UNO SMD Board compatible with Arduino

The Uno SMD board is based on the ATmega328. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a 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 an AC-to-DC adapter or battery to get started.

The Uno SMD development board comes with a CH340G USB to UART converter chip. So in order to use this board, we need to install the CH340 driver. It can be powered via a USB connection or with an external power supply. The power source is selected automatically.

The AC-DC adapter can be connected by plugging a 2.1mm center-positive plug into the board's power jack. Leads from a battery can be inserted in the Gnd and Vin pin headers of the POWER connector. The board can operate on an external supply of 6 to 20 volts. If supplied with less than 7V, however, the 5V pin may supply less than five volts and the board may be unstable. If using more than 12V, the voltage regulator may overheat and damage the board. The recommended range is 7 to 12 volts.

If you want to use this UNO SMD Board compatible with Arduino in your small or DIY projects, for that you will need few essential components like

Comparison of Uno Boards:

Specification	UNO Wifi	UNO SMD	UNO R3
Microcontroller	ATmega4809	ATmega328P (SMD)	ATmega328P (Through hole)
USB connector	Micro-USB	USB-B	USB-B
Digital I/O Pins	14	14	14
Analog input pins	6	6	6
PWM pins	5	6	6
UART	Yes	Yes	Yes
I2C	Yes	Yes	Yes
SPI	Yes	Yes	Yes
I/O Voltage	5V	5V	5V
Input voltage (nominal)	7-12V	7-12V	7-12V
DC Current per I/O Pin	20mA	20 mA	20 mA
Power Supply Connector	Barrel Plug	Barrel Plug	Barrel Plug
clock speed	16 MHz	16 MHz	16 MHz
USB-Serial chip	ATmega16U2	CH340	ATmega16U2
SRAM	6.144KB	2KB	2KB
Flash Memory	48KB	32KB	32KB
EEPROM	256 Bytes	1KB	1KB
Dimensions	68.6 mm x 53.4 mm	68.6 mm x 53.4 mm	68.6 mm x 53.4 mm
RADIO MODULE	u-blox NINA-W102	-	-
Inertial Measurement Unit	LSM6DS3TR (3D accelerometer)	-	-
LED_BUILTIN	25	13	13
Wi-Fi Microprocessor	Yes	-	-

Applications:

Arduino Music Instrument
Robot Car
Fingerprint door lock
Home Automation
Security systems

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