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I want to build an RF R/C on/off switch - seeking advice Answered


Hi all, I am trying to build a small device that would comprise of an RF receiver, a battery pack (for the receiver) and a circuit to remotely turn battery-powered toys on and off - to work with an r/c controller. I'm building some prop toys that I would like to turn on and off remotely - I've used servos hacked out of r/c cars to physically hit momentary switches before but now I am trying to reduce the size of the gadget I need to hide in the props. (The props often use 4 AA batteries to operate, if that helps?).

I would love to chat with someone who knows how to do this!!!

Greatly appreciated,

DAZU


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Kiteman (author)2011-09-11

You can get some small servos, but maybe you need "linear actuators" (like servos, but instead of going round and round, they go out and back)?

Have a look at ebay and google, but they are often also stocked by robotics parts suppliers.

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damianzuch (author)Kiteman2011-09-11

Kiteman - thanks! I am just now reading up on linear actuactors and taking a look online to see what best suits my purpose (ideally the finished product - battery pack, receiver and actuator - would be quite small and could discreetly fit inside the props, although I am intrigued by actuators that exert 110 lbs of force - but that would be for a different build!). Do you have any recommendations for a specific brand/model, etc of small actuator?

I will continue to look into this and thanks again for the advice!

DAZU

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Kiteman (author)damianzuch2011-09-11

I've no personal recommendations (I've never used one), so I would go with a known retailer or a perfect-feedback ebayer.

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damianzuch (author)Kiteman2011-09-11

Sensible! This next question then is for those Instructablers who have used linear actuators for micro operations: I need to source out a very small actuator that would be used to depress a momentary switch, so I don't need it to have a lot of force behind it (I've seen some of the 12V 110 lbs of force actuators online and I think they are too big and too powerful for what I'm going to use it for) - can anyone recommend/link to a very small actuator that can be powered by 4 AA batteries (the same batteries that power the receiver)?

Again, much appreciated!

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Kiteman (author)damianzuch2011-09-11

(I seem to recall hearing RC people mention RC relays - wouldn't they do the job in an even more compact unit?)

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