 So basically, anyone seen Star Wars? How many? Anyone has not seen Star Wars? One question is, who hasn't seen it more than twice? I just want to answer it once. Okay, so what happened is in the new Star Wars movie, there is a new joint called BBA. So it actually got a lot of attention from the internet since it was released because people was wondering and thinking that it's not possible to even build one to Star Wars movie. So when they actually show one, walking on the stage at the time, everyone was amazed, then I didn't actually take a look at that at that point of time. I actually got in somewhere like me last month also. And I just saw the board and I was saying, I actually built this out of something. And yeah, so I was thinking actually I had gotten a hospital one sometime later, then I realized that the hospital one is nice, it's cool. The spiro one is nice, but tab 2 expensive. And I was thinking maybe I can just integrate the hospital and the spiro one together and try to make something that is in between. And still not successful yet as you can see right now it's just a transparent skier that I got from us friend. Together with Ageno, Motor Driver, 2 motos and that's about it for the hardware actually. So let me just try to drive it. Wow. So control via Bluetooth? Ya, Bluetooth. So BB stands for Bluetooth port? It might. So let me just confirm. Let's confirm. It turns left, turns right. Okay, I'm a bit worried that it will drop off the table for some reason. Okay. Ya, put it on the floor. Then we can all gather here. Try to make sure that it works on the floor also. But I haven't really tried it out. So let's see if it can move forward. And then turn. I'm not quite sure where it's fun. And that's about it. So my biggest problem now is ya, quarter-weight. I don't know how to do it. And you need a very strong magnet at the top. Correct. And you need a gyroscope. To actually correct the thing and do the feedback. So let me just show you what happens if I connect the head. Actually I fail to hit quite more often than the thing itself. Of course, as mentioned I need for a very strong magnet for this. Which is actually not very easy. So actually what happens is I actually have two magnets on the head and on the body. Which in reverse polarity. So what happens is from there I could actually determine which side is the front. So let's just try it out. It might and might not work. Let's try this. Naki. But because I never tip-up the bow itself so there's a chance that it might just split-open at some point. So let me try this. Ah, so you let off. So the problem with the whole thing is mainly the magnet at the top. Too strong and there's a possibility that what I've tried so far when it's really really strong because the weight is not very heavy. The whole internal mechanism got caught up. So the wheel actually didn't touch the sphere at all then it's just danggain there. 2 liter and when you move the time the whole head will just spill off while me doing anything much. So yeah, that is pretty what a way to solve a lot of problems. Actually I tried to use counterweight but so far it didn't actually work for some reason. I'm not quite sure why. Let's talk about it. Can it also be friction? Ya, so what happened is the head itself with magnetic force actually also has some friction so if it's a bit too strong actually it's also prevented from moving. Well the big thing the way it will solve is won't overshoot and wobble around. Ya, so what happened is on the internet there's another implementation of this. Instead of using a hamster ball like what I'm doing right now whereby the internal mechanism is touching the sphere at the bottom. There's another one whereby they do a pendulum whereby it's just imagine the one with the head and things in the head, not that one. That's one version and there's one more whereby because they were looking at the video then they realised how this works let me try to take a look. So there's more than one way of skinning this cat. The bottom will be a pendulum with all the weights inside there. So the two end of the T-shape will actually be fixed onto the ball itself so it's a single assist. So it will move when the two motors on the two sides rotate. Then to turn what happened is because there's a pendulum so there's actually a servo motor whereby it turns while moving because of the force it will force the ball to move. Actually you know what, take it back you don't need a counterweight, you need a two axis gyroscope. Mechanical gyro. Gyroscope in the middle with the motor assembly the wheels turn, the middle piece stay solid and it will force the globe to move. Okay. So you move the wheels in the same direction it goes straight, backward and forward you move it in different directions and the whole thing in the middle stays stable to access gyro. Ya. I think I can do that. Well wait, that's a lot easier said. I think it's cool the way it is now. It works better as a giant spiral as you can see where I don't have the head there. With the head it's actually a bit slower because of the friction and a bit unstable so you don't know when the head will topple off. And we all have the head you can't really tell wasn't the head coming off and hit the seam on the ball? When the edge hit the seam on the ball that's when it's loosing. Ya, that's when it generates probably an area. Because you haven't tipped it up like this is not smooth it will probably bump on this and it will probably fall off at that point. Ya, that's probably the actual point where it drops off. Because it will probably jump if it hits that seam and it will just jump off. Ya, it is. You can also have an eject head button. What they say was in the movies there's supposed to be a mode and everything is controlled by the head. So like what you just mentioned so they got actually a escape mode which they never review in the movie How It Was Seems to be that I'm thinking it might be that so they're supposing an escape mode whereby it will just float so probably the head. Ya, next movie. Or actually it loses my head and when it comes back jumps up. Even look at the movies there's some parts I don't care about spoilers I'm not going to watch it anyway. Not once in a movie, there are some parts that is a bit I would say with the kindness like it actually proper from the stairs come down the stairs but the mode wasn't used for the movie. It was a puppet in the movie. Ah, correct. It was a puppet in the movie. But they made the real one for the stage. It's not actually used for the movie. How many of those things we see or pixels or not? What I heard there was 7 to 8 version of the joke that's being created for the movie so they got probably one for one for going right one for the head moving around. So it looks like what you've got could be a very interesting remote control toy. Ya. What's the bill of materials? Ah, that's the thing I haven't actually go and calculate it. Okay, there's Arjuno Uno here. The motor driver actually servis it from one of my other project. Based on what I saw on the internet it cost about $7. Then which of the motors cost about $9. So the rest is actually craft store stuff. The ball cost about $10. $5. The Bluetooth Low Energy Ya, that's the only one that cost about $26. I actually got it from Chubby. Chu, I'm kidding about that. So ya, the red bear labs this is the red bear labs ah no the other food Anorefia Ya. Cool. If you want you can download the other food app and you will be able to find it and then just connect now la. Oh, so that means it's a UART you're sending because it's there? When did you start the project? Ah, when I started the project it's probably a month plus. Actually, to get to this stage it's quite easy. To get to this stage, it's the one that's tough. Ya. Because it start to be a bit difficult because you don't know how much mana to use and stuff like that then you cannot find materials to make their head almost and stuff like that. So it's slightly a bit tougher on the mana portion. Ya. Thanks.