Uno (CH340) is a microcontroller board based on the ATmega328P (datasheet). There are 14 digital input/output pins (of which 6 can be used as PWM outputs) in a package that also includes 6 analog inputs, 16 MHz quartz crystal, USB connection, power jack, ICSP header and reset button. It contains everything needed to support the microcontroller. In starting,you can simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery. You can tinker with your UNO without worrying too much about doing something wrong.
“Uno” means one in Italian was chosen to mark the release of Arduino Software (IDE) 1.0. The Uno board and version 1.0 of Arduino Software (IDE) were the reference versions of Arduino, evolving to newer releases. The Uno board is the first in a series of USB Arduino boards, the reference model for the Arduino platform.
The only difference on this board from the official Arduino Uno is that, this uses CH340 chip for the usb to serial converter. So, you need to install the driver first before you can program this board. You can find the download link of the driver below.
|Input Voltage (recommended)||7-12V|
|Input Voltage (limit)||6-20V|
|Digital I/O Pins||14 (of which 6 provide PWM output)|
|PWM Digital I/O Pins||6|
|Analog Input Pins||6|
|DC Current per I/O Pin||20 mA|
|DC Current for 3.3V Pin||50 mA|
|Flash Memory||32 KB (ATmega328P) of which 0.5 KB used by bootloader|
|SRAM||2 KB (ATmega328P)|
|EEPROM||1 KB (ATmega328P)|
|Clock Speed||16 MHz|
Before plugging this board to your PC, please install the driver first for CH340. Click this link for the detailed instruction on how to install the driver on different OS.