 Jadi, bagaimana jika kamu mempunyai Gap National for a WeBag? Tak ada yang beritahu saya. Tak ada yang beritahu saya. Saya rasa apapun yang beritahu saya ini adalah bagaimu. Jadi, dia sebenarnya akan bercakap tentangnya. Okey. Okey. Jadi, just a introduction. In case of you are not aware about Singapore's history. Ya. Ya. Ya, so you never know. Okey, so. Okey, so we get independence from nature in 9 August. Okey, so we recently celebrated our 50th birthday. And then this event was held at the New York National Stadium. 40 million. Ya, so you can say National Stadium actually is indoor stadium here. Okey, so as we like Singaporean style, there's always goody packs. When it comes to the National Day parade. So I went to the preview, not actual one. So the preview is actually a real song. So it was held on 30 July. So inside this bag, actually this LED wristband, which I'm passing around now. Okey, so I just show you a quick video of how this band actually works. Okey, so this is the event here. So you can see the band, sorry, the band blinks. Now it blinks yellow. So actually, how this band, the colour changes actually. Sorry. Okey, so the colour depends on the segment of the event. So maybe now it's yellow. Then another segment it blinks green and blue and so on. Okey, I'll show you another video. Okey, so you see now the colour. Ya, it's this colour. So it changes to blue. Okey, so it changes to many colours throughout the event. Okey, so of course I'm curious to how this thing works. So I went online and I searched. Then I found out that this band was actually made by this company, CopicsMod. There are actually 2 products here. The first product is called the professional one. It runs on infrat. So this is made for 1,500 to 150,000 attendees. The second product is actually for a much-follow number, 1,500 attendees. So since the National Stadium is about 55,000 in terms of capacity, so it definitely has to be the first one, the infrat one. So you can see from the picture here, it's not very clear. So how this works is that there are actually many infrat emitters around the stadium. So at a certain time, they'll broadcast a certain code and then the band will pick up the code and then you display the colour of that choice. Okey, so I'll put in. Ya, I told ah. So these are the components. So I'll just go through them. The first one here, IR, this is actually an IR receiver here. So this is how the band receives instructions from the organisers. Which one is it? Ya. Which one is? Sorry, which model? I'm not sure which model is it. I need to return that. Okey. So then they have RGB LED. Ya. Then in terms of the brains of this device, actually this, sorry, here. IC2, AirBolf, Fire Controller, it's made by a current company. Ya. This one. Then surprisingly, there's actually an EE from chip here. So actually they are made a lot of misconception. People think this is a voltage regulator. But actually it's not. Because I googled the inscription there, actually this one. So of course surprising they have a memory chip there. Okey. So then on the back, there's actually a single XT as serameter. So at the end of the event, you can actually shake the band. When I shake the event, ya, it blinks red. Then ya, the battery is a CR2032. Over there. Okey. So I decide to think further. So I just use my multimeter. And then now, I can make it change to different lights. Ya. Just set the correct points. To get the different voltage drops. Okey. So the simple one. The hard one is this one. So actually, I actually use the multimeter. Ya. I set all the connections. So I drew this out with hi-cat. Ya. Okey. So the single XT serameter is here. The battery folder is here. Inflat is here. And the RGBRD is here. Okey. For the microcontroller is this one. And the memory chip is this one here. Okey. So after I drew this out, then ya. So I just begin to wonder. Ya. There are actually Sdata-Sdk. Sdata-Sdk is here. These two. So I've read how they programmed the microcontroller initially. Then, there are two resistors R2 and R6. I'm not sure what this is for. They connect the VCC between like that. Ya. I don't know. Then, the surprising thing is that this memory chip EEPROM here, it uses i-square-C bus to communicate with the microcontroller. But this microcontroller does not have hardware i-square-C. So this means it bang i-square-C bus here. Very interesting. Then for the memory chip, it's WP-PIN. WP-PIN stands for Ride Protection Is Set to Ground. So I look up the data sheet it means Ride Protection Disabled. Which means actually this chip can ride something to build. Ya. So of course I was not satisfied with it. So I wanted to actually use this band. Okey. So the first thing is I end TV remotes at it. So maybe I can get it to blink other colours. I can't work. Okey. So step number 2 Maybe we can dumb and analyse exactly code. But the thing is I don't have the tools for this. So this option is out. The third way is maybe I can force the R code combination. So actually I created these two here. I'll pass this around. Here. So this is actually a micro-view. Ya. So what it has here. Okey. So this micro-view is based on the 80 mega-328p. Same as Abino will know. Where it is screen. There's an IR LED here. This one. So this will send IR commands to the band. And then there's a photo cell. Okey. So what this photo cell does is that let's say if you send the correct combination the photo cell can detect this band light up and then you tell the Abino here. Okey. I found the correct one. Okey. But this actually I couldn't do it. Because ya there's simply too many codes to prove for us really. Possibly trillions. So it's actually okay. Ya. So potential maybe once I get the proper tools I can dump the wrong or another way is probably you can get fix all to like open source what is the R protocol. But so far they did not do it. Ya. So yes that's all from my learning talk. Any questions? Passions? Anyone? No one? Okay. Great. Thank you. Ya. Yes. Sorry. Supposedly they rewrite the code to behave differently. Ya. Possibly they send an IR code at the end. Ya. And then we have firmware too. Ya. Possibly. Ya. Ya. So next year we have to record actually the message there. So next year I'll record there to the investor. I'll record the concern. Ya. Actually it's not feasible to do that. Because there's a lot of security cards there so we're going to make the other person who can make the video. Okay. This is the last one, right? Okay. Alright. So thanks, Kingman. Ken. Ken. Ken. Ken. Ken. Ken. Ken. Ken. Ken.