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  2. RC-5 - Wikipedia

    en.wikipedia.org/wiki/RC-5

    Each bit of the RC-5 code word contains 32 carrier pulses, and an equal duration of silence, so the bit time is 64×27.778 μs = 1.778 ms, and the 14 symbols (bits) of a complete RC-5 code word take 24.889 ms to transmit. The code word is repeated every 113.778 ms (4096 ÷ 36 kHz) as long as a key remains pressed.

  3. List of Arduino boards and compatible systems - Wikipedia

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

    The Arduino Extreme uses many more surface mount components than previous USB Arduino boards and comes with female pin headers. [1] Arduino NG (Nuova Generazione) [1] ATmega8 [52] 16 MHz Arduino 81.3 mm × 53.3 mm [ 3.2 in × 2.1 in ] USB FTDI FT232RL Improved: FT232BM has been replaced by FT232RL to require fewer external components, LED on ...

  4. Comparison of single-board microcontrollers - Wikipedia

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

    The Arduino Extreme uses many more surface mount components than previous USB Arduino boards and comes with female pin headers. [45] Arduino NG (Nuova Generazione) [45] Arduino Yes ATmega8 [44] 16 MHz Arduino 3.2 in × 2.1 in [ 81.3 mm × 53.3 mm ] USB FTDI FT232RL Improved: FT232BM has been replaced by FT232RL to require fewer external ...

  5. Passive infrared sensor - Wikipedia

    en.wikipedia.org/wiki/Passive_infrared_sensor

    A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors. PIR sensors are commonly used in security alarms and automatic lighting applications.

  6. Open collector - Wikipedia

    en.wikipedia.org/wiki/Open_collector

    Open collector, open drain, open emitter, and open source refer to integrated circuit (IC) output pin configurations that process the IC's internal function through a transistor with an exposed terminal that is internally unconnected (i.e. "open").

  7. Infrared Data Association - Wikipedia

    en.wikipedia.org/wiki/Infrared_Data_Association

    To drive the LED, a computer-controlled pin is turned on and off at the right time. Cross-talk from the LED to the receiving PIN diode is extreme, so the protocol is half-duplex . To receive, an external interrupt bit is started by the start bit, then polled a half-bit time after following bits.

  8. Universal asynchronous receiver-transmitter - Wikipedia

    en.wikipedia.org/wiki/Universal_asynchronous...

    It is this difference that keeps the transmitter and receiver synchronized. BCLK = Base Clock. A UART frame consists of five elements: Idle (logic high (1)) Start bit (logic low (0)): the start bit signals to the receiver that a new character is coming. Data bits: the next five to nine bits, depending on the code set employed, represent the ...

  9. JTAG - Wikipedia

    en.wikipedia.org/wiki/JTAG

    JTAG (named after the Joint Test Action Group which codified it) is an industry standard for verifying designs of and testing printed circuit boards after manufacture.. JTAG implements standards for on-chip instrumentation in electronic design automation (EDA) as a complementary tool to digital simulation. [1]