![]() ![]() Note: The mapping of Arduino pins to Atmega328P pins provided in the table is specific to the Arduino Uno board, which utilizes the Atmega328P microcontroller. The ports (PD, PB, PC) refer to the different sets of pins available on the microcontroller, and the ADC, INT, RXD, TXD, SPI, and OC abbreviations are used to represent the different features and capabilities associated with those pins. In the context of the Arduino Uno, these abbreviations refer to specific registers or functionalities within the Atmega328P microcontroller, which is the main microcontroller chip used on the Arduino Uno board. SPI: Serial Peripheral Interface OC: Output Compare (used for PWM outputs) TXD: Transmitter Data (Serial communication output) RXD: Receiver Data (Serial communication input) To understand the correspondence between the Arduino Uno pins and the Atmega328P microcontroller pins, refer to the following table: Arduino PinÄigital I/O, Timer/Counter1 input capture Source: Mapping Arduino Pins to Atmega328P Pins: These pins can detect changes in voltage levels and trigger interrupts, allowing you to respond to external events promptly. The Arduino Uno has two pins, labeled 2 and 3, that can be used as external interrupt pins. SCL (Serial Clock): Provides the clock signal for synchronization in I2C communication. SDA (Serial Data): Carries the data signal for bi-directional communication between the Arduino and other devices. The Arduino Uno supports I2C (Inter-Integrated Circuit) communication through two pins: a. SS (Slave Select): Enables communication with specific SPI devices when multiple devices are connected. SCK (Serial Clock): Provides the clock signal for synchronizing data transfer. MISO (Master In Slave Out): Used for data transmission from other devices to the Arduino. MOSI (Master Out Slave In): Used for data transmission from the Arduino to other devices. The Arduino Uno features dedicated pins for Serial Peripheral Interface (SPI) communication. ![]() By connecting this pin to ground momentarily, you can reset the microcontroller and start your program execution from the beginning. The reset pin (RESET) is used to restart the Arduino Uno. These pins can be used to control the brightness of LEDs, drive motors at variable speeds, and generate audio tones. PWM allows you to control the intensity of digital signals by rapidly switching them on and off. The Arduino Uno has six pins (3, 5, 6, 9, 10, and 11) that support Pulse Width Modulation (PWM). They are connected to the ground of the power supply and must be connected to complete electrical circuits. GND: The ground (GND) pins serve as the common reference for electrical signals. These pins can be used to power external sensors or other low-power devices that require these voltages. 5V and 3.3V: The Arduino Uno provides a regulated 5-volt output (5V) and a 3.3-volt output (3.3V). The analog input pins use a 10-bit analog-to-digital converter (ADC), providing 1024 discrete levels of resolution. They are primarily used to interface with analog sensors such as temperature sensors, light sensors, and potentiometers. ![]() These pins can be used to measure analog voltages ranging from 0 to 5 volts. The Arduino Uno includes six analog input pins labeled A0 to A5. They support digital signals (HIGH or LOW) and can be used for reading switches, buttons, or sensors, as well as controlling LEDs, relays, and other digital devices. These pins can be configured as either inputs or outputs, allowing you to interface with various electronic components. The Arduino Uno features 14 digital input/output (I/O) pins labeled from 0 to 13. ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |