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How can I do that Answered

Hi I have a simple question for one of you guys but it is difficult one for me since I'm not exactly into electronics. I want to build an apparatus into my car to move a small monitor up and down - in principal like a DVD drive in a computer that opens (when the ignition is turned on) and close (when ignition is turned off). What do I need to do that?? Stepper motor - Servo motor- do I need a controller ? Or can I do this with relays ? Anything helpful -ideas- let me know.

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killerjackalope

11 years ago

You'd need a way of making it go out more than in, if you made a spring loaded apparatus where the motor pushes it out then the spring pulls it in when an always on solenoid is used to pull the latch out by turning on, if it's straight up and down then it's all quite simple..

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doka65killerjackalope

Reply 11 years ago

I'm not sure but doesn't a solenoid and the spring a more rapid movement ? It should go up and down smoothly.

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Goodhartdoka65

Reply 11 years ago

Hmm, somewhat like the motors used to raise and lower an antenna outside a car when the ignition is turned on? One small warning. If this car is recently dated enough to operate on a complex computer and sensors, electrical disturbances of added, non-SAE equipment, can potentially disrupt the operation of said computer(s).

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doka65Goodhart

Reply 11 years ago

no worries - build in 99 - but thanks the ECU is right where I want to build this. So I guess I will add some shielding - just in case.

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Goodhartdoka65

Reply 11 years ago

As long as it doesn't introduce "noise" into the wiring system, you should be ok.

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guyfrom7up

11 years ago

you mean like have a monitor in your dashboard the pops up? This is what you need to do. A servo motor would be best for this. So, you hook up the servo as the picture below The blue thing is the servo which turns a wheel. It's basically a crank (the black spots are pivots, of course you'd attach it to the back of the monitor) so when you turn on the servo the monitor goes up, when it goes into reverse the monitor goes down/ As for the wiring... well there's multiple ways, respond if you want me to type

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doka65guyfrom7up

Reply 11 years ago

BTW the lift is about 2.5" - 3" and I can use an old CD/DVD housing as my base.

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CameronSSguyfrom7up

Reply 11 years ago

A servomotor and wheel (or arm) takes a lot of room. Wouldn't it make more sense to use a rack-and-pinion, or an electromagnetic linear motor? Or, an even easier method-stick it on an old power window mechanism.

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doka65CameronSS

Reply 11 years ago

Thanks I thought about a this flip headlights but it is too big - I'll look into the power window mechanism.

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doka65guyfrom7up

Reply 11 years ago

yeah that looks ok for a simple mind like me :) what do I need to do

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guyfrom7updoka65

Reply 11 years ago

ok, to be quite honest I've never used servos before, but I think I can walk you through this, I need to know one thing first, can you read schematics?

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Kiteman

11 years ago

Small point - if the screen is not showing satnav or similar, it is illegal (in most countries) for the driver to be able to see the screen while the engine is running.

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doka65Kiteman

Reply 11 years ago

no nothing like that - actually a gage on a screen

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Kitemandoka65

Reply 11 years ago

Oh, like a speedometer or rev-counter? That's fine, as long as it's not a distraction. "Distraction" is poorly-defined, so you'd best ask an authority about the location of the screen. Over here, I'd check at an MOT station or ask a road policeman.