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Technology & Calculator Open Topic
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Fallen Ghost
Elite
Joined: 15 Jun 2006
Posts: 955
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 Posted: 13 Mar 2007 08:24:07 pm Post subject: |
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My question is about hardware stuff, but for calcs and I/O devices, so I thought of posting here.
I'd like to do something like starting a switch using my calculator as timer. I'm able to transfer some electric signal from within an ASM program. Now I'm stuck at using the link cable itself.
I tried searching google and forums about how they work or any electric schemes of them, but all I've found is places where to buy them.
I'd like to know what metallic parts are signal output and signal input (black, white and ground if any) and what part I need to plug to another to make a "no-resistance and that does nothing" cable, for use in a solenoid/very very small electric rotative engine.
Thanks in advance!
Last edited by Guest on 13 Mar 2007 08:25:15 pm; edited 1 time in total |
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Arcane Wizard
`semi-hippie`
Super Elite (Last Title)
Joined: 02 Jun 2003
Posts: 8993
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benryves
Active Member
Joined: 23 Feb 2006
Posts: 564
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| Posted: 14 Mar 2007 05:54:23 am Post subject: |
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You have two data lines and one common (ground). On the physical connector, you have the "tip", "ring" and "base" - the base is common, the two other lines are for data.
Favouring active-low logic, they float high when 0, and are pulled low to signify a 1. If either device pulls a line low, both devices see it as a low, and it doesn't go back high until both devices release it.
You could probably get away with driving an LED directly out of the port, but you'd need some controlling circuitry if you want to drive motors or solenoids.
Take a look here for more information. |
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