1 00:00:09,000 --> 00:00:10,000 Hello, friends. 2 00:00:10,000 --> 00:00:20,000 Today I will tell you how to acquire multiple analog signal using a USB DAC card with the help of Python 3 00:00:20,000 --> 00:00:21,000 programming. 4 00:00:21,000 --> 00:00:26,000 In the previous video I just use for single channel. 5 00:00:26,000 --> 00:00:32,000 As you see import DAC max with DAC Mac task as task. 6 00:00:32,000 --> 00:00:34,000 It is set for analog input. 7 00:00:35,000 --> 00:00:38,000 Analog input voltage device one is zero. 8 00:00:38,000 --> 00:00:41,000 The value it is a variable. 9 00:00:41,000 --> 00:00:43,000 It will take the value. 10 00:00:43,000 --> 00:00:52,000 Using task read print value task two and the for hardware part, I just use differential mode. 11 00:00:52,000 --> 00:00:56,000 This one over here, this point. 12 00:00:56,000 --> 00:00:58,000 This pin is my ground. 13 00:00:58,000 --> 00:01:01,000 Then I have analog input. 14 00:01:01,000 --> 00:01:02,000 0I0. 15 00:01:02,000 --> 00:01:07,000 Then I have I for these three pins are used for single channel. 16 00:01:07,000 --> 00:01:18,000 In this case of differential, I just ground I four also and I zero is my input pin for the potentiometer. 17 00:01:18,000 --> 00:01:19,000 As you see over here. 18 00:01:19,000 --> 00:01:20,000 My potentiometer is connected. 19 00:01:20,000 --> 00:01:23,000 Now I just use a touch sensor. 20 00:01:23,000 --> 00:01:25,000 As you see over here. 21 00:01:25,000 --> 00:01:27,000 This is a capacitive touch sensor. 22 00:01:27,000 --> 00:01:30,000 In this module we have signal VCC and ground. 23 00:01:30,000 --> 00:01:33,000 I just ground to the ground. 24 00:01:33,000 --> 00:01:41,000 Connect ground to the ground VCC to the positive pin of plus five volt and signal pin goes to directly 25 00:01:41,000 --> 00:01:48,000 my AI1 analog input one and in the in this case it is also differential mode. 26 00:01:48,000 --> 00:01:50,000 Ground is grounded. 27 00:01:50,000 --> 00:01:57,000 I is connected to the signal pin of touch sensor and I five that is analog input five is grounded. 28 00:01:57,000 --> 00:01:59,000 So this is the hardware connection. 29 00:01:59,000 --> 00:02:05,000 Now in the software part, I just copy this part. 30 00:02:06,000 --> 00:02:11,000 Enter and paste it. 31 00:02:11,000 --> 00:02:21,000 So as you see over here in this case, task analog input over here, PIN number is zero. 32 00:02:21,000 --> 00:02:29,000 And over here I want to just use I1I0 will take values from the potentiometer. 33 00:02:29,000 --> 00:02:34,000 It will take values or it will read values from the potentiometer. 34 00:02:34,000 --> 00:02:40,000 And I one it will read touch sensor value. 35 00:02:40,000 --> 00:02:48,000 Touch sensor I can use in both way it will generate digital signal or analog signal. 36 00:02:48,000 --> 00:02:56,000 In the case of analog signal, it just provide the value that is nearly about five volt and in the not 37 00:02:56,000 --> 00:03:01,000 touching case it will generate a value nearly around ground that is zero volt. 38 00:03:01,000 --> 00:03:08,000 So over here the PIN number is changed, the variable is also changed, name is also changed. 39 00:03:08,000 --> 00:03:10,000 So now the code is ready. 40 00:03:10,000 --> 00:03:14,000 Ctrl s to save now hit on run button. 41 00:03:14,000 --> 00:03:18,000 So let's check what is the value it will read. 42 00:03:21,000 --> 00:03:29,000 So now it is the value from potentiometer and this value is from the touch sensor. 43 00:03:29,000 --> 00:03:39,000 Now I just put my finger on touch sensor and I just move the potentiometer in anticlockwise direction. 44 00:03:39,000 --> 00:03:42,000 Again, I want to just run the code. 45 00:03:42,000 --> 00:03:44,000 Let's check what happened. 46 00:03:47,000 --> 00:03:55,000 As you see, 5.036 something value I got and the value of the potentiometer is 1.5593. 47 00:03:56,000 --> 00:04:00,000 Again, I just change the potentiometer value and again hit on run button. 48 00:04:00,000 --> 00:04:03,000 Now I'm just removing my finger from the potentiometer. 49 00:04:03,000 --> 00:04:11,000 Now it is the 2.70 and the value is for the touch sensor is 0.1042. 50 00:04:12,000 --> 00:04:21,000 So this is how you can read analog multiple analog signals using an I USB 6009 DAC card with the help 51 00:04:21,000 --> 00:04:28,000 of Python programming for continuous reading, you just go for for loop or while loop. 52 00:04:28,000 --> 00:04:31,000 So this is all about today's lecture. 53 00:04:31,000 --> 00:04:31,000 Thank you.