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  6. #106  
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    on the arduino side its all common ground anyway so not sure what difference having separate ones on the camera would make
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  7. #107  
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    Probably none then. It was just a late night thought and resulting question.
    Thanks
    Cheers
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  8. #108  
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    thats ok - often I'm wrong
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  9. #109  
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    There are few ground pins in S-BUS expansion but they are just connected all together. Ground is common for any type of connector. There is no special separate ground for S.Bus or LANC or DC power. S.Bus with power needs only 3 pins connector.

    S.Bus power (tip) [BLUE]
    S.Bus signal (ring) [GREEN]
    S.Bus ground (sleeve) [WHITE]
    LANC signal (tip) [YELLOW]
    LANC power (ring) [ORANGE]
    LANC ground (sleeve) [GREY]
    Power +12V DC (center pin) [RED]
    Power ground [BLACK]

    Probably for request in future it is possible to put 4 pin 3.5mm jack, this gives you 3x PWM or S.Bus with power+1xPWM in one cable. But is kind of rare and hard to find socket connector and cables.
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  10. #110  
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    Thanks for clearing this up guys.
    Cheers
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