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Hello friends.

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Today I will tell you how to read multiple digital signals using visa or using serial connections with

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the help of LabVIEW and Arduino.

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So over here I have a Arduino code, as you already know, in the case of Serial Read, we just first

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install a code inside the Arduino.

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So in my previous video I just use for LDR only one LDR.

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In this case I just use two LDR over here.

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First, this is my first LDR, this is my second LDR and this is my output pins pin number eight and

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PIN number nine.

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I just use over here.

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So over here, as you see, LDR one is connected to PIN number eight.

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LDR two is connected to PIN number nine.

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Over here I just use two variables variable one, variable two.

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And these are my integer types.

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So over here I just use a character also that is s, and in this case I just use two values.

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I just read serially.

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So over here, in this case, the data is like a b, b, c, c, b like this.

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Two characters are there.

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Okay, so void setup Serial.begin pinmode.

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Set for LDR one input pinmode set for LDR two is again input.

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Okay, so over here I just go to the loop over here.

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Variable v r1 digital read from LDR 1VR2 digital read from LDR two.

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Over here I have the condition if var one is equal to high, so S00 stands over here.

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The indexing for character zero.

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So it is equal to a else it equal to b.

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If var one is high, in this case it will print A in this character.

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Otherwise it will print B in the war.

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Two if it is high, if the PIN number nine will read high signal, it will generate it indexing one

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or means character to C, then otherwise it will generate B and over here I just use serial print.

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Ln okay, so this is the code.

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Now I just select the board Arduino Uno board.

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It is selected Compot.

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It is selected hit on run button.

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Now the code is burned into the Arduino.

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Now, I just go to the case of LabVIEW.

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As you see in the previous case, we just use for single comparison right now, I just copy it.

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And over here, as you see, this is my string subset.

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It is connected to the main string.

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And over here, this is my sub string two.

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And it is when it is equal to C, in this case it will turn on the Led two and when it is equal to a

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it will turn on LDR one or LDR two.

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Okay.

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So this is how when I just hit on run button, you have to need to set your com port over here.

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I just hit on run button.

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As you see, B.B. is there because no high signal is there.

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When I just put my hand over LDR to it will generate high signal and it will buffer the data.

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And when I just go for LDR one, it will generate signal for a So this is how and when I just close

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both the right now these two will generate signal for me.

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Okay, so this is how and if you just in this case I just stop this, I just remove this delay signal

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and I just hit on run button again.

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Let's check what happened.

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As you see, same problem is there it is reading very continuously.

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So I just put over here the delay of only one second.

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Let's check one millisecond, not one second.

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It is one millisecond, as you see.

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So it will run now.

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So this is how you can read serially.

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So over here I just put five instead of one millisecond so it is stable for some seconds milliseconds.

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So this is how you can read signals using visa in serial mode.

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So this is all about today's lecture.

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Thank you.