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2. List of Arduino boards and compatible systems - Wikipedia

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

   Improved: Host is able to reset the Arduino, pin headers for reset and 3.3 V, low dropout voltage regulator allows lower voltage on external power source Arduino Duemilanove (2009) [57] ATmega168, [39] ATmega328P (ATmega328 for newer version) 16 MHz Arduino 68.6 mm × 53.3 mm [ 2.7 in × 2.1 in ] USB FTDI: 5 V 16/32 0.5/1 1/2 14 6 6

3. Arduino Uno - Wikipedia

   en.wikipedia.org/wiki/Arduino_UNO

   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, or, if supplying voltage via the power jack, access it through this pin. 5V: This pin outputs a regulated 5V from the regulator on ...

4. List of computer hardware manufacturers - Wikipedia

   en.wikipedia.org/wiki/List_of_computer_hardware...

   Arm Ltd. (sells designs only) Amazon (AWS Graviton is ARM-based); Apple Inc. (ARM-based CPUs) Broadcom Inc. (ARM-based, e.g. for Raspberry Pi) Fujitsu (its ARM-based CPU used in top supercomputer, still also sells its SPARC-based servers)

5. Open-source hardware - Wikipedia

   en.wikipedia.org/wiki/Open-source_hardware

   By the mid 2000s open-source hardware again became a hub of activity due to the emergence of several major open-source hardware projects and companies, such as OpenCores, RepRap (3D printing), Arduino, Adafruit, SparkFun, and Open Source Ecology. In 2007, Perens reactivated the openhardware.org website, but it's currently (August 2023) inactive.

6. USB hub - Wikipedia

   en.wikipedia.org/wiki/USB_hub

   Power equals voltage times current. A USB port that draws 500 mA (0.5 A) at 5 volts is drawing 2.5 watts of power. In Bus-powered USB hubs, each USB port can supply power as well as transfer data. A self-powered hub takes its power from an external power supply unit and can therefore provide full power (up to 500 mA) to every port. Self-powered ...

7. Hard disk drive interface - Wikipedia

   en.wikipedia.org/wiki/Hard_disk_drive_interface

   Power cable not shown. The earliest hard disk drive (HDD) interfaces were bit serial data interfaces that connected an HDD to a controller with two cables, one for control and one for data. [a] An additional cable was used for power, initially frequently AC but later usually connected directly to a DC power supply unit. The controller provided ...