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This UNO R3 board is 100% compatible with original one, now it has perfect quality and performance .
The TOSduino Uno R3 requires the 1.0 drivers folder in order to install properly on some computers. We have tested and confirmed that the R3 can be programmed in older versions of the IDE. However, the first time using the R3 on a new computer, you will need to have Arduino 1.0 installed on that machine.
The small chip is ATmega16U2, the 28 pin DIP socket chip is ATmega328-pu.
Digital I / O digital input / output terminal: 0 to 13.
Analog I / O Analog inputs / outputs: 0 to 5.
Support ISP download function.
Input voltage: No external power supply when connected to the computer USB, external power supply 5V ~ 9V DC voltage input.
Output voltage: 5V / 3.3V DC.
Using At mel Atmega328 microprocessor controller.
Dimensions: 79.5 x 64.5 x 21mm
For Arduino UNO R3 Development Board only
1 x UNO R3
1 x USB cable
1 x Case