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Arduino Leonardo
Arduino with integrated native USB that allows it to act as an HID device (keyboard, mouse). Ideal for human interface projects and computer control.
APPROX. PRICE
$20-30
DIFFICULTY
Medium
BEST FOR
Projects
SPEED
16 MHz
🚀 Get Started Now
🎯 Essential Arduino Leonardo
✅ Advantages
- • Compact size
- • Easy prototyping
- • Good price/performance ratio
⚠️ Limitations
- • Limited resources
- • No advanced connectivity
⚖️ Quick Comparison vs Alternatives
| Feature | Arduino Leonardo | Arduino Uno | ESP32 |
|---|---|---|---|
| Wi-Fi | ❌ No | ❌ No | ❌ No |
| Price | $20-30 | $20-30 | $35-45 |
| Difficulty | Medium | Easy | Medium |
📋 Technical Specifications
Microcontroller
ChipATmega32U4
ArchitectureAVR
Clock Speed16 MHz
Memoria
Flash Memory32 KB
SRAM2.5 KB
EEPROM1 KB
Alimentación
Operating Voltage5 V
Input Voltage7-12 V (recomendado), 6-20 V (límite)
USBMicro USB
Entradas/Salidas
Digital I/O20 (7 PWM)
Analog I/O12 (0 DAC)
Dimensions68.6 x 53.3 mm
Communication
UARTSPII2CUSB
Features
Native USB
HID emulation
12 analog inputs
Shield compatible
Simple programming
Applications
Keyboard simulator
Mouse control
HID interfaces
Interactive games
PC automation
🛠️ Popular Projects with Arduino Leonardo
🤖
Line Following Robot
Robot that follows lines with IR sensors and motors.
Components: IR sensors, DC motors, L298N driver
📊
Data Logger
Log data from multiple sensors to SD card.
Components: MicroSD, RTC, Sensors
🎵
Electronic Piano
Keyboard with buttons and buzzer to play melodies.
Components: Buttons, Buzzer, Resistors
💻 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 Leonardo?
✅ Buy if:
- • Complex projects
- • Many sensors
- • Advanced robotics
- • Multiple communications
❌ Don't buy if:
- • Simple project
- • Limited budget
- • Size matters
🏪 Where to Buy
Official Store$20-30
Amazon$15-25
AliExpress$8-15
💡 Tip: For critical projects, buy original. For learning, clones work fine.
📦 Recommended Kit
Arduino Leonardo
USB Cable
Breadboard
Jumper wires
LEDs + Resistors
🎯 Final Verdict
This board is ideal for specific projects that require particular features. Evaluate if you really need its specific capabilities.
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