![]() ![]() 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. The Arduino Uno is a microcontroller board based on the ATmega328. It has 54 digital input/output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. Therefore, mark like 'use for analog ground' in not needed. Arduino Uno board is the best choice for the beginners. The Arduino Mega 2560 is an arduino microcontroller board based on the ATmega2560 (datasheet). Red are differences, where the functionality has moved on Mega2560 compared to UNO. Green have the same function and position as the Arduino UNO R3. Colors indicate comparison to the Mega2560 which has a similar shield connector pinout. Inspired by Nicks UNO pinout I did a similar one for the Arduino Mega2560 R3. Update: correct SCL to SCK, correct colors, call out second ICSP headerĪs per diagra of Arduino Mega 2560 Reference Design diagram:Īs per Arduino Mega 2560 Reference Design:īy continuity measurement, I have found that all connector pins labelled as 'GND' are shorted together this means that the AGND and DGND pins of ATmega2560 are shorted together at the connectors. This diagram is now superceeded by the excellent and highly detailed DUE pinouts diagram by Graynomad. I find it convenient to use the GND pins near to the analog input pins as analog grounds, and to use the GND on the end block for digital grounds, when linking to external circuitry. Blue is for differences due to added functionality (extra pins). Hi, I have been having issues getting my Arduino Mega 2560 to communicate to a 4 module MAX 7219 Dot Matrix and need some help troubleshooting. In general, this means that the UNO put several functions on one pin and these have moved to separate pins on the Mega. A mapping of Arduino Mega pin functionality onto Atmega 1280 pins - gist:2200185. If youve worked with the Arduino Uno, or other smaller Arduino boards, then youll love the Mega 2560. Red are differences, where the functionality has moved on Mega2560 compared to UNO. A mapping of Arduino Mega pin functionality onto Atmega 1280 pins - gist:2200185. SKU: A000067 Brand: Arduino Guides (1) The Arduino Mega 2560 is an update on the older Mega board and provides a 54 digital IO pins, perfect for larger projects. Inspired by Nick's UNO pinout I did a similar one for the Arduino Mega2560 R3.Īnnotations are color coded. ![]()
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