WEBVTT 00:00.110 --> 00:03.670 It's now time to start the final project of this course. 00:03.680 --> 00:09.320 You have now completed all the learning steps and have a great knowledge foundation you can use for 00:09.320 --> 00:13.430 any new project, including the one we are about to do right now. 00:13.460 --> 00:18.500 This project will be great for you to practice on everything you have seen in this course. 00:18.500 --> 00:20.660 So what is this project about? 00:20.690 --> 00:23.930 We will create a complete intercom system. 00:23.930 --> 00:26.750 Here is the result you will get at the end. 00:27.080 --> 00:33.050 So this is the complete circuit, including the Arduino and the Raspberry Pi here that you can see with 00:33.050 --> 00:35.960 all the components and the functionalities in the course. 00:35.960 --> 00:42.020 So first the Led will be blue and the intercom and we have a message push on button to call. 00:42.020 --> 00:50.090 So I'm going to push on the button to call and this is going to send a message to the Raspberry Pi. 00:50.090 --> 00:55.430 And you can see that we receive a message here on the Telegram chat. 00:55.460 --> 01:01.080 So if you have installed telegram on your phone, you will receive a notification somewhere on is ringing 01:01.080 --> 01:07.350 the bell and then you can send open or deny and well, this gentleman looks very nice, so I'm going 01:07.350 --> 01:09.330 to just open the door for him. 01:09.600 --> 01:10.050 Okay. 01:10.050 --> 01:16.200 So I click on Open and this is going to send back a message to the Arduino from the Raspberry Pi. 01:16.620 --> 01:17.850 The door is opened. 01:17.850 --> 01:23.970 We have the green led and you can see the servo motor has moved to open the door after 10s. 01:25.750 --> 01:30.760 We come back to the initial state with the blue led and push on the button to call. 01:31.390 --> 01:33.130 Now I'm going to call again. 01:34.300 --> 01:36.310 This is going to send another photo. 01:36.340 --> 01:40.900 So this is going to send another notification to the Telegram app. 01:40.900 --> 01:42.570 And well, who is this guy? 01:42.610 --> 01:44.140 I don't even see his face. 01:44.290 --> 01:46.120 I'm not going to open the door for him. 01:46.120 --> 01:47.710 I'm going to deny. 01:49.690 --> 01:49.990 Okay. 01:49.990 --> 01:52.990 And when it's denied, you have another different sound. 01:53.460 --> 01:53.820 Right. 01:54.190 --> 01:58.840 And then you have access denied for five seconds and then it comes back to normal. 01:58.840 --> 02:01.800 And you can call again to ask to open the door. 02:01.810 --> 02:06.510 And so here is a quick overview of what we have in the hardware part. 02:06.520 --> 02:10.060 So we have the Raspberry Pi first with the Raspberry Pi camera. 02:10.090 --> 02:17.050 This Raspberry Pi will be responsible to control the global logic of the application and will also interact 02:17.050 --> 02:18.370 with the telegram bot. 02:18.400 --> 02:24.130 Okay, so it can send some notification to your phone or your computer and it can also receive some 02:24.130 --> 02:24.550 comments. 02:24.550 --> 02:26.350 For example, open or deny. 02:26.860 --> 02:28.690 Then we have the Arduino. 02:28.720 --> 02:32.880 The Arduino will be responsible for basically all the hardware components. 02:32.890 --> 02:35.620 It will open and close the door with the servo motor. 02:36.250 --> 02:36.460 Okay. 02:36.460 --> 02:41.680 By the way, quick parentheses here, the servo motor directly power it from the Arduino and it is not 02:41.680 --> 02:42.880 mounted on any door. 02:42.880 --> 02:49.210 So what you could improve is to externally power it and mount it on a real door mechanism. 02:49.210 --> 02:51.910 So then we have an Led a buzzer. 02:51.940 --> 02:52.300 Okay. 02:52.300 --> 03:00.610 To make some light and some sound when we open close or deny access, for example, we have an LCD also 03:00.610 --> 03:08.050 to give some instruction to the user and a push button so we can make the call for the intercom. 03:08.050 --> 03:11.320 And so everything you see here is going to be controlled by the Arduino. 03:11.320 --> 03:15.400 But the command, the main command is going to come from the Raspberry Pi. 03:15.400 --> 03:20.740 And when you press on the push button, the Arduino will read it, but will send it to the Raspberry 03:20.740 --> 03:26.230 Pi and then the Raspberry Pi will communicate with the telegram bot and then coming back to the Raspberry 03:26.230 --> 03:28.210 Pi and coming back to the Arduino. 03:28.930 --> 03:36.190 This project is a very good example of how to use both Raspberry Pi and Arduino in one single application. 03:36.190 --> 03:42.730 Some of the functionalities are only possible with Raspberry Pi and others only possible with Arduino. 03:42.760 --> 03:49.180 By using the combination of both, you can build a more complex project with Raspberry Pi as the brain 03:49.180 --> 03:51.450 and Arduino as the muscles. 03:51.460 --> 03:57.910 You can also download a PDF for the project as an additional resource which contains all the specs and 03:57.910 --> 04:03.280 all the functionalities you have to implement, as well as an overview of the steps you can take to 04:03.280 --> 04:04.660 finish the project. 04:04.840 --> 04:08.920 I've put all the instructions in this PDF so it's going to be easier for you. 04:08.920 --> 04:15.430 You can just download the PDF, read it as many times as you want and keep it on the side when you work 04:15.460 --> 04:16.660 on the project. 04:16.840 --> 04:21.070 This project is a bit challenging, but this is the way to progress. 04:21.070 --> 04:25.150 I didn't want to create something super easy just to make you feel good. 04:25.150 --> 04:31.250 You will need to use your brain at full capacity here, but this is totally doable if you have correctly 04:31.250 --> 04:33.260 understood what we have done so far. 04:33.260 --> 04:39.560 And I can guarantee you that when you finish the project you will have a great feeling of achievement. 04:39.560 --> 04:44.990 And not only that, but you will be ready to start your next project with confidence. 04:44.990 --> 04:48.230 So make sure you take some time to work on the project. 04:48.230 --> 04:51.440 Also, try to design the steps by yourself. 04:51.440 --> 04:57.680 Think about what you need to do first and how to get to the final result one step at a time. 04:57.680 --> 05:04.700 Your step design may be different than mine and that's totally fine if it makes sense and if it allows 05:04.700 --> 05:06.500 you to finish the project. 05:06.530 --> 05:09.050 Now, don't stay stuck for weeks. 05:09.050 --> 05:15.080 If you really don't find the solution to the next step, then watch the step solution and don't feel 05:15.080 --> 05:16.040 bad about this. 05:16.040 --> 05:18.590 So you watch the step and only this one. 05:18.590 --> 05:24.530 And then you continue to work on the project a few days later, come back to this step and try to do 05:24.530 --> 05:25.250 it again. 05:25.460 --> 05:32.060 You can also come back to watch any previous lesson or activity of the course if you have some doubts 05:32.090 --> 05:36.050 or if you need some clarification on a specific point. 05:36.200 --> 05:43.070 The solution I provide next is a complete step by step solution where I explain everything and give 05:43.070 --> 05:47.690 you some additional tips and best practices for your future project. 05:47.690 --> 05:53.810 For each step, you can also download the project code until that step, Note that this solution will 05:53.810 --> 06:00.620 probably not be identical to the one you will have, but please note that this is just one solution. 06:00.620 --> 06:03.410 It is not necessarily the solution. 06:03.410 --> 06:07.790 If you get the same result with a different code, then it's okay too. 06:07.940 --> 06:08.420 All right. 06:08.450 --> 06:13.910 Now download the instructions PDF and let's get started with this intercom project.