WEBVTT 00:00.000 --> 00:10.000 Thank you. 00:10.000 --> 00:21.000 Today my talk is about power attempt to build 20 euros marked home server, which will be completely open but in hardware in software. 00:21.000 --> 00:24.000 So, you all have the help. 00:24.000 --> 00:28.000 I'm owner of Tollenex, all he makes is small company in Florida Bulgaria. 00:28.000 --> 00:33.000 We are dealing with electronic design and production of electronic devices. 00:33.000 --> 00:38.000 We have more than 1000 products, most of them are with top and source license. 00:38.000 --> 00:40.000 How this started? 00:40.000 --> 00:43.000 We have a local conference, which is copying for them. 00:43.000 --> 00:47.000 It's run by volunteers locally in Florida Bulgaria every year. 00:47.000 --> 00:51.000 We gather with friends, bring beer, make talks. 00:51.000 --> 00:58.000 And the last two years in the row, we make challenge to ourselves. 00:58.000 --> 01:03.000 To build something which is at first sight impossible to build. 01:03.000 --> 01:07.000 And we try to do it until the next conference. 01:07.000 --> 01:12.000 And such challenge in 2024 was to build. 01:12.000 --> 01:22.000 One euro is 5 personal computers, which to be like retro computers running basic games and tips. 01:22.000 --> 01:28.000 Almost the development talk is almost here, but we now have it. 01:28.000 --> 01:38.000 And yesterday more than 150 sets of 5 computers were built here at first then in a soldering workshop. 01:39.000 --> 01:49.000 So, last year, during the conference, I was trying to configure commasystem to exploring how it works. 01:49.000 --> 01:54.000 And I told that it's way much to complicate it. 01:54.000 --> 01:59.000 However, installed commasystems know what I am talking about. 01:59.000 --> 02:07.000 You watch some videos on YouTube, how to do this or that because you have so many options. 02:07.000 --> 02:12.000 And so many futures which confuse you at the beginning. 02:12.000 --> 02:14.000 Commasystems is great. 02:14.000 --> 02:19.000 Once you do this process, everything is okay, you know what to do. 02:19.000 --> 02:26.000 But until you learn how to do it, there is a big, big learning curve. 02:26.000 --> 02:32.000 So, I told me we should do something which is affordable and easy to use. 02:32.000 --> 02:37.000 And this is how this challenge to build something for 20 euro come up. 02:37.000 --> 02:44.000 So, many people will say, okay, but there is plenty of free cloud services. 02:44.000 --> 02:49.000 Every IoT vendor has some cloud service. 02:49.000 --> 02:52.000 But there are a few problems. 02:52.000 --> 02:56.000 First you don't have privacy, they lock everything you do. 02:56.000 --> 03:04.000 Then the basics are usually free, but if you want to do anything else behind pushing some buttons, 03:04.000 --> 03:10.000 you have to go to the pro extended plus version and you have to pay. 03:10.000 --> 03:15.000 And there is absolutely no compatibility between the different vendors. 03:15.000 --> 03:22.000 So, sometimes you have 10 apps to work with 10 devices you bought from different vendors. 03:22.000 --> 03:27.000 As I said, there are very nice open source alternatives. 03:27.000 --> 03:36.000 But the problem is that they want to support everything and compete with each other to bring more and more futures. 03:36.000 --> 03:41.000 And this makes them very complex in resource hungry. 03:41.000 --> 03:52.000 So, then such smart conservators usually need Raspberry Pi 5 or 4, with at least 4 gigabytes of RAM. 03:52.000 --> 03:59.000 So, I want to build something very basic, very affordable, and to be completely open source, 03:59.000 --> 04:05.000 and you can tailor to your need. 04:05.000 --> 04:13.000 We just need to add some notes to make some logic, logic to display some chart data, 04:13.000 --> 04:17.000 and to make some scene editing. 04:17.000 --> 04:19.000 Simple, simple scene editing. 04:19.000 --> 04:24.000 For the hardware, because we said the challenge, 20 euro, 04:25.000 --> 04:33.000 I found suitable processor from Albinder, which has dual-core Cortix A7, 04:33.000 --> 04:39.000 running at one gig here and building 128 megabytes of RAM. 04:39.000 --> 04:47.000 So, these small resources didn't give us much options. 04:48.000 --> 04:52.000 Here is three months after the technical. 04:52.000 --> 04:55.000 We already had our hardware. 04:55.000 --> 05:00.000 We have Ethernet, USB host, audio, LCD display, 05:00.000 --> 05:09.000 lipo charger, which allows you to run the server from small lipo battery in SD card for logging. 05:09.000 --> 05:17.000 If you want to make a small box, the small board is power over Ethernet option. 05:17.000 --> 05:29.000 So, you can put inside the lipo battery, and it's small box, it's 8 by 5 cm. 05:29.000 --> 05:37.000 For the notes, we decided to use one of our standard boards, which got some release and inputs. 05:37.000 --> 05:44.000 For the software on the server side, we had no much options except OpenWRT, 05:44.000 --> 05:52.000 because OpenWRT is run very comfortable in small memory footprints. 05:52.000 --> 06:02.000 It is the latest Linux kernels with all the security patches, which is requirement if you want to do IoT stuff. 06:02.000 --> 06:08.000 And of course, it has all the packages, which we need for the development. 06:08.000 --> 06:17.000 Big thanks to Zoughton, who is here, and who made the port for the OpenRT 113. 06:17.000 --> 06:23.000 I put his gift on this slide. 06:23.000 --> 06:30.000 From the OpenWRT packages, this is the list of packages we are using at the moment. 06:30.000 --> 06:39.000 As you see, it's a PHP Python entity and some other stuff. 06:39.000 --> 06:43.000 For the note side, we decided to use SQL. 06:43.000 --> 06:48.000 Why? It's very popular, very active development. 06:48.000 --> 06:55.000 It supports a large amount of sensors and peripherals. 06:55.000 --> 07:04.000 And it's extremely easy to modify by making your own external components. 07:04.000 --> 07:10.000 And it actually runs on almost every ESP32. 07:10.000 --> 07:17.000 So, this is the work name we named all the max codes, home of things. 07:17.000 --> 07:23.000 And the basic functionality is already implemented. 07:24.000 --> 07:28.000 Right now, we are adding new features on weekly basis. 07:28.000 --> 07:32.000 Almost everything we wanted to achieve is already done. 07:32.000 --> 07:38.000 I will show you in the next slide how the interface is looking. 07:38.000 --> 07:43.000 All you need to do is to connect a Internet cable to your server. 07:43.000 --> 07:50.000 And you can't secure code or to lock in your home network and open all index code.local. 07:51.000 --> 07:55.000 And then you see the first page. 07:55.000 --> 08:00.000 You have to set up the time after that. 08:00.000 --> 08:06.000 You can scan for Wi-Fi networks and enter your credential. 08:06.000 --> 08:11.000 Why do we need? We are all ready connected to this home network. 08:11.000 --> 08:19.000 But we need the credential to verify the Wi-Fi and to program the notes automatically later. 08:20.000 --> 08:26.000 Then we create a user log in and this is our welcome screen. 08:26.000 --> 08:34.000 We can configure now areas, areas is a group of sensors to not be bulky. 08:34.000 --> 08:39.000 We are making two areas basement for four. 08:39.000 --> 08:45.000 Then we can scan for notes and we found the one of the notes. 08:45.000 --> 08:50.000 Every note when it is programmed for the very first time, make access points. 08:50.000 --> 08:54.000 And our server detects them by the Polynx code prefix. 08:54.000 --> 09:00.000 And then you can add friendly name and see what's inside this note. 09:00.000 --> 09:06.000 And you see a dashboard with all the features of this note. 09:06.000 --> 09:12.000 Then you can assign friendly names for the different delays. 09:12.000 --> 09:16.000 Temperature sensors keeps like this. 09:16.000 --> 09:21.000 And if you don't need somebody else, you can just hide them. 09:21.000 --> 09:28.000 And this is how the dashboard looks after you made this small configuration. 09:28.000 --> 09:32.000 As you see, it has basement and first floor. 09:32.000 --> 09:35.000 Group of sensors and features. 09:35.000 --> 09:39.000 Then I can move the order, which is displayed. 09:39.000 --> 09:42.000 I can move the basement on the bottom. 09:42.000 --> 09:48.000 And when I go to the dashboard, I see the basement below. 09:48.000 --> 09:55.000 Then I can do something like resetting firmware upgrading, factory reset, 09:55.000 --> 10:04.000 or I can hide this button if I don't want the user to interact with them. 10:04.000 --> 10:07.000 And this is what you can do again. 10:07.000 --> 10:14.000 To set time zone to check the MTT configuration. 10:14.000 --> 10:19.000 As you can see, the password is generated by the server at the first run. 10:19.000 --> 10:22.000 At the first run. 10:22.000 --> 10:29.000 We can add more users. 10:29.000 --> 10:31.000 And give them some rights. 10:31.000 --> 10:34.000 What to see, what to change, and it's either. 10:34.000 --> 10:37.000 So what is in the to do list? 10:37.000 --> 10:42.000 We have to make the lots, charts, and the scenic data. 10:42.000 --> 10:48.000 It will be good if we can manage to make a push notification to your phone. 10:48.000 --> 10:53.000 So when something happens to get a notification on your phone. 10:53.000 --> 10:57.000 And to add as a cell if we want to connect to the outside world. 10:57.000 --> 11:02.000 Because right now we work with the local home network. 11:02.000 --> 11:05.000 So problems to solve. 11:05.000 --> 11:08.000 It opened WRT. 11:08.000 --> 11:16.000 I was very surprised that there is no driver for this popular Wi-Fi model. 11:16.000 --> 11:22.000 Which is available in Linux kernel, but probably I see the logic. 11:22.000 --> 11:27.000 And WRT is usually running on a process which has internal Wi-Fi. 11:27.000 --> 11:33.000 So nobody has working for external Wi-Fi models on the driver's side. 11:33.000 --> 11:37.000 And the driver we found works only in monitoring mode. 11:37.000 --> 11:42.000 So you can monitor the network, but you cannot connect to the devices. 11:42.000 --> 11:45.000 So I'm calling for help. 11:45.000 --> 11:50.000 If there are people here from WRT, which can face this problem, please help. 11:51.000 --> 11:58.000 Because right now we use this RTRO 9K obsolete USB Wi-Fi model, 11:58.000 --> 12:04.000 which is the only we found supported fully in the open WRT. 12:04.000 --> 12:07.000 There are some small problems on the north side too. 12:07.000 --> 12:14.000 We made a small PR because for this node, we always want to have prefix, 12:14.000 --> 12:16.000 polymx hot. 12:16.000 --> 12:23.000 And there are some small PR requests, which is pending since July. 12:23.000 --> 12:27.000 And it's not merged yet, but it's normal. 12:27.000 --> 12:33.000 I can see that they get maybe dozens of PRs every week. 12:33.000 --> 12:42.000 They have backlog of about 350 PRs and about 500 issues. 12:42.000 --> 12:44.000 And then you speak on path. 12:44.000 --> 12:48.000 Fortunately, there is a very easy way to work around this. 12:48.000 --> 12:51.000 You can make a description for your board. 12:51.000 --> 12:56.000 And the changes you did on GitHub, you can address them. 12:56.000 --> 13:04.000 If you put this in your email also, you will always make completely support your board. 13:04.000 --> 13:10.000 Even if your PR is not merged to the matrix, it's a small issue. 13:11.000 --> 13:16.000 So, while we were developing, we got a ton of new ideas. 13:16.000 --> 13:22.000 For different hardware nodes, which will allow to make access control 13:22.000 --> 13:28.000 to monitor some status of the machine's production 13:28.000 --> 13:38.000 to do parameter logging and to make some maintenance of the machines. 13:38.000 --> 13:42.000 If you see some deviation from the sensors. 13:42.000 --> 13:48.000 So, if you want to join this project, we have dedicated this card server 13:48.000 --> 13:52.000 and we have repositories. 13:52.000 --> 13:58.000 You're welcome to give ideas or to participate. 13:58.000 --> 14:02.000 So, I think I finish. 14:03.000 --> 14:08.000 You're welcome. 14:08.000 --> 14:11.000 We're welcome. 14:11.000 --> 14:13.000 Time for questions. 14:13.000 --> 14:14.000 Hello. 14:14.000 --> 14:16.000 Thanks for your job. 14:16.000 --> 14:20.000 It's great to see a new assistance for your sponsors. 14:20.000 --> 14:23.000 My question is probably a feature request. 14:23.000 --> 14:26.000 And I think that I miss in my system at home. 14:26.000 --> 14:29.000 I use all the export that I have 20. 14:30.000 --> 14:33.000 But I have like a light and the switch. 14:33.000 --> 14:37.000 And I want to combine them with only one device. 14:37.000 --> 14:43.000 If I want to turn on and off the light, I use the switch. 14:43.000 --> 14:45.000 The end of the switch. 14:45.000 --> 14:50.000 And if I want to turn on all over the brightness, I use the light. 14:50.000 --> 14:56.000 So, it's very nice to have only one device that I can do the board. 14:56.000 --> 14:59.000 Do you plan anything like a vitrol? 14:59.000 --> 15:00.000 Yeah. 15:00.000 --> 15:02.000 Everything is possible. 15:02.000 --> 15:05.000 This project is just running. 15:05.000 --> 15:09.000 Now, and we are open to any suggestion and features. 15:09.000 --> 15:14.000 And I think just we want to keep it simple. 15:14.000 --> 15:18.000 And we want to keep it low cost affordable. 15:18.000 --> 15:23.000 If your features doesn't confront with this requirements, 15:23.000 --> 15:27.000 it's most likely they will be included. 15:27.000 --> 15:28.000 Okay. 15:28.000 --> 15:32.000 As you see, what focus here is you plug the internet. 15:32.000 --> 15:35.000 You're server is set up. 15:35.000 --> 15:39.000 You scan for devices you add them and manipulate them. 15:39.000 --> 15:41.000 No reading, any else. 15:41.000 --> 15:44.000 No watching for YouTube videos. 15:44.000 --> 15:47.000 We don't want to replace commosystem. 15:48.000 --> 15:49.000 This is great. 15:49.000 --> 15:54.000 We will never touch one percent of commosystem futures. 15:54.000 --> 16:01.000 But we are comfortable with this set of futures for all needs. 16:01.000 --> 16:03.000 I had a question. 16:03.000 --> 16:16.000 Is it be home running on the A7 or is it fleshed from another? 16:16.000 --> 16:20.000 My machine. 16:20.000 --> 16:26.000 How are the notes flushed by PC? 16:26.000 --> 16:35.000 If he is p32 board and usually he is p2 for flashing, 16:35.000 --> 16:43.000 you just use the emerald configuration and he is p home to generate the binary code. 16:43.000 --> 16:46.000 And then you flash it with his p2. 16:46.000 --> 16:49.000 But you don't flash it through the server. 16:49.000 --> 16:53.000 We want to be for non-technical person. 16:53.000 --> 17:01.000 I have 84 year old father, which I am using like better tester. 17:01.000 --> 17:05.000 He is electric engineer. 17:05.000 --> 17:07.000 He is very smart. 17:07.000 --> 17:16.000 Like for many things I do, but he doesn't work with computers. 17:16.000 --> 17:21.000 And if he managed to do this server and to use it, 17:21.000 --> 17:24.000 I am sure that everybody will. 17:24.000 --> 17:29.000 First of all, thank you for all of me. 17:29.000 --> 17:31.000 We love it. 17:32.000 --> 17:39.000 Have you considered using ESP hosted as a Wi-Fi device. 17:39.000 --> 17:43.000 This way you can also implement Bluetooth and maybe later as it be. 17:43.000 --> 17:44.000 Yeah, yeah. 17:44.000 --> 17:49.000 If you saw on the picture, we have UX connector on the server. 17:49.000 --> 17:58.000 And we have already module with ESP C5, which is two and four gigahertz 17:58.000 --> 18:02.000 and if support is a matter and everything. 18:02.000 --> 18:08.000 And we can use UXB hosted to implement this protocol on the server. 18:08.000 --> 18:11.000 So yes, it is possible. 18:11.000 --> 18:12.000 Awesome. 18:12.000 --> 18:13.000 Thank you very much.