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  2. ESP32 - Wikipedia

    en.wikipedia.org/wiki/ESP32

    ESP32 is a series of low-cost, low-power system-on-chip microcontrollers with integrated Wi-Fi and dual-mode Bluetooth.The ESP32 series employs either a Tensilica Xtensa LX6 microprocessor in both dual-core and single-core variations, an Xtensa LX7 dual-core microprocessor, or a single-core RISC-V microprocessor and includes built-in antenna switches, RF balun, power amplifier, low-noise ...

  3. Jumper (computing) - Wikipedia

    en.wikipedia.org/wiki/Jumper_(computing)

    Jumper pins (points to be connected by the jumper) are arranged in groups called jumper blocks, each group having at least one pair of contact points.An appropriately sized conductive sleeve itself called a jumper, or more technically, a shunt jumper, is slipped over the pins to complete the circuit.

  4. General-purpose input/output - Wikipedia

    en.wikipedia.org/wiki/General-purpose_input/output

    GPIO interfaces vary widely. In some cases, they are simple—a group of pins that can switch as a group to either input or output. In others, each pin can be set up to accept or source different logic voltages, with configurable drive strengths and pull ups/downs. Input and output voltages are usually, but not always, limited to the supply ...

  5. List of video connectors - Wikipedia

    en.wikipedia.org/wiki/List_of_video_connectors

    1 Mini-DIN 4-pin, 1 Mini-DIN 7-pin, 1 Mini-VGA, 2 BNC, 2 RCA connectors, 8-pin DIN, [4] SCART 21-pin: S-VHS, some laptop computers, analog broadcast video, 1980-1990s home computers including the Commodore 64, C128 and Atari 8-bit computers: The 4-pin mini-DIN that is most common in consumer products today debuted in JVC's 1987 S-VHS. The 7-pin ...

  6. Spring pin - Wikipedia

    en.wikipedia.org/wiki/Spring_pin

    A spring pin (also called tension pin or roll pin) is a mechanical fastener that secures the position of two or more parts of a machine relative to each other. Spring pins have a body diameter which is larger than the diameter of the hole they are intended for, and a chamfer on either one or both ends to facilitate starting the pin into the hole.

  7. NodeMCU - Wikipedia

    en.wikipedia.org/wiki/NodeMCU

    NodeMCU was created shortly after the ESP8266 came out. On December 30, 2013, Espressif Systems [6] began production of the ESP8266. [12] NodeMCU started on 13 Oct 2014, when Hong committed the first file of nodemcu-firmware to GitHub. [13]

  8. Serial Peripheral Interface - Wikipedia

    en.wikipedia.org/wiki/Serial_Peripheral_Interface

    In a budget design with more than one eSPI sub, all of the Alert# pins of the subs are connected to one Alert# pin on the eSPI main in a wired-OR connection, which requires the main to poll all the subs to determine which ones need service when the Alert# signal is pulled low by one or more peripherals that need service. Only after all of the ...

  9. Pin header - Wikipedia

    en.wikipedia.org/wiki/Pin_header

    1×6 pin header (one row) 1×6 female header (one row) A pin header (or simply, header) is a form of electrical connector. A male pin header consists of one or more rows of metal pins molded into a plastic base, often 2.54 mm (0.1 in) apart, though available in many spacings. [1] Male pin headers are cost-effective due to their simplicity.