Beaglebone Black Power Jack Polarity

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Board Programming Instructions

  1. REF: BBONEBLKSRM BeagleBone Black System Reference Manual Rev 0.0.1 Page 6 of 79 1.0 Introduction This document is the System reference Manual for the BeagleBone Black. It covers the design for the BeagleBone Black. The board will be referred to in the remainder of this document as BeagleBone Black.
  2. What is the polarity of the DC power jack? Center positive. Refer to section 7.2 of the System Reference Manual for more information. Where can I create Schematics or a PCB layout for the BeagleBone Black? Follow this guide to get it all set up: BeagleBoard Black on Fritzing. How can I use a uSD in the uSD slot as extra storage on my BeagleBone.

These must be done before operating the testerMake sure the programmer is properly set up. See Programmer Setup

  • Connect power to TinyG board. *** BE SURE TO OBSERVE CORRECT POLARITY ***
  • +24v line (yellow) is next to corner of board and board mounting hole
  • Ground (black) is next to capacitor
  • Place jumper on left position of J12 - labeled +12v
  • Connect PDI programming header to J10. Red wire should be on the side with the white dot

Board Test Instructions

Jack

Both the Beaglebone Black and Raspberry Pi model B have similar power usage under load, but the Beaglebone Black is noticeably lower at idle. Even with its greater performance in the benchmark, the Beaglebone Black is slightly better at power usage than the Raspberry Pi model B. Make sure your power adapter provides 5V — not more or less than that! Also, you need to ensure that the power adapter has the correct polarity on the jack: The center provides 5V, whereas the outer ring is ground (GND). As soon as you apply power to your BeagleBone Black, it automatically boots.

Make sure the tester is properly set up. See Tester Setup

One Time Steps

  • Turn off the 24 volt power from the switch if not already off
  • Plug in the 5volt power supply for the BeagleBone Black.
  • This connects to the barrel connector on BeagleBone on the the left-side front of the tester.
  • Wait at least 30 seconds for the BBB to boot
  • Confirm that the short USB connector connects from the A connector on the BBB to the B connector on the tester board.

Steps For Each TinyG Board to Test

  • Turn off board power using switch on tester.
  • Blue power LED on tester (next to power input terminal) should fade off, indicating it is safe to remove any test board if there is one already on the tester.
  • Do not unplug or turn off BeagleBone 5v power wall unit.
  • Carefully align TinyG to test on threaded standoffs. Make sure all pogo pins make contact.
  • Loosely screw on the 4 threaded standoffs to hold the board down. Do not tighten (or you may have problems on removal).

Tester Setup

Checklist. Perform in order.

Beaglebone black pinout
  • Turn power switch off first
  • Unplug 5v wall power supply
  • Place Beaglebone Black on mounting headers with Ethernet jack in cutaway
  • Connect BBB USB host (A connector) to USB B connector on tester board (NOT on Tiny board)

Programmer Setup

Clone this wiki locally

Beaglebone Black Manual

The default graphical user interface (GUI) used for the BeagleBone Black is LXDE, which stands for lightweight X11 desktop environment. It’s part of the Debian Wheezy distribution, and it’s one of the best solutions for the BeagleBone Black because it’s optimized for processor and memory use. It’s a lightweight GUI.

The Original BeagleBone doesn’t support an HDMI output. If you purchase an LCD cape for your Original BeagleBone, however, the desktop environment is exactly the same as shown here, so you can easily follow along.

Most peripherals and cables are pretty standard. You may already have most of them, and those that you don’t have are easy to acquire. You may need the following list of components:

  • Micro HDMI cable

  • USB hub

  • Keyboard and mouse

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  • Ethernet cable

  • Power adapter

This figure shows where you connect each of the peripherals on the BeagleBone Black.

You need to have installed the latest image of the Debian operating system in your BeagleBone Black’s eMMC memory or on a microSD card that’s inserted into your BeagleBone.

Make sure that your BeagleBone Black is properly updated and upgraded. It’s a good idea to connect to it through Secure Shell (SSH) and run the following on the command line:

Connecting a Micro HDMI cable or DVI display

HDMI (High-Definition Multimedia Interface) displays have replaced DVI (Digital Visual Interface) displays. Although many DVI displays are still being used for many applications, the trend has been to shift to HDMI. The BeagleBone supports only Micro HDMI output, but if you have an adapter that can convert DVI to HDMI, you can repurpose an old DVI display. If you have an active HDMI converter, make sure that it has an external power source.

Use a Micro HDMI cable with an HDMI display. Some DVI displays won’t be compatible with your BeagleBone Black, and ultimately, a DVI display may not display anything in your screen. You could spend a lot of time trying to figure out the problem, only to realize that the screen you used isn’t compatible with your BeagleBone Black.

Connecting a USB hub, keyboard, and mouse

Because the BeagleBone Black offers only one USB host slot, you must use a USB hub to plug in more than a single USB peripheral. You can get an inexpensive hub like the one shown here at most electronics or computer stores. To use the BeagleBone Black as a desktop computer, you need to connect a USB keyboard and mouse to it.

Connecting to your router

Do you ever wonder whether it’s still possible to use a computer without an Internet connection? You can simply connect an Ethernet cable from your home router to the BeagleBone Black. After you’ve made that connection, you can easily install and update software or simply browse the web while using your BeagleBone Black as a desktop computer.

Connecting the power

Connecting both a mouse and a keyboard to the BeagleBone Black can be quite power-consuming, so the power provided by an USB cable may not be sufficient for everything to work smoothly. If you connect your BeagleBone Black via USB to your desktop or laptop computer and everything lights up, great! The BeagleBone Black is getting power.

Beaglebone Black Pinout

Some functions may be slow or won’t work properly, however. In the worst-case scenario, the peripherals may not even light up. To err on the side of caution, you should get a proper power adapter. That way, you can rest assured that your BeagleBone has all the energy necessary to run at its fullest speed and performance.

Make sure your power adapter provides 5V — not more or less than that! Also, you need to ensure that the power adapter has the correct polarity on the jack: The center provides 5V, whereas the outer ring is ground (GND).

Booting up

As soon as you apply power to your BeagleBone Black, it automatically boots. After a few seconds, you should see the typical, awesome-looking beagle with its tongue sticking out as the background of the desktop.

Beaglebone Black Wireless

If you don’t see anything on the display, try disconnecting everything and then redoing the connections described previously. Then reboot your board. Also, if you’re using a TV set as your display, make sure that you change its source to HDMI.

Beaglebone Black Specifications

If you can’t see the full image shown, or if it’s small in comparison with the screen, the problem has to do with your screen’s adjustment. Try going into your screen’s settings menu and adjusting the picture size until everything fits in a way that’s pleasant to you.

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