Note that these pins are not in the same location as the TWI pins on the Duemilanove or Diecimila. 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. These pins support SPI communication using the SPI library. Provide 8-bit PWM output with the analogWrite() function. See the attachInterrupt() function for details. 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 USB-to-TTL Serial chip.Ġ), 3 (interrupt 1), 18 (interrupt 5), 19 (interrupt 4), 20 (interruptģ), and 21 (interrupt 2). I have ended up trying to use this Instructable adapted to a Mega 2560. I have followed a few guides, but havent gotten 100 working so far. I am trying to use a HC-05 module with a Mega 2560. Used to receive (RX) and transmit (TX) TTL serial data. Hi there First time post here, sorry if I am missing any main details. Maximum of 40 mA and has an internal pull-up resistor (disconnected byĭefault) of 20-50 kOhms. Voltage translators on the outputs for working with the 5V or 3.3V.Ĭlick to view the Atmega 2560 Pin Mapping.Įach of the 54 digital pins on the Mega can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead()įunctions. IOREF pin voltage and select the appropriate power source or enable A properly configured shield can read the Maximum current draw is 50 mA.Īrduino board provides the voltage reference with which the A 3.3 volt supply generated by the on-board regulator. Or 3.3V pins bypasses the regulator, and can damage your board. (5V), or the VIN pin of the board (7-12V). With power either from the DC power jack (7 - 12V), the USB connector Regulated 5V from the regulator on the board. Voltage via the power jack, access it through this pin. You can supply voltage through this pin, or, if supplying Opposed to 5 volts from the USB connection or other regulated power To the Arduino board when it's using an external power source (as 7805 As Fixed/Variable Voltage Regulator.Standard Resistors And Capicitors Value.Installing Additional Libraries For Arduino.Windows 7 installation of Arduino Board.
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