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2. 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 ...

3. List of Arduino boards and compatible systems - Wikipedia

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

   More efficient switching power supply with 7-23 V input; Mini-USB connector; Can source 2 A at 5 V and 800 mA at 3.3 V; SainSmart UNO R3 [79] ATmega328-AU SainSmart [75] Development board compatible with Arduino UNO R3 Controller: SMD MEGA328P-AU; A6/A7 port added; 3.3 V/5 V supply voltage and I/O voltage switch. AVR-Duino [80] TavIR [81]

4. List of open-source hardware projects - Wikipedia

   en.wikipedia.org/wiki/List_of_open-source...

   Banana Pi, uses low-power processors with an ARM core; runs Linux, Android, and OpenWRT; BeagleBoard, uses low-power Texas Instruments processors with an ARM Cortex-A8 core; runs Ångström distribution (Linux) IGEPv2, an ARM OMAP 3-based board designed and manufactured by ISEE in Spain. Its expansion boards are also open-source.

5. 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 ...

6. Arduino - Wikipedia

   en.wikipedia.org/wiki/Arduino

   Arduino (/ ɑː r ˈ d w iː n oʊ /) is an Italian open-source hardware and software company, project, and user community that designs and manufactures single-board microcontrollers and microcontroller kits for building digital devices.

7. USB - Wikipedia

   en.wikipedia.org/wiki/USB

   Even though USB 3.0's 4.5 W is sometimes insufficient to power external hard drives, technology is advancing, and external drives gradually need less power, diminishing the eSATA advantage. eSATAp (power over eSATA, a.k.a. ESATA/USB) is a connector introduced in 2009 that supplies power to attached devices using a new, backward compatible ...