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Description

Main Features:
Pin changes
Two I2C pins are added next to the AREF pin (SDA and SCL are just copies of Analog 4 and 5, not an additional I2C interface). In addition, two pins are added next to RESET, one is IOREF, which allows expansion boards Adapt to the onboard voltage, this pin only tells the current onboard voltage of the expansion board (for example, UNO is 5V, which can be regarded as a copy of the power pin, and does not provide level pull-up), and the other is a place to be used later Pins.

More stable RESET circuit
The position of the RESET button has also changed, and it has been moved to the corner of the board near the USB interface, making it easier to press.

ATmega16U2 replaces 8U2
This does not mean that R3 with 16K flash can make your code run faster. This update is for the USB interface chip. In theory, it allows UNO to simulate USB HID, such as MIDI/Joystick/Keyboard.

Feature description
Open the circuit diagram of the original design, the development software interface is free to download, and you can also modify it yourself according to your needs. The downloading program is simple and convenient. You can simply use sensors and various electronic component connections (such as: LED lights, buzzers, buttons, photoresistors, etc.) to make a variety of interesting works.
Using a high-speed microprocessor controller (ATMEGA328), the development operation interface and environment are very simple and easy to understand, which is very suitable for beginners to learn.

Performance description
Digital I/O Digital input/output terminals are 0~13 in total.
Analog I/O Analog input/output terminals are 0~5 in total.
Support ISP download function.
Input voltage: No external power supply is required when connected to the computer USB, external power supply is 5V~9V DC voltage input.
Output voltage: 5V DC voltage output and 3.3V DC voltage output.
Using Atmel Atmega328 microcontroller.

Specification

General

Type: Development board
Material: Electronic component

Dimensions and Weight

Product weight: 0.0400 kg
Package weight: 0.0600 kg
Product size (L x W x H): 7.50 x 5.30 x 1.00 cm / 2.95 x 2.09 x 0.39 inches
Package size (L x W x H): 9.00 x 7.00 x 2.00 cm / 3.54 x 2.76 x 0.79 inches

Package Contents

Package Contents: 1 x Development Board, 1 x USB Cable

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Specification

General

Type: Development board
Material: Electronic component

Dimensions and Weight

Product weight: 0.0400 kg
Package weight: 0.0600 kg
Product size (L x W x H): 7.50 x 5.30 x 1.00 cm / 2.95 x 2.09 x 0.39 inches
Package size (L x W x H): 9.00 x 7.00 x 2.00 cm / 3.54 x 2.76 x 0.79 inches

Package Contents

Package Contents: 1 x Development Board, 1 x USB Cable

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