The Arduino UNO R3 has quickly become the most popular microcontroller amongst makers and enthusiasts due to its ease of use and its massive open-source community has enabled people of all skill sets to get started with microcontrollers.
The Arduino UNO R3 is the latest iteration to the Arduino UNO series while still maintaining the Arduino layout. It uses the ATMega328P in its DIP package operating at 16MHz, this lets you swap out the controller in case you have burnt the original one or just need to burn the bootloader onto a new controller. We also carry the Arduino UNO R3 SMD which has a surface mount variant of the ATMEGA328P instead.
The Arduino UNO R3 has a total of 20 GPIO pins that should be sufficient for most projects, in case it is not sufficient you can either go for one of the many Arduino compatible boards we carry or use port expanders to increase the number of IO pins available.
- 7-12VDC input voltage using the DC Jack, allowing for the Arduino UNO to be powered using a 9V Battery using a 9V to DC Jack battery snapper, we also carry the male DC jack to screw terminal connector for powering using an external power supply
- 16 Digital IO Pins of which 6 pins are capable of PWM output that can be used to control the brightness of your LEDs or even the speed of a motor.
- 6 Analog Pins for reading from all your analog sensors
- Built-in LED connected to pin13
- Microcontroller: ATmega328P
- Operating Voltage: 5V
- 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
- LED_BUILTIN: 13
- Length: 68.6 mm
- Width: 53.4 mm
- Weight: 25 g