Arduino Due

Pinout

• 

  Arduino Mega and Due

• 

  Arduino Mega

• 

  Arduino Due

Changes for Arduino Due

1. Each Arduino Due I/O pin can provide a current of 3mA. Transistors are needed for LEDs, speaker etc.
2. The Arduino Due runs at 3.3V. Therefore, all signal lines also need to run at 3.3V:

Module 5V signal output-----10k---+---20k---GND
                                  | 
                                  |
                    Arduino Due 3.3V signal input

Following modules and pins use 5V signal output:

  Module                   Signal output
  Pre-amplifier LM386      OUT
  Motor driver MC33926     M1_FB, M2_FB
  Ultrasonic HC-SR04       Echo

Following modules already use 3.3V signal output (and use 3.3V compatible signal inputs):

  Module                   Signal output
  WIFI ESP8266             TX
  Bluetooth HC-05          TX
  GPS GY-NEO6MV2           TX
  IMU GY-80                SDA
  RTC DS1307               SDA
  Current sensor INA169    OUT