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  2. LED circuit - Wikipedia

    en.wikipedia.org/wiki/LED_circuit

    In CC drivers, the voltage changes while the current stays the same. CC drivers are used when the electrical load of the LED circuit is either unknown or fluctuates, for example, a lighting circuit where a variable number of LED lamp fixtures may be installed. As an LED heats up, its voltage drop decreases (band gap decrease [1]). This can ...

  3. 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 ]

  4. List of Arduino boards and compatible systems - Wikipedia

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

    BBFuino come with the ATmega328 controller, loaded with Optiboot (Arduino UNO's bootloader), compatible with Arduino IDE and sample code, design to fit breadboard for prototyping and learning, lower down the cost by taking out the USB to UART IC, so the board has the basic component to operate. BlockDuino [161] ATmega8 ATmega328 Blockduino

  5. Makey Makey - Wikipedia

    en.wikipedia.org/wiki/Makey_Makey

    The hardware design is very similar to the Arduino Leonardo, [12] with some added pull-up resistors and indication LED's. Because of the similarities you can easily turn a regular Arduino Leonardo into a Makey Makey compatible device. [13] You can also program the official Makey Makey using the Arduino IDE. [14]

  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). You can supply voltage through this pin ...

  7. Light-emitting diode - Wikipedia

    en.wikipedia.org/wiki/Light-emitting_diode

    A ring of LEDs around a video camera, aimed forward into a retroreflective background, allows chroma keying in video productions. LED for miners, to increase visibility inside mines Los Angeles Vincent Thomas Bridge illuminated with blue LEDs. LEDs are used in mining operations, as cap lamps to provide light for miners. Research has been done ...

  8. Seven-segment display - Wikipedia

    en.wikipedia.org/wiki/Seven-segment_display

    A typical 7-segment LED display component, with decimal point in a wide DIP-10 package. A seven-segment display is a form of electronic display device for displaying decimal numerals that is an alternative to the more complex dot matrix displays.

  9. SMD LED - Wikipedia

    en.wikipedia.org/wiki/SMD_LED

    Non-SMD types of LED lighting also exist, such as COB (chip on board) and MCOB (multi-COB). Surface-mounted device LED modules are described by the dimensions of the LED package. A single multicolor module may have three individual LEDs within that package, one each of red, green and blue, to allow many colors or shades of white to be selected ...