![]() ![]() Serial. Reads a single byte from a AT24C16C EEPROM on the TWI or I2C bus Read the first byte from an AT24C16C EEPROM connected to the Arduino MEGA 2560 TWI bus pins. Read Arduino MEGA 2560 pin 2 state with internal pull-up resistor enabled.ģ.3.4.2 Accessing TWI Devices in Software, Pin state is low or 0, switch is closed (pull-up resistor)ģ.3.1.2 Pins as Inputs, Internal Pull-up Resistors Pin state is high or 1, switch is open (pull-up resistor) I understand that I could use Serial2. However, in the program I want to redefine Serial to Serial2 so that the statement Serial.print will now print to the Bluetooth port. ![]() Serial.print prints to the USB port to the PC. One for USB to PC, one for Bluetooth and one for GPS. Read Arduino MEGA 2560 pin 2 state with pull-up resistor. I am using 3 of the Arduino Mega2560s Serial Ports. The HC-05 zs-040 modules have a voltage regular on then vcc in line. In the below example I using serial1 to talk to the HC-05. Pin state is low or 0, switch is open (pull-down resistor)ĭigitalWrite(LED_BUILTIN, LOW) // Switch L LED offģ.3.1.2 Pins as Inputs, Pull-up Resistor The Arduino Mega has 4 hardware serial channels so we do not need to use software serial, we can use one of the extra hardware serials to talk to the Bluetooth module. Pin state is high or 1, switch is closed (pull-down resistor)ĭigitalWrite(LED_BUILTIN, HIGH) // Switch L LED on Read Arduino MEGA 2560 pin 2 state with pull-down resistor. Serial.print(voltage) // Display voltageĢ.7.5.4 Analog In Pins Used as Digital I/O, Īrduino MEGA 2560 analog pin A0 used as a digital output pin.ģ.3.1.2 Pins as Inputs, Pull-down Resistor Int sensorValue = analogRead(A0) // Read ADC valueįloat voltage = (5.0 / 1024.0) * (float)sensorValue // Calculate voltage PinMode(MY_LED, OUTPUT) // Configure digital pin as an output pinĭigitalWrite(MY_LED, HIGH) // Set pin voltage to 5V on a MEGA 2560ĭigitalWrite(MY_LED, LOW) // Set pin voltage to 0V or GNDĪrduino MEGA 2560 PWM on pin 3 with 50% duty cycle.Ģ.7.5.3 Calculating Analog In Voltage, Ĭalculating analog input voltage on Arduino MEGA 2560 A0 pin. PinMode(12, OUTPUT) // Configure digital pin 12 as an output pinĭigitalWrite(12, HIGH) // Set pin 12 voltage to 5V on a MEGA 2560ĭigitalWrite(12, LOW) // Set pin 12 voltage to 0V or GNDĭefining a pin with a user friendly name. PinMode(LED_BUILTIN, OUTPUT) // Configure L LED pin as outputĭigitalWrite(LED_BUILTIN, HIGH) // Switch L LED ONĭigitalWrite(LED_BUILTIN, LOW) // Switch L LED OFFĭelay(200) // Leave L LED OFF for periodĪrduino MEGA 2560 pin 12 configured as an output and driven high and low. Sketches are displayed below under the section number that they occur in in the book, with the page number that they can be found on. You can use the Arduino environment’s built-in serial monitor to communicate with an Arduino board. Select the desired sketch and copy the code, then paste it to the Arduino IDE. Arduino Sketches from the Ultimate Arduino MEGA 2560 Hardware Manual can be found below. ![]()
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