Smart Dispenser System Using Arduino with Ultrasonic Sensor & LCD Display

# **Smart Dispenser System Using Arduino with Ultrasonic Sensor & LCD Display**

## **Description**
This **Arduino-Based Smart Dispenser** is an automated dispensing system that detects hand proximity using an **ultrasonic sensor (HC-SR04)** and dispenses liquid, sanitizer, or any other material via a pump. The system includes a **16×2 LCD display** for real-time feedback and runs on a **battery backup** for portability. Ideal for **touchless sanitizer dispensers, automated soap dispensers, or smart liquid management**, this project is perfect for **home, office, or public hygiene applications**.

### **Key Features:**
✔️ **Touchless Operation** – Ultrasonic sensor detects hand movement
✔️ **LCD Display** – Shows status (e.g., “Place Hand,” “Dispensing”)
✔️ **Battery-Powered** – Portable with rechargeable battery support
✔️ **Adjustable Dispensing Time** – Control pump duration via code
✔️ **Low-Cost & Easy to Build** – Great for beginners & IoT projects

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## **Components Required**
1. **Arduino Uno/Nano** (Microcontroller)
2. **Ultrasonic Sensor (HC-SR04)** – Detects hand proximity
3. **16×2 LCD Display (I2C or Parallel)** – Shows system status
4. **DC Pump or Solenoid Valve** – For dispensing liquid
5. **Relay Module** – Controls the pump (if high voltage)
6. **5V Power Bank / 9V Battery** – Battery backup for portability
7. **Breadboard & Jumper Wires** – For circuit connections
8. **Resistors & Potentiometer** (if using non-I2C LCD)

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## **Best SEO-Optimized Description**
**”Build a Touchless Smart Dispenser with Arduino & Ultrasonic Sensor!** 🚰 This **DIY automatic dispenser** uses an **HC-SR04 sensor** to detect hand presence and activates a pump for touch-free operation. The **16×2 LCD** provides real-time feedback, while the **battery backup** ensures portability—ideal for **sanitizer, soap, or water dispensers**. Perfect for **hygiene-conscious users, STEM projects, and IoT beginners**, this project teaches **Arduino programming, sensor interfacing, and automation**. Upgrade it with **Wi-Fi/Bluetooth for smart monitoring!** #Arduino #SmartDispenser #TouchlessTech #DIYEletronics”

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### **Why Build This Project?**
✅ **Promotes Hygiene** – No-touch operation reduces germ spread
✅ **Learn Sensor Integration** – Ultrasonic + LCD + motor control
✅ **Customizable** – Adjust sensitivity, add IoT, or use different liquids
✅ **Great for Portability** – Battery-powered for flexible placement

https://youtube.com/shorts/seAb7x5kBDA