Arduino Uno Revision 3
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{"id":2291767233,"title":"Arduino Uno Revision 3","handle":"arduino-uno-revision-4","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003eArduino is an amazing tool for physical computing — it's an open source microcontroller board, plus a free software development environment. Use it to make cool interactive objects that can sense inputs from switches, sensors, and computers — and then control motors, lights, and other physical outputs in the real world. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe Uno is compatible with all current shields and code, and comes assembled — simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe Arduino Uno board is based on the ATmega328 (\u003ca href=\"http:\/\/www.atmel.com\/dyn\/resources\/prod_documents\/doc8161.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e). It has 14 digital input\/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, 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. The Uno 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.\u003c\/p\u003e","published_at":"2017-01-21T17:56:00-08:00","created_at":"2015-10-21T17:22:24-07:00","vendor":"Arduino","type":"Arduino Boards","tags":["Arduino","Arduino Uno","Arduino Uno Revision 3","BlackFridaySale","Getting Started with Arduino","Maker Camp","microcontroller","microcontrollers","MKARD01","OK Discount"],"price":2499,"price_min":2499,"price_max":2499,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":7536280449,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"MKARD01","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Arduino Uno Revision 3","public_title":null,"options":["Default Title"],"price":2499,"weight":227,"compare_at_price":null,"inventory_quantity":183,"inventory_management":"shopify","inventory_policy":"deny","barcode":""}],"images":["\/\/cdn.shopify.com\/s\/files\/1\/0243\/7593\/products\/MKSP11_arudino_uno_800x800_1024x1024_c3c5ad59-f01d-485e-b6a5-2fe2f68df5c6.jpg?v=1445474602","\/\/cdn.shopify.com\/s\/files\/1\/0243\/7593\/products\/MKSP11_arudino_uno__back_800x800_grande_ee84d5d4-43b1-42a3-acfa-94bd8625532e.jpg?v=1445474604"],"featured_image":"\/\/cdn.shopify.com\/s\/files\/1\/0243\/7593\/products\/MKSP11_arudino_uno_800x800_1024x1024_c3c5ad59-f01d-485e-b6a5-2fe2f68df5c6.jpg?v=1445474602","options":["Title"],"content":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003eArduino is an amazing tool for physical computing — it's an open source microcontroller board, plus a free software development environment. Use it to make cool interactive objects that can sense inputs from switches, sensors, and computers — and then control motors, lights, and other physical outputs in the real world. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe Uno is compatible with all current shields and code, and comes assembled — simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe Arduino Uno board is based on the ATmega328 (\u003ca href=\"http:\/\/www.atmel.com\/dyn\/resources\/prod_documents\/doc8161.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e). It has 14 digital input\/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, 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. The Uno 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.\u003c\/p\u003e"}
Arduino is an amazing tool for physical computing — it's an open source microcontroller board, plus a free software development environment. Use it to make cool interactive objects that can sense inputs from switches, sensors, and computers — and then control motors, lights, and other physical outputs in the real world.
The Uno is compatible with all current shields and code, and comes assembled — simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery.
The Arduino Uno board is based on the ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, 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. The Uno 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.
| Microcontroller | ATmega328 |
| Operating Voltage | 5V |
| Input Voltage (recommended) | 7-12V |
| Input Voltage (limits) | 6-20V |
| Digital I/O Pins | 14 (6 of which 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 (ATmega328) of which 0.5 KB used by bootloader |
| SRAM | 2 KB (ATmega328) |
| EEPROM | 1 KB (ATmega328) |
| Clock Speed | 16 MHz |
| Dimensions | 2.7" x 2.1" (the USB port. and power jack extend beyond the pcb) |
- Schematics
- EAGLE files
- The Power Pins are as fallows
- VIN. The input voltage to the Arduino board when it's using an external power source (as opposed to 5 volts from the USB connection or other regulated power source). You can supply voltage through this pin, or, if supplying voltage via the power jack, access it through this pin.
- 5V.This pin outputs a regulated 5V from the regulator on the board. The board can be supplied with power either from the DC power jack (7 - 12V), the USB connector (5V), or the VIN pin of the board (7-12V). Supplying voltage via the 5V or 3.3V pins bypasses the regulator, and can damage your board. We don't advise it.
- 3V3. A 3.3 volt supply generated by the on-board regulator. Maximum current draw is 50 mA.
- GND. Ground pins.
- IOREF. This pin on the Arduino board provides the voltage reference with which the microcontroller operates. A properly configured shield can read the IOREF pin voltage and select the appropriate power source or enable voltage translators on the outputs for working with the 5V or 3.3V.
- Serial: 0 (RX) and 1 (TX). Used to receive (RX) and transmit (TX) TTL serial data. These pins are connected to the corresponding pins of the ATmega8U2 USB-to-TTL Serial chip.
- External Interrupts: 2 and 3. These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value. See the attachInterrupt() function for details.
- PWM: 3, 5, 6, 9, 10, and 11. Provide 8-bit PWM output with the analogWrite() function.
- SPI: 10 (SS), 11 (MOSI), 12 (MISO), 13 (SCK). These pins support SPI communication using the SPI library.
- LED: 13. There is a built-in LED connected to digital pin 13. When the pin is HIGH value, the LED is on, when the pin is LOW, it's off.
- TWI: A4 or SDA pin and A5 or SCL pin. Support TWI communication using the Wire library. There are a couple of other pins on the board:
- AREF. Reference voltage for the analog inputs. Used with analogReference().
- Reset. Bring this line LOW to reset the microcontroller. Typically used to add a reset button to shields, which block the one on the board.
- On Rev1 boards: connecting the solder jumper on the back of the board (near the map of Italy) and then resetting the 8U2.
- On Rev2 or later boards: there is a resistor that pulling the 8U2/16U2 HWB line to ground, making it easier to put into DFU mode.
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