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Thread: Home-Cheap plc, ladder logic, Parallel port controls for model train set....

  1. #1
    Join Date
    Dec 2005
    Posts
    4,448

    Post Home-Cheap plc, ladder logic, Parallel port controls for model train set....

    My buddy of 30 some odd years has a request. He is building a model trainset and wants a cheapie controller. This has other uses like running a background control on a cnc machine running from the ports or HOME automation.

    A Visual-plc that runs the parallel port, you program in bit-relationship values, coils for the output ports on a parallel port. It will program in if{Normally open} contacts, NOT{normally closed} AND, dual bits, and have coils displayed on screen, inputs displayed on screen, and a Drum timer or motorized ratchet relay running from a "list box".. Timers can be installed to be configured also by time base and enabled by contacts. THIS can run in multi-tasking in the background from another windows program. BUT subject to "not in focus" timer variations of milleseconds". (can't run stepper or accelleration loops)

    Anyone that can draw a rung of electrical diagram could understand and control about anything with this 12 output, 4 inputs control. External connections would be anything you can fire 5vttl to turn on "whatever" you want. be it christmas lights or a model trainset or a cnc tool changer logic.

    Does anyone else need a copy of that in exe windows format?

    What I need? somebody to build me a temperature to 5vdc convertor cheap. I got a solar collector application I need to complete.
    Excuse me, I farted.

  2. #2
    BillH Guest

    Post

    David, what you need is an Atmel butterfly evaluation board for 20$. Has a built in temperature sensor that spits out the temp in hex, however the atmel chip on it is fully programmable and has a couple of Analog to digital and digital to analog features.
    Look into it.

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