Sainsmart Leonardo R3 ATMEGA32U4 + IIC LCD 2004 White USB Cable Kit For Arduino

brand: SainSmart SKU: 20-011-D09 Variants ID: 45100461396



This is a new SainSmart Leonardo R3 kit, which is easy for Arduino fans and starters to plug and play, containing one SainSmart Leonardo R3, one SainSmart IIC LCD2004.


SainSmart Leonardo R3 Improved Version Board

The SainSmart Leonardo is a microcontroller board based on the ATmega32u4 . 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.



Operating Voltage 


Input Voltage (recommended) 


Input Voltage (limits) 


Digital I/O Pins 


PWM Channels 


Analog Input Channels 


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


2.5 KB (ATmega32u4)


1 KB (ATmega32u4)

Clock Speed

16 MHz

SainSmart IIC/I2C/TWI Serial 2004 20x4 LCD Module

IIC LCD2004-character LCD display module, a new high-quality 4 line 20 character LCD module not only set the contrast control knob selector switch also has a backlight and IIC communication interface. For Arduino beginners, not for the cumbersome and complex LCD driver circuit connection and a headache, the real significance of this LCD module will simplify the circuit, this module directly into the Arduino Sensor Shield V5.0 sensor expansion board IIC device interface can, GM 4P sensor connection cable, programmed through the Arduino controller, you can easily identify the slogan, sensor data records


  • Interface: I2C
  • I2C Address: 0x3F or 0x27
  • Pin Definition : GND,VCC,SDA,SCL
  • Back lit (White with Black char color)
  • Supply voltage: 5V
  • Pcb Size : 60mmX99mm
  • Contrast Adjust :  Potentiometer
  • Backlight Adjust : Jumper

Package List:

1. 1x SainSmart Leonardo R3 board

2. 1X SainSmart IIC/I2C/TWI 2004 Serial LCD Module(White)

3. 1X USB cable