| Quantity | 3+ units | 10+ units | 30+ units | 50+ units | More |
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| Price /Unit | $24.49 | $23.99 | $23.24 | $22.24 | Contact US |
LILYGO Grey Shell Version T-Display-S3 1.9-inch LCD Display Development Board WiFi Bluetooth5.0 Wireless Module for Arduino
$32.47
Sketchboard Mechanical Arm Plotter Robot Arm Students Programming Learning DIY Kit for Arduino
$44.05
Ultrasonic Radar Programming Learning Kit MG90S Metal Gear Servo Motor Ultrasonic Detector 2 for Arduino DIY
$34.48
DFRobot Leonardo & xbee R3 New Version Compatible with Arduino Leonardo R3
Overview:
- The Arduino Leonardo is a microcontroller board based on the ATmega32u4 (datasheet). It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
- The Leonardo differs from all preceding boards in that the ATmega32u4 has built-in USB communication, eliminating the need for a secondary processor. This allows the Leonardo to appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC) serial / COM port. It also has other implications for the behavior of the board; these are detailed on the getting started page.
Summary:
- Microcontroller:ATmega32u4
- Operating Voltage:5V
- Input Voltage (recommended):7-12V
- Input Voltage (limits):6-20V
- Digital I/O Pins:20
- PWM Channels:7
- Analog Input Channels:12
- DC Current per I/O Pin:40 mA
- DC Current for 3.3V Pin:50 mA
- Flash Memory:32 KB (ATmega32u4) of which 4 KB used by bootloader
- SRAM:2.5 KB (ATmega32u4)
- EEPROM:1 KB (ATmega32u4)
- Clock Speed:16 MHz
