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how can I raise an arm(s) with a switch easily? Answered

REASON FOR QUESTION:  I would like to modify a Power Wheels with a pop up berf gun for my son.  So it would kind of be like a "raider" vehicle or weaponized dune buggy.   This is strictly in the theory stage.

WHAT I WANT:  I would like to have a switch on the dash that raises the nerf gun out of the front storage compartment, or rotates it out of a cavity, or something like that, and then wire a momentary switch to either the dash, steering wheel, or horn that activates the "Battery operated Nerf". 

WHAT I KNOW: Unfortunately I have no working knowledge of arduino or coding.  I would like to learn, but dont know where to start.  I do no electronics, and R/C.  Wiring the momentary switch to the "Nerf gun" should be no issue,  its how to "arm" it (for lack of a better term) that i dont know.
      I was thinking that i could use a high torque servo, but I dont know how to wire it up to a switch, if thats even possible.  I then thought about a stepper motor, but again, i dont know how, and that route seems costly.
    Fabricating brackets, arms, hinges, all easy.  CAN SOMEONE PLEASE HELP ME FIGURE OUT A WAY TO MAKE THIS POSSIBLE?  AND DUMB IT DOWN FOR ME AS WELL.  here are some concept pictures I was thinking of. and a few pictures of the tentative vehicle and Nerf choices.   the front of the vehicle has a storage compartment that should fit a smaller nerf easily.  I would just make a new split door for it, that would open up when the gun was armed.  that would be done easily with servos, if their was a way to.  at this point i might just make a roll cage to mount the VULCAN chain gun on and call it a day.  or hack a rc remote, but id rather not. ANY IDEAS?

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bwrussell
bwrussell

8 years ago

Try and simplify it. Instead of powering the lifting mechanism using electronics simply use springs. A simple switch controlled door release should be easy to do and shouldn't require a microcontroller.
A battery is wired to a momentary switch which is hooked to a small electronic latch (typically these are electromagnetic, when current is applied they unlock). When the button is pressed the latch unlocks and the springloaded forces the door(s) open and the gun pops out. Wire a switch in place of the trigger and you're good to go.

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supramp
supramp

Answer 8 years ago

do you mean something like this

!B9i29V!EGk~$(KGrHqUOKj8EzYVfgwz-BM6IHPNKO!~~0_12.JPG
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bwrussell
bwrussell

Answer 8 years ago

Yeah, something along those lines. It should be locked when there is no power.

Changing track mid post i think a normal latch (the side you show in your picture) and a powered receiver might work better. That way when it was time to put the gun back in it would simply push back in by hand without needing to activate the circuit.

You can buy miniature electromagnetic actuators if you wanted to come up with variation that works better for your application.

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supramp
supramp

Answer 8 years ago

thats kind of why i was looking at this 12V activated drawer lock. that way my son could close it by hand.

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iceng
iceng

Answer 8 years ago

+1

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mpilchfamily
mpilchfamily

8 years ago

Look into using an Arduino to control a pair of servo motors. You'll probably want 2 servos per gun mount. There are a great many projects and examples that will show you how to use the Arduino to control the servos.

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supramp
supramp

Answer 8 years ago

I really dont want to have to buy the kits, and learn it all, just to do one thing. i mean the knowledge gained would be useful in other areas, but its a lot for what i'm trying to do. unless i'm off base