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

  1. #71
    Maximum Bitrate
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    step the voltage down with a vreg. LM317 or the like should do just fine. If anything, it will at least make your relay's last longer.

  2. #72
    Who am I? HiJackZX1's Avatar
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    I really couldnt believe that i did not notice the voltage diffrence, so now i have ordered the correct relays from this site http://www.futurlec.com/index.shtml. It all pretty cheap.

    PS: I also found the 12V version at radioshack, I have updated the picture with the correct model number.
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  3. #73
    Newbie jimmler's Avatar
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    Futurlec has great prices, but don't be in a hurry for the parts. The stuff ships from overseas. Singapore, I think.
    -Jim
    Nipomo, CA

  4. #74
    Who am I? HiJackZX1's Avatar
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    Quote Originally Posted by jimmler View Post
    Futurlec has great prices, but don't be in a hurry for the parts. The stuff ships from overseas. Singapore, I think.
    I was wondering why the shipping was 4.00 for 2 little relays, lol. I think Im just going to use the 5V relays till the 12v ones arrive.

    Hey wait...... they make solid state relays???????? Thats cool... nevermind, solid state relays seem to have issues....
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  5. #75
    Low Bitrate ContaiN's Avatar
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    I'm gonna give this a go myself probably this weekend, I'll let you know how it pans out. I'll be using 12v relays

  6. #76
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    Quote Originally Posted by ContaiN View Post
    I'm gonna give this a go myself probably this weekend, I'll let you know how it pans out. I'll be using 12v relays
    I tried to get the 12V relays from RadioShack but there so ghetto when it comes to their component stuff. Said they had 2, but when I went they had zero. So I ordered 2 from futurlec. The auto switch mod isnt at the top of the list, so the 2 week wait is ok. I did find a set of small little circuit boards at Radio Shack and thought they would be perfect to make a small auto switch device. Im also going to buy connectors to make it easy to install and uninstall to the screen and the Reverse 12v line.
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  7. #77
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    Been following this thread for a little bit, and looks like there's now a good (and simple) solution =). Will be using this in my install, but had one question for ya.

    What happens when you shift quickly through reverse? What I mean is that when you are parked somewhere, turn on the car, and shift directly into drive? Does the screen stay on the current input (i.e. PC), or does it flicker to the other input, then back to PC? Or...?

    Since you already have it all setup, do you mind testing it in case you havn't already?

  8. #78
    Who am I? HiJackZX1's Avatar
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    Quote Originally Posted by NotYou View Post
    Been following this thread for a little bit, and looks like there's now a good (and simple) solution =). Will be using this in my install, but had one question for ya.

    What happens when you shift quickly through reverse? What I mean is that when you are parked somewhere, turn on the car, and shift directly into drive? Does the screen stay on the current input (i.e. PC), or does it flicker to the other input, then back to PC? Or...?

    Since you already have it all setup, do you mind testing it in case you havn't already?
    Mine isnt set up yet in the car, infact the whole PC is still in the house having the bugs worked out. I will try it when I get it in. Now do you mean if you start the car in drive? If yes then it would stay on PC, then if you hit reverse it would go to reverse. Now if you mean shift super fast, I dont know, I would like to see how it reacts also, I say this because the capacitor keeps the relay powered for a certain amount of seconds, maybe even milaseconds..... Ill have to see.
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  9. #79
    Newbie jimmler's Avatar
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    I think the ultimate solution for this is to devise something around a PIC chip or BASIC stamp. There's too many possibilities for a set of relays to handle everything. To have the screen blip while going from Park to Drive would get annoying. I think the Reverse input needs to be solid for at least a second or two before the monitor should be allowed to view the camera signal. I've got a bunch of stuff on my plate right now, but I'm gonna look at trying this approach.
    I did manage to reverse engineer the switch circuit board for the EBY701. Everything on the board is 5v, so don't apply any 12v signals. The power switch has its own input to the processor board. It's pulled to 5v thru a 100 ohm chip resistor. The other 6 switches are split into two groups of three. Each group is pulled high by a separate 100 ohm resistor, but then they use a voltage divider scheme to tell the processor which switch has been pushed. It's kind of weird, but it obviously works.
    One other thing I noted that might be useful: The display will work with the switch board completely disconnected.

    I should probably take some time and post pictures of my EBY701 dissection and reassembly into its new home. It has turned out better than I had hoped for. Film at 11.
    -Jim
    Nipomo, CA

  10. #80
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    Quote Originally Posted by jimmler View Post
    I think the ultimate solution for this is to devise something around a PIC chip or BASIC stamp. There's too many possibilities for a set of relays to handle everything. To have the screen blip while going from Park to Drive would get annoying. I think the Reverse input needs to be solid for at least a second or two before the monitor should be allowed to view the camera signal. I've got a bunch of stuff on my plate right now, but I'm gonna look at trying this approach.
    I did manage to reverse engineer the switch circuit board for the EBY701. Everything on the board is 5v, so don't apply any 12v signals. The power switch has its own input to the processor board. It's pulled to 5v thru a 100 ohm chip resistor. The other 6 switches are split into two groups of three. Each group is pulled high by a separate 100 ohm resistor, but then they use a voltage divider scheme to tell the processor which switch has been pushed. It's kind of weird, but it obviously works.
    One other thing I noted that might be useful: The display will work with the switch board completely disconnected.

    I should probably take some time and post pictures of my EBY701 dissection and reassembly into its new home. It has turned out better than I had hoped for. Film at 11.
    If you read up in the post, we had some1 point to a PIC solutions and it had the same issues that can happen with the relays. The only way to really avoid these issues is to directly tie into the screens circiutry so that the PIC knows what mode the screen is on. This is wayyyyyyyyyyyy to much hassle. We want something fast and easy.
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