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Keyestudio Leonardo R3 Board KS0248

Keyestudio Leonardo R3 Board KS0248

The Keyestudio Leonardo is a powerful development board designed around the high-performance "ATmega32U4" MCU, offering unparalleled versatility. With its integrated USB interface, it can be easily configured as either a keyboard or a mouse when connected to a PC. Compared to the Arduino Uno, the Keyestudio Leonardo boasts 20 digital input/output pins, 7 of which feature PWM capabilities, along with 12 analog input pins for seamless integration of analog sensors. This makes it an ideal choice for hobbyists, tinkerers, and seasoned developers alike.

75.00 AED 75.00 AED Tax Included
75.00 AED Tax Included

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Features

  • Microcontroller: ATmega32U4
  • Operating Voltage: 5V
  • Input Voltage: 5–12V
  • Micro USB connection for programming and communication
  • 20 Digital I/O pins, 7 PWM-capable
  • 12 Analog input pins (A0–A11)
  • RX/TX Serial Port
  • Flash Memory: 32KB
  • SRAM: 2.5KB
  • Clock Speed: 16MHz
  • 5V voltage regulator
  • Onboard LED (pin 13)

 

Principle of Work

  1. Microcontroller: ATmega32U4 handles all computational tasks and controls I/O operations.
  2. USB Interface: Enables configuration as a keyboard or mouse and direct communication with a PC.
  3. Digital I/O: 20 pins for input/output operations; 7 PWM-capable for precise control.
  4. Analog Inputs: 12 pins to read analog signals from sensors.
  5. UART Serial Communication: Dedicated Rx and Tx pins for data exchange.

Pinout

Keyestudio Leonardo Pinout

Applications

  • Prototyping and DIY electronics
  • Robotics and automation
  • Home automation
  • IoT devices
  • Wearable electronics
  • Interactive art and installations
  • Data acquisition and monitoring
  • Educational tool for electronics and programming
  • Gaming and virtual reality controllers
  • Environmental monitoring and audio projects

Getting Started

  1. Install Arduino IDE from the official website.
  2. Connect the board to your computer via a data USB cable.
  3. Select Leonardo under Tools → Board.
  4. Select the correct COM port under Tools → Port.
  5. Upload your sketch and open the Serial Monitor if needed.

Example Code

const int ledPin = 13;
const unsigned long blinkInterval = 1000;
bool ledState = false;
unsigned long previousMillis = 0;

void setup() {
pinMode(ledPin, OUTPUT);
Serial.begin(9600);
}

void loop() {
unsigned long currentMillis = millis();
if (currentMillis - previousMillis >= blinkInterval) {
previousMillis = currentMillis;
ledState = !ledState;
digitalWrite(ledPin, ledState);
Serial.println(ledState ? "LED is ON" : "LED is OFF");
}
}

Technical Details

  • CPU: 8-bit
  • Microcontroller: ATmega32U4
  • Operating Voltage: 5V
  • Input Voltage Max: 12V
  • DC Current per I/O Pin: 40 mA
  • DC Current for 3.3V Pin: 50 mA
  • PCB Dimensions: 71 × 54 × 15 mm
  • Weight: 18.4g