Usually used to add a reset button for shields that block the one on the board. Used with analogReference ().īring this line to LOW to reset the microcontroller. However, it is possible to change the upper end of their range using the AREF pin and the analogReference () function. By default, they measure ground to 5 volts. The Mega2560 has 16 analog inputs, each of which provides 10 bits of resolution (i.e. Note that these pins are not in the same location as the TWI pins on the Duemilanove or Diecimila. Support for TWI communication using the wire library. When the pin is HIGH the LED is on, when the pin is LOW it is off.Ģ0 (SDA) and 21 (SCL). there is a built-in LED connected to digital pin 13. The SPI pins are also broken out in the ICSP header, which is physically compatible with Uno, Duemilanove, and Diecimila.ġ3. These pins support SPI communication using the SPI library. Provide 8-bit PWM output with the analogWrite () function.ĥ0 (MISO), 51 (MOSI), 52 (SCK), 53 (SS). For more information refer to the function attachInterrupt ()Ģ to 13 and 44 to 46. These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value. Pins 0 and 1 are also connected to the corresponding pins of the ATmega16U2 serial USB-to-TTL chip.Ģ (interrupt 0), 3 (interrupt 1), 18 (interrupt 5), 19 (interrupt 4), 20 (interrupt 3), and 21 (interrupt 2). Used to receive (RX) and transmit (TX) TTL serial data. In addition, some pins have special functions: Each pin can provide or receive a maximum of 40 mA and has an internal pullup resistor (disconnected by default) of 20-50 kOhms. Inputs and outputs of the Arduino MegaĮach of the 54 digital pins on the Arduino 2560 Mega can be used as an input or output, using the pinMode (), digitalWrite () and digitalRead () functions. In the above Arduino LDR circuit diagram, 10k resistor R1 and LDR R2 form a voltage divider. Additionally, connect the 10k resistor between A0 and 5V. That is, connect the LDR between the A0 pin and GND. Connect an Arduino MEGA 2560 in the same way. Typically used to add a reset button to shields which block the one on the board.When you buy an Arduino Mega, the question of pinout will surely arise in the course of your electronics project. Notice that the circuit uses an Arduino Uno. Bring this line LOW to reset the microcontroller. There are a couple of other pins on the board:ĪREF. By default they measure from ground to 5 volts, though is it possible to change the upper end of their range using the AREF pin and analogReference() function. Note that these pins are not in the same location as the TWI pins on the Duemilanove or Diecimila.The Mega2560 has 16 analog inputs, each of which provide 10 bits of resolution (i.e. Support TWI communication using the Wire library. When the pin is HIGH value, the LED is on, when the pin is LOW, it’s off. There is a built-in LED connected to digital pin 13. The SPI pins are also broken out on the ICSP header, which is physically compatible with the Uno, Duemilanove and Diecimila. Arduino (Atmega) pins default to inputs, so they dont need to be explicitly declared as inputs with pinMode() when you. Provide 8-bit PWM output with the analogWrite() function.SPI: 50 (MISO), 51 (MOSI), 52 (SCK), 53 (SS). See the attachInterrupt() function for details. Pins 0 and 1 are also connected to the corresponding pins of the ATmega16U2 USB-to-TTL Serial chip.Įxternal Interrupts: 2 (interrupt 0), 3 (interrupt 1), 18 (interrupt 5), 19 (interrupt 4), 20 (interrupt 3), and 21 (interrupt 2). Each pin can provide or receive a maximum of 40 mA and has an internal pull-up resistor (disconnected by default) of 20-50 kOhms.In addition, some pins have specialized functions:Serial: 0 (RX) and 1 (TX) Serial 1: 19 (RX) and 18 (TX) Serial 2: 17 (RX) and 16 (TX) Serial 3: 15 (RX) and 14 (TX). Published:9 20:01:00 Author:lynne | Keyword: Arduino Mega 2560 Pinout | From:SeekICĮach of the 54 digital pins on the Arduino 2560 Mega can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead() functions.
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