WEBVTT 00:00.440 --> 00:01.640 Robotic enthusiast. 00:01.880 --> 00:07.490 So far we have developed all the robot's functionalities locally within our PC. 00:08.000 --> 00:11.840 Now it's time to connect the robot to the Internet. 00:12.580 --> 00:18.520 This is a crucial step as it opens up potentially infinite number of applications. 00:18.520 --> 00:23.740 And these are the real innovation, the true revolution in the field of robotics. 00:24.340 --> 00:31.210 A robot connected to the Internet is no longer limited by the computational power and resources it has 00:31.210 --> 00:32.620 on its own computer. 00:32.620 --> 00:39.760 Instead, it potentially gains access to a cloud and a range of constantly evolving and expanding resources 00:39.760 --> 00:41.020 and applications. 00:41.860 --> 00:43.240 Among these applications. 00:43.240 --> 00:47.830 One of the most interesting for robotics is the one of the voice assistants. 00:48.630 --> 00:55.220 If we think about it, in the industries and factories where we are more used to encounter robots, 00:55.230 --> 01:01.890 they are often controlled with larger and cumbersome joysticks, especially during the learning phase, 01:01.890 --> 01:04.140 or to initiate a specific movement. 01:04.500 --> 01:12.030 This type of controller is well suited for an industrial environment where dust, water and restrictive 01:12.030 --> 01:17.340 safety measures require robots to be operated using these complex systems. 01:18.540 --> 01:26.520 However, there is an increasing transition from industrial robotics to domestic robotics in this scenario. 01:26.550 --> 01:34.140 Robots move from having a safe and reserved space uniquely for their movements to having to share their 01:34.140 --> 01:41.370 space with living beings, requiring us to consider other aspects of robotics that have not been taken 01:41.370 --> 01:46.320 into account so far, such as human robot interaction or Hri. 01:47.070 --> 01:53.310 In this new scenario of interaction between humans and robots, what a better way to communicate than 01:53.310 --> 01:54.570 using our voice. 01:54.600 --> 02:00.750 The tool that has allowed us to communicate with other human beings since our appearance on Earth to 02:00.750 --> 02:02.460 also communicate with robots. 02:03.100 --> 02:03.940 True voice. 02:03.940 --> 02:10.530 We can convey our intentions, request tasks to be executed, and also receive feedback from the robot, 02:10.540 --> 02:15.940 enhancing our awareness of the actions and movements that the robot is going to do. 02:16.980 --> 02:19.140 Among the available voice assistants. 02:19.290 --> 02:24.900 I have used it to choose the Amazon ones for this course because it offers the possibility to add new 02:24.900 --> 02:29.490 features to the voice assistant and define new behavior or skills. 02:29.730 --> 02:36.750 This is made possible thanks to the convenient interface and the API that Amazon Alexa provides to the 02:36.750 --> 02:43.350 developers of application that use different Alexa skill and its language interpretation software. 02:44.230 --> 02:51.820 These API are known as Ask SDK and are offered in combination with a user friendly graphical interface 02:51.820 --> 02:57.400 that allows us to test these features even without using the physical device. 02:57.520 --> 03:03.790 Therefore, you can comfortably follow this section of the course without having the Alexa voice assistant 03:03.790 --> 03:04.930 at your disposal. 03:05.050 --> 03:10.180 To complete this section, in fact, you won't need to purchase the Alexa Voice assistant. 03:10.210 --> 03:17.170 Instead, you can access the Alexa Developer web page and interact with the assistant through the voice 03:17.170 --> 03:18.460 to control the robot. 03:18.940 --> 03:25.450 However, before we can send voice commands to the robot, we need to establish a connection between 03:25.450 --> 03:31.180 our robot or the simulated one that is running on our PC and the Alexa voice assistant. 03:32.370 --> 03:37.950 Fortunately, the communication between these two modules is straightforward and you might already be 03:37.950 --> 03:39.040 familiar with it. 03:39.060 --> 03:44.250 It's called the Internet, with the help of a software called Ngrok. 03:44.340 --> 03:51.180 We will create a web server on our PC or robot and we will provide the web address to this server to 03:51.180 --> 03:51.570 Amazon. 03:51.570 --> 03:55.050 Alexa allowing it to communicate with our robot. 03:55.840 --> 03:56.710 Internally. 03:56.710 --> 04:03.010 We will then connect this web server to Ros two so that it can send comments to the action server we 04:03.040 --> 04:08.920 named Task Server in order to move the robot as requested by the voice assistant.