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Documents Ben Heck’s Mechanical Television Part 1 Episode -- Episode 230
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  • Author Author: pchan
  • Date Created: 24 Mar 2016 8:27 PM Date Created
  • Last Updated Last Updated: 18 Mar 2016 8:24 AM
  • Views 1095 views
  • Likes 4 likes
  • Comments 6 comments
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Ben Heck’s Mechanical Television Part 1 Episode -- Episode 230

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In this episode Ben begins making a mechanical television using old records, a flash light, a drill motor and some Photoresistors.

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  • rouverius
    rouverius over 9 years ago

    Baird's process of image capture seems quite novel these days. I wonder why the photocells are not behind the lens and Nipkow disk; the equivalent to modern video camera. It is because the photocells would not be sensitive enough?

     

    As for the receiver, you might want to look into D.B Gardner's "Mirror-Screw" system. It seems to give a brighter and larger image than the Nipkow disk. There are strips of mirrors for each scan line incrementally fixed to the axis of a spinning motor. The signal light source goes through a narrow slit and is reflected by one of the strips of mirror spinning by. This means that the screen size is as wide as the mirror strips and should have a rather wide viewing angle.

     

    The only downside is that I don't have enough information to know if Baird's image encoding can be matched with Gardner's mirror-screw. But it would be interesting to see if it works.

     

    Anyway, here is a pretty interesting site about the different versions of mechanical televisions: http://www.televisionexperimenters.com/Links.html

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  • Former Member
    Former Member over 9 years ago

    Awesome. Eagerly waiting for part 2.

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  • Blacksheep32
    Blacksheep32 over 9 years ago

    Please, please, please make some sort of Max Headroom reference/image when finishing this project.

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  • kouruu
    kouruu over 9 years ago

    You see, I need to move closer to ya'll. I'd have crashed that Tetris Party I used to pop some good scores on that. real trick is to get a 4 line combo. and funny enough as random as it's supposed to be, Tetris always seemed to give you the pieces to do so if you interlocked them just right. Or at least in my case it did.

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  • DAB
    DAB over 9 years ago

    Another great episode.

     

    The mechanical TV idea is very cool, so I look forward to seeing you complete the build.

     

    DAB

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  • beacon_dave
    beacon_dave over 9 years ago

    An alternative to the Motorola Atrix dock might be the Livi Design 'Casetop' which has a 11.6" display with HDMI and MHL inputs.

    Casetop by Livi-design: Mobile Accessory Turns Phone Into Laptop | Innovative Computing Solutions

     

    Lilliput make 8", 9", 10" monitors with HDMI inputs.

    Lilliput Europe · FA1011-NP/C · 10 inch monitor with HDMI, DVI, VGA and composite video

     

    JVC make monitors in 15" and 17" with HDMI inputs however they are aimed at broadcast video and have HD-SDI inputs as well so are significantly more expensive.

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