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  2. Charlieplexing - Wikipedia

    en.wikipedia.org/wiki/Charlieplexing

    A symmetric layout of Charlieplexed LEDs. On left, 3 pins drive 6 LEDs arranged in a triangle. On right, 4 pins drive 12 LEDs arranged in a tetrahedron.. The Charlieplexing configuration may be viewed as a directed graph, where the drive pins are vertices and the LEDs are directed edges; there is an outward-pointing edge connected from each vertex to each other vertex, hence with n drive pins ...

  3. List of Arduino boards and compatible systems - Wikipedia

    en.wikipedia.org/wiki/List_of_Arduino_boards_and...

    Platino is an Arduino compatible board that supports 28-pin and 40-pin AVR devices. The board features multiple footprints for user interface elements like LCDs, pushbuttons, rotary encoders, LEDs and buzzer, supported by an extensive library. Bootloaders are available for all supported processors.

  4. Arduino - Wikipedia

    en.wikipedia.org/wiki/Arduino

    Power LED (red) and User LED (green) attached to pin 13 on an Arduino-compatible board. Most Arduino boards contain a light-emitting diode (LED) and a current-limiting resistor connected between pin 13 and ground, which is a convenient feature for many tests and program functions. [76] A typical program used by beginners, akin to Hello, World!, is

  5. Comparison of single-board microcontrollers - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_single-board...

    Platino is an Arduino compatible board that supports 28-pin and 40-pin AVR devices. The board features multiple footprints for user interface elements like LCDs, pushbuttons, rotary encoders, LEDs and buzzer, supported by an extensive library. Bootloaders are available for all supported processors.

  6. Arduino Uno - Wikipedia

    en.wikipedia.org/wiki/Arduino_UNO

    LED: There is a built-in LED driven by digital pin 13.When the pin is high value, the LED is on, when the pin is low, it is off. VIN: The input voltage to the Arduino/Genuino board when it is using an external power source (as opposed to 5 volts from the USB connection or other regulated power source).

  7. LED circuit - Wikipedia

    en.wikipedia.org/wiki/LED_circuit

    In 1969, Hewlett-Packard introduced the HP Model 5082-7000 Numeric Indicator, an early LED display and the first LED device to use integrated circuit technology. Its development was led by Howard C. Borden and Gerald P. Pighini at HP Associates and HP Labs , who had engaged in research and development (R&D) on practical LEDs between 1962 and ...

  8. LED to LED communication - Wikipedia

    en.wikipedia.org/wiki/LED_to_LED_Communication

    Since many electronic devices have a display or LEDs, light communication can be added to these devices. Devices like CRT monitors, tablets, watches, laptops, LED flashers, wristbands, and other gadgets with displays or LEDs can accommodate mobile light communication. Bg-fi is a mobile light JavaScript which can be adapted to devices running Java.

  9. Li-Fi - Wikipedia

    en.wikipedia.org/wiki/Li-Fi

    Li-Fi modules. Li-Fi is a derivative of optical wireless communications (OWC) technology, which uses light from light-emitting diodes (LEDs) as a medium to deliver network, mobile, high-speed communication in a similar manner to Wi-Fi. [4]

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