WEBVTT 00:00.180 --> 00:05.520 All right, so now we have finished one more step, and that is almost the end now where we need to 00:05.520 --> 00:14.260 do is to handle the LCD display, screen the LCD correctly, handle the infrared sensor is correct handle. 00:14.280 --> 00:16.520 Now we need the LCD screen. 00:16.800 --> 00:21.210 So I'm going to include here include the liquid. 00:25.320 --> 00:26.610 Dot h libro. 00:26.880 --> 00:34.230 OK, so all the includes you, but at the very beginning of your program and then I'm going to add define 00:34.860 --> 00:47.370 for each of us Dean which is a five and then you find LCD E, which is a four. 00:47.370 --> 00:55.530 So you can get that from the previous section defined see the four being which is six. 00:55.680 --> 00:57.390 And then we need also. 00:58.760 --> 01:00.140 Five, six, seven. 01:01.920 --> 01:09.700 Five, six, seven, which is been number seven here, eight and nine. 01:10.860 --> 01:17.450 So I just took the previous defines that I had when I set up the LCD screen. 01:18.210 --> 01:21.490 Well, make sure you have the pins that correspond to your circuit. 01:21.750 --> 01:23.840 You can see we have quite a lot of defense here. 01:25.070 --> 01:28.880 And I'm going here in the global scope to use liquid. 01:30.670 --> 01:41.170 Crystal City and then but the different so of the Arab spin, the pin. 01:43.610 --> 01:45.770 The and then the default. 01:47.210 --> 01:48.710 He agreed to a new line. 01:50.750 --> 01:52.190 The five. 01:54.230 --> 01:55.760 And then the six. 01:57.270 --> 01:58.410 And these seven. 02:01.680 --> 02:10.610 All right, and then I'm going to go to the void setup function and do see so I can do this right here 02:10.650 --> 02:19.680 and see that begin with 16 and two, because that's the configuration of our LCD display. 02:20.340 --> 02:25.590 And now, well, we can just print whatever we want here in the switch. 02:25.950 --> 02:28.300 So let's start with the button zero. 02:28.530 --> 02:31.350 I'm going to LCD that sit. 02:33.070 --> 02:41.710 Just so we have zero and zero and I'm going to LCG good brains, the command. 02:43.220 --> 02:47.600 And also to avoid a case when, for example, the in here is shot. 02:48.170 --> 02:53.210 So the text is shorter than one of the previous comment we could print on the first line. 02:53.810 --> 02:59.170 I'm going to add a few empty spaces to clear the rest of the line LCG print. 02:59.510 --> 03:03.170 Let's just add a few spaces like this. 03:03.900 --> 03:05.240 So this is a real solution. 03:05.240 --> 03:10.970 Instead of using a fluke and check the length of the current as a string and then add many spaces, 03:11.300 --> 03:16.560 just add a few spaces if you know that it's not going to go bigger than this. 03:16.590 --> 03:20.630 OK, sometimes you don't need to overcomplicate the solution. 03:20.660 --> 03:22.230 OK, this is just fine for you. 03:22.340 --> 03:30.670 And then LCD that sits cursor with soap Calon zero line one. 03:30.680 --> 03:40.240 So the signal nine waybill to LCD that screens with full of elements. 03:42.780 --> 03:49.380 And let's just count the number of characters one, two, three, four, five, six, seven, eight, 03:49.380 --> 03:54.100 nine, 10, 11, 12, 13, 14, 15. 03:54.450 --> 03:55.980 Let's just add another one. 03:55.990 --> 03:57.060 So 16. 03:57.060 --> 03:58.470 So we have all the line. 03:58.770 --> 04:02.490 And if we had a previous character here, we just put a space instead. 04:03.150 --> 04:03.540 All right. 04:03.540 --> 04:05.520 So we have a case with the button zero. 04:05.730 --> 04:15.340 We is do our action and then we print something on the LCD screen and then let's do the same for you. 04:15.900 --> 04:23.520 So entity that sits just over zero and zero LCD screens. 04:25.500 --> 04:26.160 Command. 04:27.750 --> 04:30.660 A Saudi prince with a few. 04:31.890 --> 04:32.470 Space. 04:33.540 --> 04:39.690 And actually, because we are going to repeat that a lot, maybe I can try to use a function here, 04:39.720 --> 04:46.570 it's a void print comment on Etsy. 04:46.830 --> 04:49.310 We can't comment. 04:50.850 --> 04:55.140 So what I'm going to do is to do this. 04:58.240 --> 05:05.700 And remove the extra tabs, so print command as I get in command. 05:05.740 --> 05:13.060 So I said the closer to zero zero a predicament, I print a few extra spaces to clean the rest of the 05:13.060 --> 05:13.360 line. 05:13.750 --> 05:23.380 So now I can call this year instead of that print comment on LCD with the comment and then said the 05:23.380 --> 05:27.130 closer to zero one and then print this. 05:27.130 --> 05:28.630 And actually I can do the same. 05:28.630 --> 05:36.960 I can create another function void, let's say print action on LCD with this thing, the string that 05:36.970 --> 05:48.100 I'm calling action and I'm going to do LCD set just saw zero one and LCD print action. 05:49.640 --> 05:56.720 So not what I can do is just call this print action on LCD instead of. 05:57.920 --> 05:59.570 I'm just going to copy this here. 06:05.210 --> 06:14.210 So now it looks much better and what I can do is just use this for every other cases so I'm not going 06:14.210 --> 06:19.360 to forward, and one, I'm going to bring the LCD or so on the first line. 06:19.370 --> 06:21.770 And on the second line, I'm going to bring the action. 06:22.040 --> 06:24.170 But this time is Tuggle. 06:25.930 --> 06:33.130 Energy one, and let's make sure the characters are up to 16, so one, two, three, four, five, 06:33.130 --> 06:40.550 six, seven, eight, nine, 10, 11, 12, 13, 14, 15, 16. 06:41.020 --> 06:42.070 I have a few. 06:43.250 --> 06:44.210 Extra species. 06:45.170 --> 06:48.080 Now I can, but this also. 06:50.550 --> 06:51.960 For the button to. 06:53.590 --> 07:01.810 And let's to go to work, so that's the exact same thing forward and three together and three. 07:02.930 --> 07:10.730 All right, and now the last thing we are going to do for this activity is to handle this. 07:12.300 --> 07:14.290 And also the default of the switch. 07:14.310 --> 07:20.760 So what we do in this function here, we simply want to clear the LCD screen. 07:20.770 --> 07:22.020 So I'm going to do LCD. 07:22.050 --> 07:24.150 That's clear. 07:24.570 --> 07:30.030 And that's all there is to it, because with this button, we don't change anything for the edit is 07:30.330 --> 07:32.400 we don't print anything on the LCD. 07:32.400 --> 07:33.870 We just clear the SD. 07:33.950 --> 07:34.590 So that's it. 07:34.650 --> 07:36.480 LCD got clear, nothing more. 07:37.050 --> 07:44.970 And then the default, which means that if you press a button that is not on the list, so you can choose 07:44.970 --> 07:46.390 to ignore it. 07:46.630 --> 07:51.540 But you can also choose to print some message on the LCD. 07:51.600 --> 07:57.080 So let's do print command and we are going to bring the command as well. 07:57.420 --> 07:58.550 And then we are going to screen. 07:58.560 --> 08:03.510 So use let's use the print action on entity and let's use it to print. 08:04.380 --> 08:06.300 Not recognized. 08:09.150 --> 08:14.550 And let's count the number of characters one, two, three, four, five, six, seven, eight, nine, 08:14.550 --> 08:20.310 10, 11, 12, 13, 14, 15, 16 driblets. 08:20.460 --> 08:21.300 And an adult here. 08:22.900 --> 08:24.360 Let's add some nuts. 08:26.880 --> 08:28.270 Just to make it better. 08:28.440 --> 08:28.910 OK. 08:30.400 --> 08:33.080 I'm going to remove this. 08:33.100 --> 08:36.090 I think we have done everything OK. 08:37.260 --> 08:44.010 And as you can see, our I know is one hundred and twenty lines, that stands to be a really good program 08:44.370 --> 08:45.690 that's just verified. 08:46.050 --> 08:47.220 Once again. 08:50.190 --> 08:52.030 All right, so let's check the code. 08:52.050 --> 08:58.110 So at the beginning, we include the remote, I have remote liveried of liquid crystal library. 08:58.680 --> 09:06.120 We use some defiance to define the pins for the LCD, the pins for the entities, the pin for the infrared 09:06.330 --> 09:14.560 receiver, and then we use some design to map the different buttons on the remote control. 09:14.660 --> 09:17.730 OK, we create some arrays for the entities. 09:17.730 --> 09:19.800 We set up the density display screen. 09:20.290 --> 09:27.030 Then we have a bunch of function to set up the mode for the entity to cover of all IDs, to toggle the 09:27.040 --> 09:31.140 ads to one entity from the index using the arrays here. 09:32.880 --> 09:38.230 And then one function to bring something on the LCD on the first line, to bring something on the single 09:38.270 --> 09:42.890 line and then in the setup so you can see the setup is very small. 09:43.530 --> 09:46.820 We initialize the sale, which actually we don't need anymore. 09:46.830 --> 09:47.910 So I'm going to remove it. 09:48.510 --> 09:51.040 So we initialize the infrared receiver. 09:51.720 --> 09:56.730 We set up demotes for the 80s and we initialize the LCD display screen. 09:56.970 --> 09:57.760 Very simple. 09:58.320 --> 10:04.880 And then in the loop, what we do, we check if we have received some data from the infrared receiver, 10:05.220 --> 10:12.630 if yes, we get the command, we get the data that we write from the infrared receiver and then we switch. 10:13.080 --> 10:19.770 We simply check all the different keys that we can handle using the mapping for the different buttons 10:19.770 --> 10:21.150 that we have previously done. 10:21.660 --> 10:24.640 Then for each button, we do a different action for zero. 10:24.640 --> 10:32.040 We pull off it is and then we print what we need on the LC for button one. 10:32.040 --> 10:39.210 We toggle any one button to do with the correct index button three. 10:39.210 --> 10:48.240 We took a three with the index to if we press this button, we clear the city and then if we press the 10:48.240 --> 10:55.320 button that is not recognized, we just bring some kind of error message in the estimate. 10:55.650 --> 10:56.130 All right. 10:56.130 --> 11:01.200 I know this is the time to actually test the code on the. 11:01.530 --> 11:03.060 Let's upload the. 11:05.840 --> 11:15.110 Don't imploding, and now I am going to press on the button no one here just once you can see we have 11:15.110 --> 11:18.760 here the code 12 for me and then toggle anyone. 11:18.770 --> 11:21.440 And we took all the eligible and we put it on. 11:21.440 --> 11:25.580 I'm going to press one once more and then we pull right off. 11:25.910 --> 11:32.180 So I press it again, we put it on, then I press the number two four on the energy to a press. 11:32.180 --> 11:34.930 Number three, we put it on the eighty three. 11:35.180 --> 11:39.770 It's like this I can toggle the difference is OK. 11:40.190 --> 11:48.500 And now if I press the number zero, as you can see power of all it is and we pull out of place, OK, 11:48.560 --> 11:53.180 I can put on all the ideas we have one, two, three and then zero again. 11:53.900 --> 11:55.650 Go off of any list. 11:55.940 --> 12:00.350 OK, now if I press on the stop, what will happen? 12:00.860 --> 12:03.850 As you can see, the LCD is no clear them. 12:05.890 --> 12:13.960 All right, and this is also the solution of this debate using version two of the remote library and 12:13.960 --> 12:17.340 also using key, as you can see, the simulation hunting. 12:18.010 --> 12:24.740 So I have used the exact same code as before, just with a few modifications just for this library. 12:24.760 --> 12:27.180 OK, so the functionalities are the same. 12:27.520 --> 12:29.680 Just let's see what is different. 12:29.710 --> 12:36.850 So first, as you can see with my designs of the buttons for the remote controller, I don't use the 12:36.850 --> 12:38.130 same numbers. 12:38.140 --> 12:45.050 OK, he I have not the numbers here and I use the hexadecimal notation for the numbers. 12:45.070 --> 12:53.650 So starting with zero X and then the number I have right then in the global scope, I am also initializing 12:53.650 --> 12:57.040 those two things here specific to version two. 12:57.490 --> 13:03.190 And then as you can see, everything related to these are the LCD don't change. 13:03.220 --> 13:11.710 OK, but one of these two Cetron, what you can see here on the print command on LCD, that's the same 13:11.710 --> 13:16.610 thing that I am using along instead of it for the command. 13:16.630 --> 13:20.170 OK, and then we continue to do the same thing in the loop. 13:20.170 --> 13:22.620 Of course, we use the version two. 13:22.630 --> 13:26.470 So I receive the decoder with the results here. 13:26.500 --> 13:30.970 Don't forget the ampersand and then I receive that resume. 13:31.540 --> 13:35.930 And also the difference here is that I use long instead of it. 13:36.250 --> 13:43.240 OK, because individual three, the numbers we had with the commands, so with the data we got from 13:43.240 --> 13:49.240 the library, the numbers were really quite small so we could stored them in an integer. 13:49.480 --> 13:55.060 But with the addition to here, the value you are going to get, this can be quite big number. 13:55.060 --> 13:58.900 And if you was an integer, the integer will overflow. 13:59.620 --> 14:01.320 So that's why I'm using long. 14:01.330 --> 14:05.280 So I'm using long to get the value here and I'm using long here also. 14:05.490 --> 14:12.550 OK, because if, for example, I use in to here I send along the non will be cast as an int and then 14:12.580 --> 14:19.540 we would have some problem because this would overflow right here so long and long and everything else 14:19.690 --> 14:20.230 is the same. 14:20.650 --> 14:24.850 So now I'm going to start the simulation and take a look here. 14:26.270 --> 14:33.020 And let's press on some buttons, so button one, for example, you can see the right and these both 14:33.020 --> 14:36.140 on and you can see toggle added one with the. 14:37.130 --> 14:39.490 So as you can see, the code is a quite big number. 14:39.680 --> 14:42.370 And so this is the code for one. 14:42.380 --> 14:44.130 And as you can see here. 14:44.570 --> 14:47.390 So this is the decimal representation. 14:47.600 --> 14:51.410 And here this is the hexadecimal representation. 14:51.410 --> 14:53.760 But both are the same number. 14:54.040 --> 14:56.840 This is just a different way of representing. 14:56.840 --> 14:59.100 And then so I can tell you what. 14:59.180 --> 15:03.640 Again, OK, I can tell you two, three. 15:03.690 --> 15:04.290 OK. 15:04.430 --> 15:09.380 And then if I press on zero, look at the end here. 15:10.010 --> 15:12.200 All the edges are pulled off. 15:12.200 --> 15:20.720 And I have the message here of I can also press on the button here to clear the screen again, then 15:20.720 --> 15:22.940 continue to toggle the LCD. 15:23.570 --> 15:30.310 And if I press a button that is not recognized, which I have not defined in code, well, not recognized. 15:30.390 --> 15:39.230 OK, so anybody not recognize only the button I have not and used with the switch to process the command. 15:39.680 --> 15:40.190 All right. 15:40.190 --> 15:42.190 That's the end of this activity. 15:42.410 --> 15:49.030 So here, as you could see, it's a little bit more complex than what we have done before. 15:49.340 --> 15:51.510 But this is a truly great exercise. 15:51.530 --> 15:56.440 OK, if you manage to do it all by yourself, you will have made huge progress. 15:56.780 --> 16:03.320 So what I encourage you to do is to come back to this activity in for a few days and do it all over 16:03.320 --> 16:05.770 again from scratch just by yourself. 16:05.930 --> 16:06.310 All right. 16:06.320 --> 16:13.220 So that's the end of this activity and that's also the end of the section on the infrared remote control.