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open-hardware-beaglebone-keys BeagleBone Black — это миниатюрный компьютер для электронных проектов, где одновременно нужна и высокая производительность, и широкие возможности для подключения периферии, так же связь с сетью и интернетом посредством операционной системы Linux. Размер платы — 87×55 мм, что позволяет сделать ваше устройство довольно компактным. BeagleBone Black построена на базе процессора Sitara XAMAZCZ семейства ARM Cortex A8, который работает на частоте 1 ГГц. Также на борту имеется МБ оперативной памяти DDR3L на шине с частотой МГц и 4 ГБ флеш-памяти eMMC, служащей «жёстким диском». Connect to BeagleBone Black Hardware Using Host Name. See Also. Documentation All.  This object represents a connection from the MATLAB® software to the BeagleBone® Black hardware. After you create the object, you can use the object to interact with the hardware and its peripheral devices by using this object with the functions listed in Object Functions. You can also use the object to interact with the devices attached to the hardware, such as a web camera, I2C buses, serial devices, and SPI channels. The BeagleBone is a single-board computer that comes with a mini-SD card containing an Ångström distribution of Linux. The Ångström distribution is tailored for use in small systems.  But most small systems don't need all of that hardware. Another option is to create a development system by linking the 'bone to a PC. You can use the PC's keyboard, display, and other resources to write and compile programs, transfer the programs to the 'bone, and debug. From a terminal application on the PC, you can send commands to execute on the 'bone.  Establishing Communications with the BeagleBone. To open a terminal application for communicating with the 'bone, right-click in the desktop terminal’s window and click Open Terminal. A new window will open.

Open hardware beaglebone keys Help Center Documentation. You can take advantage of these low-level interfaces to develop meaningful real-world applications. Most of the low-level interfaces of BeagleBone Black hardware are not plug-and-play.

To use these low-level interfaces, you must have a sound understanding of basic electrical concepts. This example is intended to familiarize you with low level interfaces of the BeagleBone Black hardware, establish sound practices for wiring and connections when working with external electrical components and use MATLAB command-line interface for BeagleBone Black hardware to control simple devices like LEDs and push buttons.

BeagleBone Black hardware have two expansion headers, P8 and P9. Each pin of the expansion headers can be configured and used for different functionalities. To see the open hardware beaglebone keys pin map of your BeagleBone Black hardware, use showPins method of beaglebone object.

To see all the possible pin map, use showAllPins method. The GPIO pins use 3. There is no over-voltage protection on the Open hardware beaglebone keys chip. You can open hardware beaglebone keys external components using 3. The maximum permitted current draw from the 3. Do not connect Open Hardware Beaglebone Python electrical components to BeagleBone Black expansion headers while BeagleBone Black hardware is running. If you want to connect an electrical component, turn off your board first.

Instructions for turning off you board are provided below. BeagleBone Black pins use 3. Do open Open Hardware Beaglebone Github hardware beaglebone keys connect devices using 5 volt logic levels directly to the BeagleBone Black pins. Use logic level converters when interfacing devices using 5 volt logic levels to BeagleBone Black hardware.

Do not short 5 volt power pins to any other pin on the expansion header. Be extremely careful when working in the vicinity of open hardware beaglebone keys volt power pins. Open hardware beaglebone keys not touch bare expansion header pins while BeagleBone Open Hardware Game Console Keys Black hardware is on. You can accidentally short some of the pins. BeagleBone Black runs a Linux operating system.

Turning off the power can result in operating system corruption. Open hardware beaglebone keys turn off your board, first shut down the Linux operating system by executing the following:. Then, unplug the power cable from the board.

To restart your board, plug the power cable back into the board. It takes approximately twenty seconds for the board to fully reboot. A light-emitting diode LED is a semiconductor light source. An LED has two legs. One is called anode and the other is called cathode. The anode leg is longer than the cathode leg, and must be attached to the positive voltage terminal while the cathode is attached to the negative voltage terminal.

The current going through an LED goes from anode to cathode. If you wire an LED backwards, it does not light up. LEDs come in different colors and sizes. Common sizes are 3mm, 5mm and 10mm and refer to the diameter of the LED. A red LED, when it is on will have a forward voltage anywhere from 1.

When a LED is on, it behaves like a diode and passes a large amount of current that may produce enough heat to cause the LED to burn out. Therefore, you should always use a current-limiting resistor when working with an LED. You need a red LED and a Ohm resistor. You connect the LED and the resistor as shown in the circuit diagram. Writing a zero to a digital pin results in an output of logic low, which is digital ground in this case.

A push button is a simple switch mechanism. When pressed or in closed position, the legs of a push button are shorted allowing electrical current to pass.

When in open position, open hardware beaglebone keys switch does not conduct electricity. You can use a digital input pin to sense if the push button is in an open or closed position. For this task, you need a breadboard-friendly pushbutton and 1 kOhm and 10 kOhm resistors. Connect open hardware beaglebone keys push button to GPIO pin 23, as shown in the previous circuit diagram. In this circuit, the GPIO pin sees ground when the push button is not pressed.

When the pushbutton is pressed, the GPIO pin sees 3. You can read the position of the push-button using open hardware beaglebone keys readDigitalPin method. This example introduced the workflow for working with GPIO pins. Choose a web site to get translated content where available and see local events and offers.

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Toggle Main Navigation. Search Support Support MathWorks. Search MathWorks. Open Mobile Search. Off-Canvas Navigation Menu Toggle. Documentation All Examples Functions. Resources Documentation All Examples Functions. Main Content. Open Script. Do not short a GPIO pin configured as digital output. You have a modified version of this example. Do you open hardware beaglebone keys to open this example with your edits? No, overwrite the modified version Yes. Select a Web Site Choose a web site to get translated content where available and see local events and offers.

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Sep 06,  · BeagleBone Black is a low-cost, community-supported development platform for developers and hobbyists. Boot Linux in under 10 seconds and get started on development in less than 5 minutes with just a single USB cable. Jul 10,  · Step E: Run the code by selecting the arrow to the right of "run" (or "debug") in the toolbar to pull down the list of files to run and select your new file. Step F: Observe the BeagleBone USR3 LED blinking steadily about 5 times a second. Step G: Stop the code by clicking "stop" in the toolbar. Open Script. This example shows you the basics of working with BeagleBone Black® Hardware.

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