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LANDZO UNO R3 Microcontroller Board with USB for Arduino (UNO R3)

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Specifications
Size :53.4mm * 75mm
Master chip :ATMEGA328 Microcontrollers
USBLine Power Supply:5v
External power supply:7-12v, Suggested 9v
Digital inputs/Output pin14(Where6A support PWM)
Analog input pins6Range
Built-in flash :32 KB
SRAM:2k
EEPROM: 1K
Clock Frequency:16MH
Outer port :DC input,USB B square opening

Features
1 Change Pin : AREF pin plus next two I2C pins (SDA and SCL, just Analog 4 and copy 5 , not additional I2C interface ) , in addition, in the next RESET also added two pins , one is IOREF , allowing expansion board to adapt the onboard voltage , this pin expansion board just told what is currently onboard voltage ( such as UNO is 5V, can be seen as copy power pins , does not provide power to pull level on ) , and the other is the future stand placeholder pins.
2 more stable RESET circuit . RESET key position has changed, has been moved near the USB interface board corner , more convenient press.
3. ATmega16U2 instead 8U2, this does not mean there are 16K flash of R3 make your code run faster , this update is the USB interface chip services , in theory, it allows UNO can simulate USB HID, such as MIDI / Joystick / Keyboard.

LANDZO Electronic brand introduction
LANDZO Electronic technology co., LTD Was established in May 2011,is an independent design of high-tech enterprises with production ability.The company is committed to smart series of hardware modules,smart hardware learning platform ,maker space and open source development board design.
LANDZO Electronic became Arduino China authorized agent in November 2015.Landzo unite NXP,ARM and Arduino to build Landzo united laboratory for one hundred colleges and universities.More stable RESET circuit,more convenient press
Allowed UNO can simulate USB HID, such as MIDI / Joystick / Keyboard
Allowed expansion board to adapt the onboard voltage
16K flash of R3 make your code run faster

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