The latest IDE can be downloaded for free from Arduino’s official website. We used Arduino IDE to program the Arduino Uno. Eight series-connected 1-kilo-ohm resistors limit current flow through LEDs. When a pushbutton corresponding to a particular pattern is pressed in the GUI, it executes the corresponding callback function in the source program (Illumination001.m.) The callback function executes program statements corresponding to that pattern and sends High or Low control signals to appropriate pins of the Arduino in order to create the desired glowing pattern. In this project, digital I/O pins 3 through 10 of the Arduino are configured as output pins and used to control the illumination of eight LEDs. The microcontroller can operate at a clock frequency of 16MHz. The board provides serial communication via UART, SPI and I2C. The microcontroller has 32kB of ISP flash memory, 2kB RAM and 1kB EEPROM. Arduino Uno is an AVR ATmega328P microcontroller based development board with six analogue input pins and 14 digital input/output (I/O) pins.
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