Servo motors end to end — how they work, horns, parts, pinouts, SG90 vs MG90S vs MG995 — then a Smart Parking System: an IR sensor detects a vehicle, the servo opens the gate, the OLED shows status, and red/green LEDs signal availability.

Objectives: Explain servo operation and PWM angle control · Choose a servo for a load · Combine sensor input with actuator output · Build a multi-output state machine

Components: Arduino Uno · IR sensor · servo (SG90/MG90S) · SSD1306 OLED · red & green LEDs · 220Ω resistors

Code: https://github.com/Arun-Roshan/Smart-Parking-System-using-Arduino-Uno.git — Smart Parking repo

Chapters: Intro · Servo motor · Real-life applications · Horn · Parts · Pinout · Types · How they work · Wiring · Smart parking project · Demo · Code explained