NOT Gate Interpretation in Ayantrik Lab

TL;DR: In this project we simulate the behavior of a NOT logic gate using an Arduino, one slide switch, and an LED in Ayantrik Lab. The switch acts as input, the NOT gate inverts the logic, and the LED turns ON when the input is LOW and turns OFF when the input is HIGH.

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The Problem / Why This Matters

Digital electronics works using logic gates, which are the fundamental building blocks of all digital systems.

Logic gates are used in:

• Computers
• Microcontrollers
• Embedded systems
• Robotics
• Digital circuits

Before learning advanced electronics, it is important to understand basic logic gates. One of the simplest logic gates is the NOT Gate.

The NOT gate is also called an Inverter, because it reverses the input signal.

In this tutorial, we simulate the NOT gate using Ayantrik Lab, so we can understand how inverted logic works without building the circuit physically. Try it here

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Basic Theory of NOT Gate

A NOT Gate has:

• One input (A)
• One output (Y)

The output is always the opposite of the input.

Boolean Expression

Y = A'

This means output is NOT of A.

If input is 1 → output is 0 If input is 0 → output is 1

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Truth Table of NOT Gate

Explanation:

• Input LOW → Output HIGH
• Input HIGH → Output LOW

In this project:

• Slide Switch → Input A
• NOT Gate → Logic processor
• LED → Output indicator

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Prerequisites

Components used in this project:

• Arduino Uno
• Slide Switch
• NOT Gate
• LED

All components are available in Ayantrik Lab component library.

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Steps to Create the Project in Ayantrik Lab

1. Open a New Project

Open Ayantrik Lab and create a new project.

Create New Project

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2. Add Components

Click Add Components from the toolbar.

Toolbar

Search and drag the following components:

• Arduino Uno
• Slide Switch
• NOT Gate
• LED

Arrange them properly on the canvas.

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3. Make the Circuit Connections

NOT Gate Connection

Slide Switch Connection

Switch:

• Right → 5V
• COM → D2

This switch acts as digital input.

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Arduino to NOT Gate

• D12 → NOT Gate Input A

Arduino sends HIGH / LOW based on switch state.

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NOT Gate to LED

• NOT Gate Output (Y) → LED Anode
• LED Cathode → GND

LED shows the inverted output.

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Code

Upload the following Arduino code.

cpp
View full codeCopy code
const int swt1 = 2;
const int input1 = 12;

int swt1State = 0;

void setup() {

  pinMode(input1, OUTPUT);
  pinMode(swt1, INPUT);

}

void loop() {

  swt1State = digitalRead(swt1);

  if (swt1State == HIGH) {
    digitalWrite(input1, HIGH);
  } else {
    digitalWrite(input1, LOW);
  }

}

After writing the code, click Run from the toolbar to start the simulation.

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Expected Behavior

Try different switch positions.

This confirms the correct working of the NOT logic gate.

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Built-in Debugging in Ayantrik Lab

Ayantrik Lab provides a built-in debugging system that helps detect problems in both the circuit and the code.

Built-in debugging tool

The debugger can detect:

• Wrong connections
• Missing power or ground
• Incorrect pin mapping
• Code errors

This makes learning digital electronics easier, especially for beginners.

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Conclusion

In this tutorial, we simulated a NOT Gate using Arduino in Ayantrik Lab.

You learned:

• Basic digital logic theory
• Truth table of NOT gate
• How inversion works
• Using switches as inputs
• Controlling output using logic gate

NOT gate is very important because it is used in almost every digital circuit.

Try building more logic circuits like:

• AND Gate
• OR Gate
• NAND Gate
• NOR Gate
• XOR Gate

Happy learning with Ayantrik Lab !