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Thread: EBY701 questions and opinions!!!!!!!!!

  1. #41
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    Quote Originally Posted by triath5147 View Post
    The PIC can recognise if the monitor is on or off, and it can recognise what state the monitor is in
    Well, for PIC to do that - it should be clear where to tap. How would you go about detecting if it's in VGA or AV1 mode? I have no idea. And if you know where to tap then maybe all this logic could be simplified.

    I think it's cheaper to get proper monitor

  2. #42
    Who am I? HiJackZX1's Avatar
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    LOL, I was really starting to think the same thing. I bought a 15inch VGA screen that was missing the VGA cable. Well after almost 3 months I finally got the cable, but as a gift they also sent me a hugeeeeeeee 10.2 rear view mirror screen that mounts on the rear view mirror. It has the reverse feature built in, but if I use this its simply going to show the cam all the time...... I have 4 other screen to show everything else.

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  3. #43
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    I don't have a lilliput, but I would think that soldering to the button board, and/or finding the right wire on the ribbon cable would not be that difficult. It may be easier to just get the screen with this built in, but you didn't, hence this thread. I don't think you should give up on it. I think the answer would be simple, but it seems to be getting over engineered. I still beleive the PIC would do all of it very simply, I also agree with Jimmler, that than if he sells it, people may blame him when they make a mistake. SO maybe don't sell it, but let people build it at their own risk. The reason this shouldn't die is because, the PIC circuit responsible for looking at numerous inputs and than firing a trigger could be used for more than your screen, and may have alot of other applications in the car. Like to power relays for linear motors to open lambo doors, or anything else people can think of.

  4. #44
    Who am I? HiJackZX1's Avatar
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    Quote Originally Posted by triath5147 View Post
    I don't have a lilliput, but I would think that soldering to the button board, and/or finding the right wire on the ribbon cable would not be that difficult. It may be easier to just get the screen with this built in, but you didn't, hence this thread. I don't think you should give up on it. I think the answer would be simple, but it seems to be getting over engineered. I still beleive the PIC would do all of it very simply, I also agree with Jimmler, that than if he sells it, people may blame him when they make a mistake. SO maybe don't sell it, but let people build it at their own risk. The reason this shouldn't die is because, the PIC circuit responsible for looking at numerous inputs and than firing a trigger could be used for more than your screen, and may have alot of other applications in the car. Like to power relays for linear motors to open lambo doors, or anything else people can think of.
    He's right, we shouldnt give up. Im going to I/M Robby, which created the PIC and board for the TPMS USB mod. The PIC for that seemed complicated, but this should be super easy. If I knew this stuff, I would have went that route. Triath, your right, I think we are over engineering it. You know what Im going to try to do, is open up the 10.2 screen I got (after all it was free, so if I break it, who cares), and see how its done. Maybe we can reverse engineer it.

    PS: I looked inside and its a single board with everything built in..... I think i'll wait for Robby to leave a comment in here. I messaged him.
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  5. #45
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    I already found schema with 2 relays and 1 capacitor which is very easy. It will do pulse on and pulse off which is good enough to "push" button.

    It won't cover all scenarios, but will work for simple reverse gear application

  6. #46
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    Quote Originally Posted by katit View Post
    I already found schema with 2 relays and 1 capacitor which is very easy. It will do pulse on and pulse off which is good enough to "push" button.

    It won't cover all scenarios, but will work for simple reverse gear application
    How does it work? Post it.
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  7. #47
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    Ok. Here is schema person on other forum designed (after 3 different ideas with microchips)..

    Capacitor value will specify pulses duration C(in Farads) = T(time needed in seconds) / R(resistance of relay coil)

    Two tiny 12V rated relays could be used

    It works like that. When voltage supplied - capacitor will charge and second relay will be activated. As soon as capacitor charged - relay will deactivate. When voltage removed - capacitor will discharge and activate second relay.

  8. #48
    Who am I? HiJackZX1's Avatar
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    Quote Originally Posted by katit View Post
    Ok. Here is schema person on other forum designed (after 3 different ideas with microchips)..

    Capacitor value will specify pulses duration C(in Farads) = T(time needed in seconds) / R(resistance of relay coil)

    Two tiny 12V rated relays could be used

    It works like that. When voltage supplied - capacitor will charge and second relay will be activated. As soon as capacitor charged - relay will deactivate. When voltage removed - capacitor will discharge and activate second relay.
    But the same thing can be accomplished with one relay, cant it, or is by using two it is avoiding the wierd issue were it turns all butons into PC/AV buttons?
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  9. #49
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    One relay will short those 2 wires on right permanently on +12 and then disconnect them when voltage removed. This will equal to you pressing "mode" button when going to reverse and holding it until you release button.

    This schema will make 2 pulses. One when voltage applied (those 2 right wires will be shortef for specified period like you push and release button) and then when voltage goes out - it will do that "push" again.

  10. #50
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    Hi to all,
    I've received an invitation to participate in this discussion by HiJack, and I've just finished to read all the posts.
    Perhaps this could be helpful http://www.freewebs.com/billymcbunter/
    _______________________________________
    Car installation 95% [■■■■■■■■■■■■■■■■■■■]
    Current project: Parking sensor USB interface

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