Arduino Uno Rev3
The most popular and widely used Arduino board. Perfect for beginners and educational projects. Based on the ATmega328P microcontroller with a robust and easy-to-use architecture.
🚀 Get Started Now
🎯 Essential Arduino Uno Rev3
✅ Advantages
- • Perfect for beginners
- • Maximum compatibility
- • Extensive documentation
- • Large community
- • Abundant shields
⚠️ Limitations
- • No Wi-Fi/Bluetooth
- • Few pins (14 digital)
- • Limited speed (16 MHz)
- • Low Flash memory (32KB)
⚖️ Quick Comparison vs Alternatives
| Feature | Arduino Uno Rev3 | ESP32 | Arduino Mega |
|---|---|---|---|
| Wi-Fi | ❌ No | ✅ Sí | ❌ No |
| Price | $20-30 | $10-15 | $35-45 |
| Difficulty | Easy | Medium | Medium |
📋 Technical Specifications
Microcontroller
Memoria
Alimentación
Entradas/Salidas
Communication
📸 Visual Gallery
Arduino Uno - Overview
Complete view of the Arduino Uno Rev3 board showing all main components
Arduino Uno Pinout
Detailed Arduino Uno pin diagram showing digital, analog, PWM and communication functions
Basic Connections
Basic connection example: LED, resistor and sensor on breadboard
Uno vs Mega
Size and pin comparison between Arduino Uno and Arduino Mega 2560
Popular Projects
Typical project examples: LED control, sensor reading and motor control
🔍 Quick Visual Guide
📌 Essential Pinout:
- • Pins 0-13: Digital (PWM: 3,5,6,9,10,11)
- • Pins A0-A5: Analog (input)
- • GND, 5V, 3.3V: Power supply
🔌 Common Connections:
- • LED → Pin 13 (built-in)
- • Servo → Pin 9 (PWM)
- • Temp sensor → Pin A0
Features
Applications
🛠️ Popular Projects with Arduino Uno Rev3
LED Traffic Light
First project: LED control with timers.
Digital Thermometer
LM35 sensor + LCD to display temperature.
PIR Alarm
Motion sensor with buzzer and alert LED.
💻 Quick Start Code
// Basic blinking LED
void setup() {
pinMode(13, OUTPUT);
}
void loop() {
digitalWrite(13, HIGH);
delay(1000);
digitalWrite(13, LOW);
delay(1000);
}
// Analog sensor reading
void readSensor() {
int sensorValue = analogRead(A0);
float voltage = sensorValue * (5.0 / 1023.0);
Serial.println(voltage);
}🛒 Buying Guide
🤔 Should I buy the Arduino Uno Rev3?
✅ Buy if:
- • You are a beginner
- • You want maximum compatibility
- • Educational projects
- • Abundant tutorials
❌ Don't buy if:
- • You need WiFi
- • Many sensors (>10)
- • IoT project
🏪 Where to Buy
💡 Tip: For critical projects, buy original. For learning, clones work fine.
📦 Recommended Kit
🎯 Final Verdict
Arduino Uno remains the gold standard for beginners. Maximum compatibility, extensive documentation and huge community. Your safe first purchase.
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