Questions tagged [beaglebone-black]

The 'black' is a version of the Beagle board, a single-board computer powered by an ARM CPU running Linux.

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How much power can be supplied over Beaglebone Black's USB?

I'm using Beaglebone Black. How much power can I provide over USB to an external device? I have read the specifications, and the information I found was 2 amps to the board should be good enough to ...
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5answers
7k views

Safety of using microcontrollers such as Arduino

I have been learning how to work with Arduino Uno R3, and it seems very intuitive and exciting for me. As many agree, I see lots of benefits of learning to use it at a young age. I would like to ...
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1answer
4k views

Beaglebone GPU usage

The beaglebone uses TI AM335X SOC which has a SGX530 3D Graphics Engine. I wish to know if there is a single open source operating system available in the world wide web capable of using the ...
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Baudrate of DS18B20

I'm trying to connect a DS18B20 to my Beaglebone Black. Now I wan't to determine the Baudrate but can't find it in the Datasheet of the DS18B20. In the internet I saw different ones (9600, 19200). ...
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3answers
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What is the most efficient way to power a solar computer (5V) from a 12V lead acid battery?

My project: Power a Beaglebone Black (BBB) entirely from solar energy. Obviously energy efficiency is crucial here. My setup so far: PV panel connected to a deep-cycle lead acid battery. Now I need to ...
5
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3answers
5k views

Protection of BeagleBone Black from eMMC corruption on power loss

I'm considering an application where a BeagleBone Black, preferably running one of the recommended Debian images loaded in eMMC, is powered by a 5V source that can be removed at any moment. I want to ...
5
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1answer
546 views

Advice regarding Remotely Operated Vehicle (ROV) control scheme?

Please let me know if this question isn't specific enough, I'll be happy to clarify. I am looking at various options for a control scheme for my underwater robot. I am in school and it is my job to ...
4
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2answers
77 views

Purpose for Shunt Resistor on Opto Isolator Input?

I was looking at a BeagleBone Black Cape and became curious on an input circuit to the BeagleBone GPIO (used for a NPN proximity sensor). Upon further reverse designing, I notice a // 220Ω shunt ...
4
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1answer
471 views

Beaglebone Black Power Switch Detection

I've looked around and found a bit of information regarding attaching a 3.7V lithium battery to the BBB (Beaglebone Black) but I haven't found an exact answer to what I am looking for. I understand ...
4
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2answers
878 views

BeagleBone Black LED current/brightness

I'm in the process of designing a PCB that includes 10-15 LEDs. It's battery-powered, so I'd like to use as little power as possible. As such, I've been trying to figure out how little current the ...
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2answers
2k views

How to disconnect voltage from BeagleBone Black expansion pins?

I'm trying to create a cape that will safely power my BeagleBone Black from my car's electrical system. The design I am using is based on the one from this answer. The circuit there suggests a simple ...
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3answers
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Connecting BeagleBone Black using serial port - voltage

I want to connect PC to BeagleBone Black using serial port. There is a note on the BeagleBone website that I need a 3.3 serial adapter. I do have a converter USB-rs232 using FT232RL, that gives me at ...
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4answers
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Is BeagleBone Black a microcontroller or computer?

I started working on BeagleBone Black, and I cannot find out whether BeagleBone is a microcontroller, or some kind of computer? If computer, what makes it a computer? I worked on different Cortex-M ...
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3answers
12k views

3.3V <-> 24V interface

I need to interface an ARM µC (BeagleBone Black) with a 24VDC system. 24VDC sensors and 24VDC actuators should be connected to the BeagleBone Black. I am wondered how to do this. I have found a ...
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3answers
265 views

Yet Another question on using GPIO to short a remote push button

OK, I bought this little remote-controlled Ac outlet thing for $1. It controls 3 outlets via RF. I didn't realize it was RF at first, but I currently have my BeagleBone Black doing a bunch of home ...
3
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2answers
16k views

BeagleBone Black CAN bus setup

I am trying to connect to a CAN bus network with my BeagleBone Black and SN65HVD230. I've connected it like in the picture. I am running: ...
3
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2answers
1k views

BeagleBone Black reboots periodically

My BeagleBone Black reboots periodically after some random time (> 5hours)? I am totally stucked with ideas, I have my app working for that some random time and system gets reset. BBB works on Debian ...
3
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2answers
6k views

BeagleBone Black - power supply sensitivity

I've bought a AC/DC adapter which per its specifications should output 5VDC and deliver 3A. I was going to use this adapter to power my BeagleBone Black (BBB) with. However, when I'm measuring the ...
3
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1answer
2k views

Why is i2cset giving “resource busy” on my BeagleBone Black?

After trying to get Adafruit's 8x8 LED Matrix python example code to work on both my Raspberry Pi and my BeagleBone Black, I realized there is probably something wrong with Adafruit's code and not me. ...
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2answers
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Random flashing on WS2812B LEDs

I'm trying to drive a strip of WS2812B LEDs with a Beaglebone Black(revC). Because the LEDs expect a data signal at 5V and the BBB outputs at 3.3V, some sort of level shifting is required. However, ...
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1answer
2k views

EEPROM in beaglebone black

I want to disable EEPROM in beaglebone black by unloading i2c-omap driver. Will it create problem in hardware or any other software support? What should I expect ?
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2answers
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How can I make the Raspberry Pi and BeagleBone Black talk via serial?

The BeagleBone Black is great. You plug in the USB cable to your computer and a DHCP connection is established, allowing you to ssh to the BeagleBone in seconds. Unfortunately the Raspberry Pi takes ...
3
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1answer
437 views

Beaglebone black usb host current

I'm using a Beaglebone black + BBVIEW 4.3 LCD Display + Datalogic Magellan 110i usb scanner. The scanner is connected to the usb host port but when I read a bar code the scanner goes down and then up ...
3
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1answer
1k views

How to setup a RS-232 Cape for BeagleBone Black

I'm trying to use a RS-232 cape in a python script. A TU-S9 USB-to-Serial converter works just fine with same code I just change the port. So I don't think it is my code. The only thing I can think of ...
3
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1answer
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MFRC522 on Beaglebone Black

I am trying to get my RC522 to work on the BBB. It works great on my Arduino which is well documented e.g. here or here. My only requirement is to read the serial # of cards which are Mifare S50. I ...
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2answers
672 views

BeagleBone Black display

I am trying to get the Nokia 5110 screen up and running on BeagleBone Black rev b. I am using... Ken Keller's BeagleBone Nokia 5110 LCD Bonescript library An Adafruit recycled Nokia 5110/3310 ...
3
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1answer
668 views

Beaglebone Black ROV Control Scheme

I am looking for some advice regarding my control setup for an ROV and how to make it as smooth as possible. Currently, I have two arcade style joysticks with standard micro switches inside. How I ...
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3answers
3k views

3.3v to 5v logic? [closed]

I have been looking over various data sheets for hours and still am not sure how to select an apporiate device. I am looking to send 5V 10mA pulses at 100-300kHz (to be determined) to a motor driver ...
3
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0answers
385 views

Linux enc28j60 driver always times out on transmit

I've wired up an ENC28J60 module with an SPI interface to a Beaglebone Black development board running Linux 3.8, but I cannot get the device to TX (or RX) anything. Every attempt to TX times out and ...
2
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3answers
325 views

Powermanagement of a minicomputer in an automotive vehicle by engine start/stop and voltage threshold detection

Revison 1.3 (New circuit, more background information added, PCB made and tested, it WORKS) Background: I would like to use a BeagleBone Black (=Minicomputer) for data acquisition in an automotive ...
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1answer
128 views

How do you do a software reset of the am355x (like on the BeagleBone Black)?

Is there an easier way to do this than setting up a watchdog and waiting? Using only software (no tying a GPIO to the reset pin)?
2
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1answer
311 views

BeagleBone Black User Leds

Is it possible to set some of four available user leds to show serial port activity, like we can set it to show mmc activity?
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1answer
7k views

What are all of the pins of the Beaglebone Black Rev. C serial (debug) header?

The Beaglebone Black Rev. C has a serial debug header with 6 pins. I would like to know what each of these pins is. If numbered 1-6 starting closer to the 5v barrel connector, pin 1 is ground, pin 4 ...
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2answers
4k views

Temperature measurement using LM35

I'm doing a project on beaglebone black and I'm interfacing a LM35 temperature sensor (datasheet) to one of the ADC pins of the beaglebone. As per the Beaglebone datasheets the reference voltage of ...
2
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1answer
119 views

What is this communication standard I'm seeing? It looks like UART but with a third line

What the title says. I looked into flow control, as that seems like the obvious answer to "what are these extra lines in my UART communication?" But what I'm seeing doesn't really look like flow ...
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2answers
2k views

BeagleBone Black CAN Bus

My apologies if this is the wrong stack website for this question. We plan to use a BeagleBone Black as the control computer for an electric car. The BBB handles, among other things, communicating ...
2
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1answer
3k views

BeagleBone Serial Communication

I have a problem seeing characters written in /dev/ttyS8 on my PC terminal with this C code: ...
2
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1answer
865 views

Are all connections to my ENC28J60 required?

I'm trying to connect a ENC28J60 module that exposes a SPI interface to my Beaglebone Black. I only have pins 1 (NET_CS), 2 (SCK), 3 (MOSI, i.e., D0), 4 (MISO, i.e., D1), 5 (GND), 10 (VCC) connected ...
2
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1answer
2k views

Arduino <-> BBB UART issues using bi-directional level converter (5v to 3.3v)

I am having a strange issue interfacing between an Arduino and BeagleBoneBlack over UART. The Arduino is 5v logic, and the BBB is 3.3v logic, so I'm using a bi-directional logic level converter from ...
2
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1answer
424 views

Beaglebone Black - DC Motor causes ADC to hang?

I'm working on a regenerative-braking project with a DC motor. My Beaglebone Black drives a small DC Motor using a TB6612FNG motor driver from Sparkfun (datasheet): Everything runs fine except that ...
2
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1answer
221 views

Beaglebone pin muxing modes

Can I use pins muxed to different modes on the same header using a device tree overlay? E.g., could I take my Beaglebone Black's P9 header and mux pins 28-31 to mode 3 for SPI, and pins 11-16 to mode ...
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2answers
347 views

Beaglebone Black LCD/TFT/display and I2C2

I am considering buying a 4D Systems I2C LCD for the BBB, e.g. a 7" touchscreen, which uses the I2C2 bus. The question is, will I be able to use other peripherals on I2C2, on a home made cape, ...
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2answers
1k views

Can a 485 network work if the DE (driver enable) pin of the transceiver is always on?

We are using a Beaglebone Black with the Osso Cape (https://github.com/nexlab/Osso) for comunicating with other equipment using a 485 connection and Modbus RTU. The driver enable (DE) pin of the cape'...
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2answers
1k views

stm32 programming stm32 or beaglebone

I would like to program stm32f4 or possibly others from beaglebone (black) board. Is it possible to load firmware over serial (uart) or somehow to the stm32? Is it possible to use two stm32 , one for ...
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1answer
2k views

Can I update the Beaglebone Black without a micro SD adapter?

I lost my micro SD card adapter, and the stores around here don't sell them (except in a package with a micro SD card). Hence, my question: Can I update the Beaglebone Black (i.e., program the on-...
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1answer
413 views

Design for Multiple I2C slave devices

I'm doing a PCB in which I'm using the Beagle Bone Black to interact with multiple I2C devices. I have attached a schematic. Out of the many I2C devices, I'm connecting some using TI's I2C switch ...
1
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1answer
305 views

Use of linear optocoupler to provide safety for analog input of BeagleBone Black

I need to connect a thermocouple (output 0 to 10 V) to a BeagleBone Black. I have planned for a voltage divider circuit to do that as BeagleBone accepts only 1.8 V as its analog input. Do I need to ...
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2answers
813 views

Amplifying Small Signal With Solid State Relay

I am trying to control an electromagnet with a signal from a small microcontroller (a BeagleBone Black). Obviously, I need to amplify the signal. I have a lead from a power source that I want to pass ...
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3answers
2k views

How to connect a sensor via I2C on an OSX computer?

I am growing a sort of interest for hardware projects; and lately I started to experiment with BeagleBone and various types of sensor. Now I realize that, to reduce the size of your hardware (and ...
1
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1answer
49 views

Why can't the bootloader save and log messages for us to view later [closed]

I have a problem whereby a remote BeagleBone device is taking hours to boot up. When it does, I don't see any problems in the kernel boot logs such as journalctl -b or journalctl -b -1 Without having ...