Pins 0 and 1 are also connected to the corresponding pins of the USB-to-TTL Serial chip.
Used to receive (RX) and transmit (TX) TTL serial data. The Mega Sensor Shield HERE makes it easier. It's difficult to manage connections and cabling to so many Inputs and Outputs. See ARDUINO PIN CURRENT LIMITATIONS: Be nice to your Arduino! Analog pins and a subset of the digital pins do Pulse Width Modulation (PWM) using analogWrite().Įach pin operates at 0 to 5 volts, can provide or receive an absolute maximum of 40 mA (20mA recommended), and has an internal pull-up resistor (disconnected by default) of 20-50 kOhms. The analog pins will sample voltage levels and report a digital value using analogRead(). Maximum current draw is 50 mA.Įach of the 54 digital pins and 16 analog pins on the Mega can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead() functions. A 3.3 volt supply generated by the on-board regulator. Supplying voltage via the 5V or 3.3V pins bypasses the regulator, and can damage your 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). This pin outputs a regulated 5V from the regulator on the board. You can supply voltage through this pin, or, if supplying voltage via the power jack, access it through this pin. 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). 1.2 Arduino Mega 2560 Schematic Diagram (scrollable)Īrduino / YourDuino MEGA 12 Diagram and Pinouts: You can get the YourDuino Mega2560 HERE COMPARISION of different Arduino/Yourduino boards:Īrduino Mega 2560 Schematic Diagram (scrollable).
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