This video demonstrates how to transform a classic magic prop into a mechanical animated effect using electronic components including a rechargeable battery, buck converter, microcontroller, H-bridge circuit, sensors, and a blower mechanism. The system uses sensors to detect lid position and trigger automated movements, creating the illusion of a living creature inside the chest that can spit confetti and tear paper. The key engineering principles include sensor placement for lid detection, voltage regulation for different components, and timing-based control for sequential animations.
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From Simple Magic Trick to Mechanical Puppet IllusionAjouté :
Hello, Randy Rain here, and this is a magic prop. Now, if you want to learn magic secrets, go read a book. That's what I did. I don't give away magic secrets. But, this is a prop that I need to update, and I want to show you. Now, what this does is basically vanish or appear something. Mainly used for appearing. And it's a chest, usually.
It's different kinds of chest. This is my chest. It could be an old chest, or like a treasure chest or something like that. But, anyway, what you do is you tip it over, and you can show the inside of it like this.
And you can see that there's nothing inside of the chest.
Like that.
And you can bring it up like this.
>> [snorts] >> And you do a little bit of magic, and when you open it up, you can reach in, and you know, and pull out a nice little silk, and that magical.
And a little more magic. Look, you can uh pull out another magic silk, a bigger one that's that's got something on it. Look, you can reach in and you can pull out Oh, look at this.
And it's a little bit of a antibiotic bacteria stuff here. All right.
See what else? Oh, look, you can uh I need this now. So, you you can pull out a little rabbit, of course. A little rabbit.
And then uh look at this. See here.
You can pull out a squirrel as well.
Now, this one I have modified, and I make it where it spits up basically confetti, torn pieces of paper.
The spring puppet is supposed to be the one tearing up the pieces of paper. Then I pull pieces of paper out that's been cut up and it reveals something. Maybe their card that they picked or just some little decorative thing like little cutout paper strips or something.
That's what it does. But I always wanted it to have more. It just seems like it needs more. And I always wanted the lid to pop up and down. But that's always been easier said than done because of the way it works. But I finally figured it out. So let me show you. Here's what I have. A rechargeable 9.6 volt battery, a connector for it. This is a buck converter and from 9 volts it can be dropped down to like 5 volts. This is my little program chip here, little circuit that I made using the CNC machine. Also have an H bridge circuit. That's for controlling the motor. And I have three little sensors. And there's also this blower here to blow the confetti. That's what this transistor here is for which I'm going to have to run a wire because it doesn't get this. It's going to get the full 9.6 volts.
I have a little bug crawling by.
The hell's that?
Any idea what that is?
>> These sensors have to go here to detect this part. And so, one of them has to be at the very bottom. So, I'm going to move this down.
It'll go there.
So, now I need to raise it up so it's just touching the lid.
This sensor needs to go right at the bottom of that so that going past it pushes the lid up, and then coming down onto it, the lid is closed.
So, that one should be clear of that one.
There, that's the final ones there.
Okay, here's the little chip that I programmed.
All right, it's time to test.
When I plug this battery in, if this thing goes down, we're good. If it starts going up, I need to flip this thing.
Let's see what it does.
Oh, that's right.
Is that far enough?
Let's see.
This is the switch.
There's a timer.
Yeah, I don't think that's happening.
All right, I figured out my problems.
There were several, but mainly I had to bump these out.
And this is in parallel with this, so down here is bumped out more than down here. So, I had to 3D print little pieces for that. So, if I plug it in and then do the same thing as pushing the button, it waits 7 seconds.
And now it's reset to do it again. So, yeah, it's going to comes up, it moves back and forth over this one to move that lid up and down, pauses, and then goes all the way up to keep it open, then go down. The timing and stuff like that isn't correct right now. So, you can see that's working pretty good.
So, when this last one is triggered and this thing goes past it, it's going to go negative, which will turn this on.
That means this part will go negative. I don't know why I put a red thing on there, but I did. This needs to go to there, and then the other side needs to go straight to the battery.
So, all right, let's see if it Here we Yeah.
I ain't right.
All right, so that was wrong and I had to change everything and I have finally got it.
This is not even the second one. This is like the third one.
And I even had to take some stuff off and got it wrong.
I added another buck converter.
Then I added the 12-V battery for this.
Go ahead and screw this in.
Now, I still don't have the timing on the programming of the chip yet.
That's still off. Still need a button.
You can plug her in.
All right, here's a fun thing. I used this little setup to make electricity sound with the fake medical device that I refurbished a while back. Now, it's going to be used to make a animal sound.
And this is just a little vibrating motor and I'll just turn that motor and just let it bounce around inside there.
I wanted to activate every time it gets past the second one.
So, as long as it's above the second one, it needs to be on. All right, I've created another one of these things. And you can see that I did not plan any of this out. This was all done on the fly.
Had no idea where I was going when I started this thing. But here, it's simple. It's another buffer with a transistor.
But that inverts cuz it's just an inverter. So, I had to put another inverter, put the data back like I had it.
And then there's another switch here to turn on this motor.
Just like this thing with the fan.
So, it's essentially the same circuit.
And it sure is getting messy back here.
And go in there.
I'm going to go with this little lever switch. Mainly because that's all I have. It's the only normally open switch I have. And I'm not buying anything for this. This is all made out of stuff I had.
All right. Now, here's the little rack that goes up and down.
I have a little piece here.
I should be able to screw it in here.
And now I have a piece of fur.
I'm going to use some double stick tape.
Now, it's real easy to install.
You just have to turn it on.
And since this sensor is not being covered up, it's going to turn it on to make it go down.
It's going to turn everything on, really.
Until their sensors are covered up.
After I got the entire thing working, I did something and something broke. And it was such a mess that it was easier just to redo everything. So, it's basically the same setup that I had. I just redid everything. After all, I can CNC any little PCB.
I don't have any kind of new routine yet, but let me show you the basic idea.
So, the box gets pulled out and you can clearly see that it says danger. And of course, you open it up and you'll do the joke of the thing biting, stuff like that.
You give a little bop.
Like that.
And you show it. So, then you can take it and you can tip this thing over and you can show the inside of it. You show that there's nothing inside there.
Like that. Then you can uh Well, hang on.
Oh, yeah. There we go. So, now we'll put the little squirrel back inside. So, we can just like this.
Here.
And we have little piece of paper.
We can fold this piece of paper up like so.
Here.
Let's place it in like that.
And let's see what the squirrel can do.
Now, the squirrel will use its little teeth to just chop away. There it goes.
It'll chop away at the paper and make a little design.
Are you done?
I think that means yes.
Okay.
Yeah, that's uh Well, that's that's something, all right. Look at that.
Well, that's a little people.
Well, isn't that cute?
That's just really cute there. Let's try again.
I'll have another one.
There you go. We can take that one. You do that one.
Come up with something really good for that one. I mean, but that one that one is really cute.
Does that mean you're done?
>> [screaming] >> I think that means we're done.
Oh, wow. Okay. It's a Okay.
Oh, I see.
It's a little tree bush thing.
There you go.
That's very cute. Now, see, I've done all this, but there's still one problem.
What is the finale? I don't know what the finale is cuz I can do this one more time, but where do I go from there? And I guess the only thing to go is, you know, you can pull the little squirrel back out and you can pull the uh the big squirrel out this time. Yeah.
And then you can take it.
And you can show the box is completely empty.
So, if you like this video, I'd appreciate a thumbs up. If you want to see more stuff, hit the subscribe button. I'd like to thank these people right here. These are the patrons. These are the people helping me out. These are the people bringing you this chest that tips over and does all this magic and stuff. So, I can't do any of this stuff without him. So, I thank the most of you very much. If you'd like to become a patron, of course, there's links and perks and stuff and everything. So, anyway, thanks for watching.
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