Therefore, mark like 'use for analog ground' in not needed. 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. 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). A 10k resistor has a value of 10,000 ohms. Find the same information for Arduino MEGA 2560 boards in the Ultimate Arduino MEGA 2560 Hardware Manual. In general, this means that the UNO put several functions on one pin and these have moved to separate pins on the Mega. For more information on pull-up resistors, pull-down resistors, and other Arduino input pin configurations, see the Ultimate Arduino Uno Hardware Manual for Arduino Uno boards. ![]() 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. There will ideally be two RS232 signals being read into / written from the Arduino, each using male USB 3. ![]() It has 54 digital input/output pins (of which 15 can be used as PWM outputs). Inspired by Nick's UNO pinout I did a similar one for the Arduino Mega2560 R3.Īnnotations are color coded. For more information on how to get started with the Arduino Software visit the Getting Started page. I am trying to drive a stepper motor using an Arduino Mega 2560. The Arduino Mega 2560 is a microcontroller board based on the ATmega2560.
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