Arduino Uno R3 SMD Board Kit With USB Cable
Arduino Uno R3 overview
This improved Arduino Uno R3 is one of the latest versions of Arduino Uno with an onboard CH340 USB - serial converter chip. Arduino Uno R3 provides you with a cheaper opportunity to get started with Arduino boards. The microcontroller model of this board is the same as the original one (Atmega328). The only difference between microcontrollers is the package. The original one has a DIP package but the clone one has an SMD package microcontroller. The Arduino Uno R3 kit is more powerful as compared to the dip version.
Key specifications
Microcontroller
ATmega328P
Input voltage
7-15V
Digital I/O Pins
14 (6 PWM outputs)
Flash Memory
32K
Clock Speed
16MHz
Analog Inputs
6
Datasheet
a000066-datasheet-1.pdf
Format PDFSize 431 KBLanguage EN
Third-party / unverified source
Arduino Uno R3 features
- Main Changes from the older version
- Add two rows of holes for the pins. So it can be connected with a regular Dubond line.
- Add 3 rows of holes for wiring.
- Change the in-line package of ATMEGA328P to a flat box.
- CH340G Replace ATmega16U2
- Plug the UNO development board, the driver will be automatically installed.
- select the board UNO inside the die.
- Select the COM port, this can be in my computer queries, just inside your UNO port development board
- You'd better choose Arduino's own routine procedures, and burn them into the board
Arduino Uno R3 pinout
| Name | Description |
|---|---|
| Power | Vin: Input voltage to Arduino when using an external power source.5V: Regulated power supply used to power microcontroller and other components on the board.3.3V: 3.3V supply generated by the onboard voltage regulator. The maximum current draw is 50mA.GND: ground pins. |
| Reset | Resets the microcontroller. |
| Analog Pins | Used to provide analog input in the range of 0-5V |
| Input/Output Pins | Can be used as input or output pins. |
| Serial | Used to receive and transmit TTL serial data. |
| External Interrupts | To trigger an interrupt. |
| PWM | Provides 8-bit PWM output. |
| SPI | Used for SPI communication. |
| Inbuilt LED | To turn on the inbuilt LED. |
| TWI | Used for TWI communication. |
| AREF | To provide a reference voltage for input voltage. |
More about Arduino Uno R3
Pinout of Arduino Uno R3
| Pin Category | Pin Name | Pin Description |
|---|---|---|
| Power | Vin, 3.3V, 5V, GND | Vin: Input voltage to Arduino when using an external power source.5V: Regulated power supply used to power microcontroller and other components on the board.3.3V: 3.3V supply generated by the onboard voltage regulator. The maximum current draw is 50mA.GND: ground pins. |
| Analog Pins | A0 – A5 | Used to provide analog input in the range of 0-5V |
| Input/Output Pins | Digital Pins 0 - 13 | Can be used as input or output pins. |
| Serial | 0(Rx), 1(Tx) | Used to receive and transmit TTL serial data. |
| External Interrupts | 2, 3 | To trigger an interrupt. |
| PWM | 3, 5, 6, 9, 11 | Provides 8-bit PWM output. |
| SPI | 10 (SS), 11 (MOSI), 12 (MISO) and 13 (SCK) | Used for SPI communication. |
| TWI | A4 (SDA), A5 (SCA) | Used for TWI communication. |
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