📌 Arduino I2C ASSIGNMENT (For Tinkercad Simulation)

This repository contains two Arduino I2C projects designed for Tinkercad simulation.

• ✅ Project 1: Integer Input with LED and LCD
• ✅ Project 2: Slide Switch Guessing Game

Both projects use I2C communication between two Arduinos (Master: UNO, Slave: Nano/UNO).

---

📌 Project 1: Integer Input with LED and LCD

📝 Description

• Takes two integer inputs:
  • m (from Serial Monitor 1 on the Master - UNO).
  • n (from Serial Monitor 2 on the Slave - Nano/UNO).
• Checks condition:
  • If m > n: Blink LED (on Master) n times.
  • If m ≤ n: Show m on LCD (connected to Slave).

🔧 How It Works

m (Master Input)	n (Slave Input)	Result
5	4	Blink LED for 4 times
3	3	Show 3 on LCD
3	6	Show 3 on LCD

---

📌 Project 2: Slide Switch Guessing Game

📝 Description

• A slide switch is connected to UNO-2 (Master).
• User guesses the switch position by entering "left" or "right" in Serial Monitor.
• UNO-2 compares the guess with actual switch position:
  • If correct: Turn ON LED1 (UNO-2), Turn OFF LED2 (UNO-1/Nano).
  • If incorrect: Turn OFF LED1 (UNO-2), Turn ON LED2 (UNO-1/Nano).

🔧 How It Works (All 5 Cases)

Slide Switch Position	User Input (Serial Monitor-2)	LED1 (UNO-2)	LED2 (UNO-1/Nano)
left	"Left"	OFF	ON
left	"left"	ON	OFF
right	"back"	OFF	ON
right	"RIGHT"	OFF	ON
right	"right"	ON	OFF

🛠️ Hardware Used

• Arduino UNO (Master - UNO-2)
• Arduino Nano/UNO (Slave - UNO-1)
• I2C Communication (SDA → A4, SCL → A5)
• LCD 16x2 (I2C, Address: 0x27, Slave side)
• Slide Switch (Master side, connected to A0)
• LED1 (Pin 10 on Master - UNO-2)
• LED2 (Pin 11 on Slave - UNO-1/Nano)
• Resistors (220Ω for LEDs)

---

🚀 How to Use (Tinkercad Simulation)

1. Set up the circuit in Tinkercad with two Arduinos (UNO & Nano/UNO).
2. Upload master.ino to Arduino UNO (Master).
3. Upload slave.ino to Arduino Nano/UNO (Slave).
4. Open Serial Monitor for both boards.
5. For Project 1: Enter values for m and n in respective Serial Monitors.
6. For Project 2: Move the slide switch and enter a guess in Serial Monitor.