![]() ![]() These I/O pins account for 20 of the pins. It has 14 digital I/O pins, of which 6 can be used as PWM outputs and 6 analog input pins. The Atmega328 has 32K of flash program memory and 2K of Internal SRAM. We will build a board based on the Arduino UNO board first and then later reconfigure it for the MEGA 2560 CPU as well. For maximum flexibility you might consider building two boards. That said, the UNO setup is simpler to configure, if you mainly wish to use Arduino Shields you might just stick with that setup. Because of the large number of pin connections/jumpers that would be required you cannot go back from a MEGA to UNO setup. It is however possible to start with a 328/UNO configuration and later remove that chip and go to a 2568/MEGA configuration. Because the Atmega 2560 CPU is a surface mount chip, once it is installed on the board there is no way of going back to using the 328 CPU (without desoldering the 2560 chip from the board). The first thing you have to decide is which CPU you would like the board to be setup and configured for. Please note: this board can be driven by either the Atmega 328 or Atmega 2560 CPU chip but not both CPU's at the same time. In order to use and understand this S100 bus Atmega 328/2560 CPU board you should be fairly familiar with the Arduino hardware and software.Įxcellent vendors with much information about Arduino boards are " SparkFun.COM" and " Adfruit.COM" and of course Arduino itself. Here for a pinout diagram of the Arduino MEGA board. See here for a pinout diagram for the UNO pinout and The MEGA is somewhat similar but has more I/O pins. Two very popular boards are the Arduino "UNO" board and "MEGA".īy far the most popular "Shields" pinout is that found on the UNO. Arduino also provides a nice integrated development environment (IDE) for writing simple "sketch" code. The microcontrollers are typically programmed using a serial communications interfaces, including (USB) on some models. They are usually equipped with sets of digital and analog input/output (I/O) pins that may be interfaced to various expansion boards (shields) and other circuits. ![]() Arduino board designs use a variety of microprocessors. Arduino boards are available commercially in preassembled form, or as do-it-yourself kits. The project's products are distributed as open-source hardware and software. Arduino is an open source computer hardware and software (Italian) company that designs and manufactures CPU board kits for the control While (Wire.A whole world of new hobbyists have in the past decade grown up around the "Arduino" boards. Serial.begin(9600) // For displaying results in Serial Monitor window 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) Read Arduino MEGA 2560 pin 2 state with pull-up resistor. 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 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. This page has been left to support those readers who bought the older book, which is no longer available. The Arduino MEGA 2560 Hardware Manual has been replaced by the newer full color revised and updated Ultimate Arduino MEGA 2560 Hardware Manual. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |