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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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31 views

STM3F405RG CAN bus issue

I encountered stange behavior of stm32f405rg while working with CAN. My setup: beaglbone black connected to stm over CAN bus. Data transmitted successfully, beaglbone is able to receive data correctly ...
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26 views

BeagleBone Black Pins Stuck on High

I have written a function in C++ that uses the kernel mmap function to toggle the value of GPIO pins. This works fine for many other pins, but I tried to use it on ...
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1answer
120 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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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 ...
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2answers
79 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 ...
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40 views

BeagleBone Black Driving NFETs w/GPIO

In short, I want to drive some NFETs directly from some of the BBB's GPIO. 3 of the NFETs will pass 1-3 Amps of D-S current and 1 NFET will pass <1 Amp from the D-S. As you may know the BBB's ...
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113 views

Any Issues Getting BeagleBone Black Wireless to run off of LiPo with Diode Fix?

This helpful question pointed me into the right direction for powering the BBB with a 3.7V LiPo battery. However, as this answer demonstrated, I won't be able to give the WiFi/BT module power in doing ...
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58 views

Building Starterware projects in CCSv8 using GCC

I'm new to BeagleBone and Code Composer Stadio; I want to build a Starterware Project in CCSv8; I installed Cygwin GCC and Linaro in my computer; I follow the instruction of below TI Wiki page and ...
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58 views

BBB Flashing Loop

So generally I have no problem flashing my BBB with the SD I have. I do it all the time, and it works on most board. However occionally it gets stuck in this "loop". It will flash the device ...
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1answer
139 views

Systems similar to TI's PRUs [closed]

I have been working with TI's PRUs on the am335x, equipped on the BeagleBone Black. I would like to know if other hardware manufactures offer similar systems. I am doing my Bachelor Thesis on this ...
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248 views

Beaglebone Black — Reading multiple HX711 / Load sensors

I have a BBB (Beaglebone black) connected to a few capes. I need to interface with 4 HX711 boards with loads sensors, I've yet to find anyone who has used any weight sensors with the BB; I've seen ...
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1answer
59 views

Accessing I2C address of ADT7516 ( Temp sensor )

I have a BeagleBone Green and an EVAL board of ADT7516. I connected them by SDA and SCL pins and as they are to be connected with the PC by the usb port, they will have a common ground. After this ...
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1answer
73 views

Method for Sending Multiple (16) Channels of Duty Cycle Modulated Signal over Medium-Long Distance

Problem What is the best method or industry standard solution for transmitting multiple channels (13 signal, 3 ground) of duty cycled modulated signals up to 25 feet. The data will be transmitted by ...
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1answer
86 views

Connecting Temperature sensor EVAL board (ADT7516) to the BeagleBone Green [closed]

I have a BeagleBone Green and an evaluation board of the temp sensor (ADT7516). I also have a 4-pin female jumper to grove 4 pin conversion cable. I am not an electronics student and have no idea ...
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3answers
266 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 ...
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1answer
67 views

Thermostats outputs to GPIO then to Furnace

I have a question on how to safely connect and detect Thermostats outputs to Controller's GPIO inputs (RasPi and BeagleBone). I've been looking up a lot and most of the cases it is showing me how to ...
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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)?
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89 views

Digital Potentiometer Not Working

I am trying to control an AD5206 digital potentiometer on a PocketBeagle (smaller Beaglebone Black essentially). I have an entry in my device tree for spidev, and I ...
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1answer
1k views

Design Review: 3.3V Logic to 12V Logic (Uni-directional and Bi-directional)

I'm looking for feedback and improvements on my design below. Specific questions are at the end. I created this as an attempt to answer my own, previous question. From my feedback there, it seems like ...
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1answer
82 views

DCF77 - No Signal detected

I'm using a Conrad DCF77 to get RTC on Beaglebone Black and wiring it so: 1--> GND | 2--> VCC 3,3 V | 3--> One of the gpios (P8_11) To read the Signal of the DCF Antenn I wrote the code: ...
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2k views

3.3V Logic to 12V Logic (Uni-directional and Bi-directional) [duplicate]

I'm looking to understand how to convert between 3.3V logic and 12V logic, in each direction individually and bidirectionally. I know this question has been asked before, but I'm overwhelmed with the ...
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337 views

Stepper Motor Calculations

I am currently struggling to determine some parameters of a stepper motor I am using. I am trying to calculate the number of pulses per second I can deliver to the motor reliably. This is relatively ...
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1answer
79 views

Is there another way to interface with BeagleBone Black hardware

As an example, to turn on one of the on-board LED's you need to update the text file "/sys/class/leds/beaglebone:green:usr0" In writing some tests just turning on ...
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1answer
369 views

Using Beaglebone Black to prototype commercial product

I am designing a system and it's safe to say I am a little out of my depth. The requirements of the project are as follows; drive 7" WVGA touch screen and generate graphics 4-20mA input 3 x 4-20mA ...
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472 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 ...
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1answer
333 views

Beaglebone: Unable to boot with custom cape

I made a custom cape (attached) for my beaglebone black and when I connect it, the beaglebone doesn't boot, only the power led turns on. I'm booting from an SD card and I have disabled the HDMI and ...
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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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1answer
202 views

Connecting 5V Joystick to Beagle Bone Black [closed]

I was recently trying to connect an simple analog joystick to test the ADC values being read by my Beagle Bone Black. Since range of analog input for BBB is 0 to 1.8 V I supplied 1.8 V to the 5 V ...
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1answer
458 views

How to interface matrix LED with beaglebone black

I'm a newbie to electronics and for my project I need to control a matrix LED with beaglebone black. I bought a LED click board (https://download.mikroe.com/documents/add-on-boards/click/4x4-rgb/4x4-...
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1answer
2k views

Use BBB analog inputs with 0..5V or 0..10V

I plan to use the BeagleBone Black analog inputs for sampling of analog data. But there are some major problems for this: BBB allows a maximum of 1.8 V analog input voltage while I have 5 V or 10 V ...
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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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1k views

Connecting USB-powered Beaglebone to car's CAN bus through OBD connector using common signal ground

I want to connect my Beaglebone Black, powered from USB port on my laptop, to OBD connector present in my Ford in order to see CAN traffic with can-utils. ...
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1answer
47 views

Buying Low Volume Populated PCBs and Handling Passive PNs

New to Eagle PCB design. I plan on making a custom Beaglebone Black Wireless PCB, and so have pulled down the Eagle files. I'm a student and have a student license. This project will be too difficult ...
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2answers
902 views

Flash/obtain ROM code for Sitara on BeagleBone Black

How is the ROM code loaded/provided on the BeagleBone Black? I see a few possibilities: It is loaded on in TI's factory and is immutable [unlikely] It is flashed on during manufacture of BeagleBone [...
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1answer
213 views

Can I provided 3.3V regulated directly to the BBB

I have a project where I need to be mobile and I draw a lot of power (4 BBB, 5 Port switch, 26 cameras). All of the cameras and the control circuits run at 3.3V - I'd love it if I could just deliver 3....
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2answers
668 views

Assembly language: Ampersand before a register

I'm trying to program the Programmable Realtime Units (PRU) on my Beaglebone Black in assembly language. Here is the instruction set, which comes in two flavors: ...
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3answers
326 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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316 views

Possible to use both CS1 and CS2 for SPI1 on Beaglebone?

I need to connect two SPI devices to Beaglebone. According to the documentation both SPI1_CS0 and SPI1_CS1 are available on the extension header: SPI1_D0, SPI1_D1 and SPI1_SCLK are available on P9[29]...
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1answer
425 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 ...
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417 views

No output for C++ GPIO code for beaglebone black

could anyone tell what could possibly be wrong in the following C++ code for enabling and setting pin no 49 (p9_23). I am directly checking the output on multimeter. ...
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3answers
670 views

How can I connect BeagleBone to 2 slaves with 1 “Chip Select” pin?

I have a BeagleBone white and I want to use it as a master which is connected to 2 slaves via an SPI connection, besides SCLK, DIN, and DOUT there is one pin of chip select "CS" "just one" and I need ...
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1answer
464 views

Beaglebone Black - Maximum current supplied by 1.8V analog rail (Pin P9_32)?

On the Beaglebone Black, what is the most current that the 1.8V analog rail (pin 32 on header P9) can supply? I can't find it in the System Reference Manual. I would've expected to find it in ...
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1answer
914 views

How to check currently which PWM device is active and in which pwmchip on BeagleBone Black?

I would like to control a servo motor using PWM. I have loaded the following .dtbo's in the slots in bone_capmgr directory as shown below: ...
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1answer
644 views

Beaglebone PRU PWM to Audio Signal

I was wondering if its possible to convert the high frequency PWM output from a Beaglebone Green's PRU into an analog audio signal. I was looking at building a low pass filter and I was wondering if ...
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1answer
1k views

BeagleBone Black won't power up from USB

I have been successfully using BBB powered from the USB adapter until now. I had to do some restart, and then the board won't power up (the PWR led blinks once ...
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2answers
486 views

Connecting the Beaglebone Black to the KK Mini flight controller

The flight controller needs to be sent 4 PWM signals at greater than or equal to 5 volts. Since the Beaglebone Black(BBB) GPIOs can supply only 3.3V I needed to change the signal from a 3.3 volt one ...
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1answer
170 views

Integrating Gefran Linear Potentiometer PY1 with Beaglebone Black

simulate this circuit – Schematic created using CircuitLab I want to connect one Gefran Linear Potentiometer with Beaglebone Black for displacement measurement purpose. The signal conditioner ...
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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 ...
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2answers
275 views

Is hobby relay adequate for air conditioner automation with microprocessor

I'd like to use a Beaglebone Black(3.3v Logic) plus a 3.3V to 5V logic level shifter(74HC125) to control an opto-isloated Songle Relay that has the following specs: Rated Resistive load: 10A 125VAC; ...
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1answer
825 views

Inconsistent GPIO values on Beaglebone Black running Debian

I'm trying to use GPIO on my Beaglebone Black, but I'm running into some behavior I don't understand. I have two pins (gpios 27 and 61) configured to input with ...