1 00:00:00,510 --> 00:00:07,590 Now that we are done with the LED blinking example, let's move on to the touch sensor example. 2 00:00:10,070 --> 00:00:15,410 This is a new cool feature that's available on the ESB 32 balls. 3 00:00:15,980 --> 00:00:20,660 VSP 32 has internal 14 internal capacitive touch sensors. 4 00:00:21,120 --> 00:00:24,980 We already explained or showed these pins. 5 00:00:29,720 --> 00:00:31,820 We already showed. 6 00:00:35,980 --> 00:00:41,190 Will explain this bends and the wiring layout of the speaker to to listen. 7 00:00:41,760 --> 00:00:44,520 But let's talk about them again now. 8 00:00:44,940 --> 00:00:52,590 These thin antenna capacitive touch sensors can be used as buttons, and there are numbers from general 9 00:00:52,590 --> 00:01:05,400 purpose input output number four zero two, 12, 13, 14, 15, 23 or 32, 33 and 27. 10 00:01:06,270 --> 00:01:10,940 These are the pins I will show you means no in a minute. 11 00:01:10,940 --> 00:01:11,300 OK? 12 00:01:14,250 --> 00:01:23,040 OK, this is it, and you can refer to the wiring layout or the pin diagram lesson where you can see 13 00:01:23,580 --> 00:01:24,330 these pins. 14 00:01:24,900 --> 00:01:30,960 These are 10 internal capacitive touch sensors that you can easily use. 15 00:01:31,950 --> 00:01:40,990 In order to leave these pins, what you need to do is use the function touch read, and this function 16 00:01:40,990 --> 00:01:51,250 will take only one variable, which is basically this is the function that usually takes one variable, 17 00:01:51,250 --> 00:01:57,550 which is the pin number, the symbol, number four, number five, and so on. 18 00:01:58,710 --> 00:01:59,160 So. 19 00:02:00,840 --> 00:02:06,360 In order to use this function first, we need to assign a variable. 20 00:02:08,070 --> 00:02:12,960 Now we can't right and value. 21 00:02:19,480 --> 00:02:21,040 And I touch read. 22 00:02:24,630 --> 00:02:30,900 Inside that, we call out any number we can use general purpose Input-Output, for which basically the 23 00:02:30,900 --> 00:02:33,060 first touch sensor t0. 24 00:02:33,870 --> 00:02:37,170 And now let's create a code. 25 00:02:37,290 --> 00:02:44,320 Where do we read the state of this touch sensor and submit on the serial monitor to do this? 26 00:02:44,370 --> 00:02:46,380 First, you need to. 27 00:02:47,630 --> 00:02:53,860 Initialize the zero communication in the setup method, as you can see between these two curly parentheses, 28 00:02:54,740 --> 00:03:00,650 so what cereal dots begin 29 00:03:03,500 --> 00:03:09,720 and use any Mod. We can use 150000 200s. 30 00:03:10,130 --> 00:03:13,940 And let's add some delay to help it 31 00:03:17,030 --> 00:03:17,810 stabilize 32 00:03:22,520 --> 00:03:23,330 one second. 33 00:03:24,200 --> 00:03:24,680 Now. 34 00:03:25,820 --> 00:03:27,290 Let's try this nonsense. 35 00:03:27,410 --> 00:03:29,480 Let's try cereal, dot, print. 36 00:03:37,010 --> 00:03:38,390 Yes, beef as a tool. 37 00:03:42,220 --> 00:03:42,760 Touch. 38 00:03:47,850 --> 00:03:59,130 Just now we have to set the pin moment for us output, we want to use the LEDs as an indicator for the 39 00:03:59,130 --> 00:04:02,320 touch straight or touch sensor state. 40 00:04:03,150 --> 00:04:10,740 So we have pin number two, which has the lid and we need it as output. 41 00:04:13,470 --> 00:04:19,620 We also need to write a value and make sure that it equals zero. 42 00:04:21,000 --> 00:04:24,330 We want to make sure that the lid is off. 43 00:04:26,670 --> 00:04:30,300 To do so, we need to write the pin number and light law. 44 00:04:31,230 --> 00:04:40,170 Using this line, we are making sure that when the esports starts, it will make sure that that it is 45 00:04:40,170 --> 00:04:40,530 off. 46 00:04:41,010 --> 00:04:46,050 It will only turn on if there is touch all of the touch sensors on. 47 00:04:47,830 --> 00:04:55,510 OK, now what we need to do next is read the value Dutch read using Dutch read and stored up inside 48 00:04:55,510 --> 00:04:56,080 the value. 49 00:04:56,920 --> 00:05:05,800 Now we want to ask a question if the Dutch value is above or below a certain value, we can turn on 50 00:05:05,800 --> 00:05:06,640 or off than it. 51 00:05:09,120 --> 00:05:15,270 But before we do that, we can't simply print the touch, read or the value that we get from a speed 52 00:05:15,270 --> 00:05:19,080 sensor, which is the capacitive touch sensor on the serial monitor. 53 00:05:19,230 --> 00:05:30,020 So let's get let's do this serial dot print online and inside it. 54 00:05:30,030 --> 00:05:31,650 We need to place the value. 55 00:05:33,300 --> 00:05:38,520 After that, we can add a delay on second delay. 56 00:05:40,720 --> 00:05:42,670 Now, let's try combining our code. 57 00:05:45,030 --> 00:05:47,040 Let's store it inside. 58 00:05:51,150 --> 00:05:52,410 Our coding folder. 59 00:05:52,560 --> 00:05:53,430 It's called a touch 60 00:05:56,100 --> 00:05:57,080 screen example. 61 00:06:04,740 --> 00:06:06,030 OK, let's remove this. 62 00:06:09,930 --> 00:06:11,400 Now let's combine it again. 63 00:06:22,980 --> 00:06:24,640 OK, Duncan boiling. 64 00:06:24,780 --> 00:06:28,410 Now let's upload the code to our ISP board. 65 00:06:48,020 --> 00:06:56,060 By the way, you can use number four, which is the pin number, or you can use t0 do you 182 up to 66 00:06:56,060 --> 00:07:02,450 210 because we already mentioned that we have, uh, 10 touch sensors. 67 00:07:04,130 --> 00:07:06,260 Now let's open up the serial monitor. 68 00:07:07,790 --> 00:07:08,040 OK. 69 00:07:08,120 --> 00:07:12,560 As you can see, that much value here is hundreds. 70 00:07:14,320 --> 00:07:19,540 And seven, and if we did touch it, it will change. 71 00:07:19,840 --> 00:07:20,730 Let me do that. 72 00:07:22,410 --> 00:07:28,830 OK, now, as you can see, we have 74, 37, 71, 70. 73 00:07:28,860 --> 00:07:30,330 Now let me touch the bin. 74 00:07:33,710 --> 00:07:39,680 As you can see, once I touched up in the values of goal below then. 75 00:07:41,650 --> 00:07:42,820 And when I leave it. 76 00:07:44,080 --> 00:07:47,290 Goes again up to seventy seven to two. 77 00:07:47,860 --> 00:07:51,970 So I think that we have a consistent value here. 78 00:07:52,030 --> 00:07:56,110 If the value is below 50 means that I'm touching the pain. 79 00:07:56,470 --> 00:08:00,070 If it is above 50 means that I'm not touching the pin. 80 00:08:00,190 --> 00:08:02,620 We can adjust our code accordingly. 81 00:08:02,740 --> 00:08:03,820 Now let's do that. 82 00:08:05,790 --> 00:08:07,650 Now let's go here. 83 00:08:07,770 --> 00:08:18,270 And if statement now in that statement, we are going to ask a question, the value is above. 84 00:08:19,680 --> 00:08:22,020 Or equal 50. 85 00:08:24,180 --> 00:08:26,100 And it's more of this side, these. 86 00:08:27,380 --> 00:08:32,210 So she is now in that case, we need to turn on the red. 87 00:08:36,570 --> 00:08:38,250 And add a delay. 88 00:08:41,080 --> 00:08:41,590 Ms. 89 00:08:46,630 --> 00:08:48,340 If the value is. 90 00:08:50,480 --> 00:08:51,470 Below 50, 91 00:08:54,500 --> 00:08:55,130 we need. 92 00:08:57,700 --> 00:08:58,900 To turn that off. 93 00:09:04,490 --> 00:09:06,770 OK, now let's verify our code. 94 00:09:13,220 --> 00:09:21,110 Oh, and let's print a sentence, and so these two statements using the serial print. 95 00:09:22,430 --> 00:09:26,870 So he is going to print lead on. 96 00:09:32,110 --> 00:09:36,040 And he is going to try and let off. 97 00:09:38,590 --> 00:09:40,150 Let's verify the court again. 98 00:09:51,130 --> 00:09:57,430 OK, now let's applaud, according to the SB 32 board again. 99 00:09:58,300 --> 00:10:00,130 The process takes some time. 100 00:10:05,040 --> 00:10:07,620 Now it's connecting to the board. 101 00:10:09,450 --> 00:10:11,310 Now it's writing the code. 102 00:10:11,670 --> 00:10:13,090 OK, done uploading. 103 00:10:13,110 --> 00:10:17,790 Now, if we open up the serial monitor, as you can see, the light is on. 104 00:10:18,630 --> 00:10:23,460 And if you take a look to your board, you can see that the lid is on. 105 00:10:25,190 --> 00:10:33,620 Now, let me touch the Touch Pen, as you can see, the value goes below 50 and the lid is off. 106 00:10:37,930 --> 00:10:38,500 That's it. 107 00:10:38,800 --> 00:10:46,570 This is how easily you can use and adjust the touch sensor inside the SB 32 board. 108 00:10:46,720 --> 00:10:53,200 It's built in so you don't have to connect any extra components. 109 00:10:53,440 --> 00:10:58,060 This is how amazing it is and how easy it is to deal with this ball. 110 00:10:58,450 --> 00:11:02,020 If you have any questions regarding this pen, I'm here to help you. 111 00:11:02,590 --> 00:11:03,680 Thanks for watching this lesson. 112 00:11:03,700 --> 00:11:06,130 This is Usha from educational engineering team.