Description: The R3 is the best board to get started with electronics and coding. If this is your first experience with electronics and coding, is the most robust board you can start playing with. The R3 is the most used and documented board of the whole for Arduino family.The R3 is a microcontroller board based on the ATmega328P. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz quartz crystal, 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 a AC-to-DC adapter or battery to get started.Differences with other boardsThe R3 differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. Instead, it features the Atmega16U2 (Atmega8U2 up to version R2) programmed as a USB-to-serial converter. RevisionsRevision 3 of the board (compared to Revision 2 ) has the following new features: 1.0 pinout: added SDA and SCL pins that are near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board. In future, shields will be compatible with both the board that uses the AVR, which operates with 5V and with the Arduino Due that operates with 3.3V. The second one is a not connected pin, that is reserved for future purposes. Stronger RESET circuit. Atmega 16U2 replace the 8U2. Means a higher transfer rate and memory. Technical specs Model: R3 (Revision 3) Microcontroller: ATmega328P-PU (a socketed, breadboard friendly, removable chip) Atmega16U2 (NOT CH340) for USB/Serial Interface; No extra driver needed Operating Voltage: 5V Input Voltage (recommended): 7-12V Input Voltage (limits): 6-20V Digital I/O Pins: 14 (of which 6 provide PWM output) Analog Input Pins: 6 DC Current per I/O Pin: 40 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: 16MHz Length: 68.6 mm Width: 53.4 mm Weight: 25 g CommunicationIt has a number of facilities for communicating with a computer, another board, or other microcontrollers. The ATmega328P provides UART TTL (5V) serial communication, which is available on digital pins 0 (RX) and 1 (TX). An ATmega16U2 on the board channels this serial communication over USB and appears as a virtual com port to software on the computer. The 16U2 firmware uses the standard USB COM drivers, and no external driver is needed. However, on Windows, a .inf file is required. The Software (IDE) includes a serial monitor which allows simple textual data to be sent to and from the board. The RX and TX LEDs on the board will flash when data is being transmitted via the USB-to-serial chip and USB connection to the computer (but not for serial communication on pins 0 and 1). MemoryThe ATmega328P has 32 KB (with 0.5 KB occupied by the bootloader). It also has 2 KB of SRAM and 1 KB of EEPROM Pakcage included: 2 x R3 Development Board MEGA328P ATMEGA16U2 2 x USB cable On Jun 27, 2023 at 05:18:38 PDT, seller added the following information:
Price: 23.65 USD
Location: Bordentown, New Jersey
End Time: 2024-07-24T05:59:40.000Z
Shipping Cost: 0 USD
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Item Specifics
Restocking Fee: No
Return shipping will be paid by: Seller
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Brand: Unbranded
Type: UNO R3 Board
Compatible Product: with Arduino
UPC: Does not apply
EAN: Does not apply
