 Okay. Hello. Hi, I'm John here. So I'm an IoT engineer. I work in a Japanese corporation in the digital transformation team. So we do some kind of IoT solutions, but also prior to my current scheme, also I also base my own IoT solutions in clinical maintenance where we base sensors in the pools and then also I try to remotely actually control pumps wherever the end user is. So I want to share, I do some sharing about my current project today. So actually this project that I was doing is also partly inspired by my work as well because first I was experiencing working with OpenWRT gateways or at least evaluating some of them for some of my company's IoT requirements. So I thought the interesting thing to try to see how we can use OpenWRT gateway to connect some of the IoT devices and then connect it to the cloud. So yeah, what's the hardware involved? Basically it's a Raspberry Pi and you can either use one or two ESP devices. So I'll show you video first and later hopefully I can show you the demo. So software involved I think basically, software involved basically we just basically use software and we just, we'll use the version one of AWS FilmPress. So roughly this is the technical architecture. So we use the Raspberry Pi as the inverse call device and we can connect to either, we have one or two ESP32 connecting to the universe call. So here's a video for one ESP32 that I did. So I think you can see on the left is the AWS IoT dashboard and on the right is the Arginial Serial Monitor. So basically ESP32, normally puts your format on the ESP32 and also we connected the DHT11 to get temperature and humidity and so this is how we are getting the data wirelessly onto AWS IoT. So for those in the IoT space, I think you are quite familiar with the AWS IoT. So this is something that I do on the daily basis. So as you can see, give me a moment first. Sorry for the video. So you can see like it's, so we have ESP32 that's getting temperature and humidity data as automatically updating the IoT site. So basically once this is done, this is done right, if you have any front-end application that you want to put on the dashboard and all this, you can build on this part here. Then if we look at two ESP32, if you want to see whether you can do multiple devices, so basically it's what I show is possible as well. So I classify two ESP32 using the SSID. So one of them is having an ID of 64 and one of them is having an SSID of 148. So the one with SSID 64 is having a recording of the time which I can be data. The 148 is still a 10 ESP32. I haven't connected it to anything yet. So it's just when I'm just pulling it down. But if possible, you can put a relay there, you can put the, you can put other sensors there as well. So we can, and all is posting the same topic onto the AWS IoT Core itself. So I think that's the end of my video demos. But if you want to, I also need some documentation of how to do this. So I will just share my, I just will share on the Facebook group after this whole session. So let's see where it can. I already connected my Raspberry Pi and all this. So let me see whether I can do the link up. Okay. Yeah. Wi-Fi. So don't mind about it. Just switch to my iPhone for one. Although it will come out then come back in again. Yeah. So far, are there any questions? No, no questions. Instead of doing the last thing, yes, of the firewalls also can be used, right? You saw firewalls? Yeah, firewalls, you can, if you have plenty of devices. So what is the benefit of this IoT application? In AWS, there are many IoT docs, right? Yeah. So why do you particularly choose the way? So partly because also I found a time also when I was exploring graphs for each applications. So in one of my current projects with my company, right, we did, we have, we actually did a, we actually now submit a requirement for each, for each application, account applications. So we actually put a green rice and they will take away that although now it's still quite a big data, but eventually you want to use some, for each application there. However, it's still, I mean, on the, on the, on that size, the requirements are not clear yet on the customer, but we are looking to do, we are looking at that direction, the future. So they have a reply and we have the microcontroller. So the actual measurement that we care about is done by the microcontroller. It's done by the microcontroller. So what does the pie do? Also the pie is basically I, is right now, it's being, I'm using it as a Wi-Fi extender. I use, so I put, I, when we, I put open wi, what RWRP OS onto my Raspberry Pi, so I configure it as the Wi-Fi extender. So I, so in a, in a scenario where you are in a building where there's Wi-Fi and there's wireless sensors, one use case you can possibly come about if you have, you have a quick extender to actually connect to the wireless, wireless sensors that will upload, that will upload directly to the cloud. But yes, if you already have a client, right? Yes, but yeah, but I mean it's a good way to create all the data together in that sense. First, I mean, there are, I mean, there are other, there are a few, there are plenty of ways to work to do these kind of things. Just that for this case when you, when you have, when there's a specific requirement to use a new AWS device as an, on the gateway itself, so this, this is a very good function to convey your, to convey all your sensor data, which could be on ESP32, to be too many. So the ESP32 is like hoping some extender for the phone with the Pi, the Pi, yes. So, for this demo, it's that, that's the time being. Yeah, but eventually I think if, because in my, in my, in one of the commercial applications I'm doing, because I'm using a, I'm using a green bus and we will get away as well. I actually have to make XML request to the, to the controller that I'm catching my Raspberry Pi 2. So, I mean, so that's where actually the green bus function can come in handy, because I can pull a lambda function on the green bus itself and, and then it now goes to the Raspberry Pi. Okay, okay. Okay, so, all right. So, any more questions? I'd like to know, is the MP3 or something on purchase? We will do that, because I think by default it's not, right? Yeah, so that's something we will look at, we'll look at in the, for my commercial side, we'll look at in the, first we're still in the POC stage, so we will be looking into that in the, in the near future. But if you have, like, suggestions on the encryption, I'm open to hear. You have a company, right? But you developed an Arduino? No, no, I work in a company. So, you developed an anti-IoT system, which I guess. What do you use as an ID, Arduino, the Arduino ID? Yeah, I mean, for, to put, I mean, to enable the DSP32 to start publishing messages to the AWS side, we, yeah, we use the Arduino code to do that. Yeah, of course, but as my, as a tool, we use the Arduino ID, I don't know what ID it's called. Oh yeah, I do ID, yes. So, you don't, so when, I mean, okay, I have many questions. Yeah, okay, I think we'll move on. Second, thank you guys all for being on the show. Maybe I'll do a video on the demo again, and then I'll do a test. So you have any questions, and you know what, I think after, after, after the run,