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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Set ADC input to high impedance

On a early version of the system I'm working on, an Arduino Mega was being used to read some analogue values using its ADC. Something critical to the application was for the ports to be always in high ...
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411 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 ...
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213 views

USART between Atmega16 and Beaglebone black

I'm working on a project which involves me to send data from AVR atmega16 microcontroller to a beaglebone black. I had written a code for the atmega USART but when connected, the beaglebone black ...
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810 views

Generating 8 analog signals from microcontroller [closed]

I want to generate 8 analog independent signals from a microcontroller, such as a BeagleBone or STM32. In my research, I found that I can use an external multi-channel DAC and interface it with the ...
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1k views

Sending AT Commands to Remote XBee using python-serial

I have connected coordinator xbee to serial port of beaglebone i.e . tx and rx of beaglebone. My router's D0 pin is connected to relay. I want to remotely disable or enable the D0 pin. For that i am ...
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171 views

Is it possible to use two communication protocols in one microcontroller?

So I've been trying to communicate between the Beaglebone Black and atmega through I2C for quite such time and have been facing quite a lot of problems with it. On the other hand I can successfully ...
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2answers
749 views

Audio Taper to Linear Potentiometer

I'm trying to linearize the output of an audio tapered potentiometer. Right now, I'm using ADC on a Beaglebone to read the value of a 250k potentiometer with 3.3V. I get a value between 0 and 1, but ...
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2answers
898 views

A protecting circuit using GPIO of the BeagleBone (Black or Green)

I'm really trying to develop a cape since I need to use 7-8 GPIO-Pins of my BBB Green and Black as Output. I'm too afraid to destroy the board somehow, so I was thinking to implement a solution which ...
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1k views

BeagleBone Black HDMI to VGA converter creating problem with the display

I recently bought a BBB and have started setting the initial environment before I start some actual developments. Since, my monitor has a VGA input, I bought a HDMI to VGA converter adapter to ...
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1k views

Beagle Bone Black interrupts for optical encoder

I'm trying to have my optical encoder work on interrupts. I found some resources online that discuss it but they all seem to be based on an older version of debian since the files and folders in "/sys/...
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590 views

Read a 6DOF IMU (Gyro + Accelerometer) using PRU - Beaglebone black

I plan to use an I2C interface in order to read the IMU (SparkFun 6 Degrees of Freedom IMU Digital Combo Board - ITG3200/ADXL345). Since the communication rate using I2C is 400kHz, I thought I should ...
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2k views

Safe way connect a 3.3V output to an input with weak pullup to 5V

I plan to connect a 5V IC to a beaglebone black(explicitly not 5V tolerant 3.3V IOs). For signals going to the beaglebone black I need a level shifter. But the input of the 5V IC has a weak pullup ...
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375 views

Flashing MCU using JTAG ICE 3 / Avrdude / Beagle Bone Black

I am in need of flashing ATmega1284P using Beagle Bone Black. I have JTAG ICE 3 connected via USB cable to Beagle Bone Black with Debian GNU/Linux 7 (wheezy). I have compiled version of Avrdude 6.1 ...
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619 views

Beagle Bone Black USB current draw damage [closed]

When I first got my BBB I immediately tested it on my TV via HDMI with my mouse and keyboard pair (both through the same receiver) in its USB host. Without thinking I powered the BBB through my ...
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744 views

Flashing BeagleBone Black image

I have a BeagleBone Black: ...
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1answer
1k views

How do we communicate between a pc and a beaglebone-black using wifi?

I have been working on a beaglebone-black based mini project which involves displaying a GUI on a screen and displaying sensor values. I have been using python to create the GUI and also interacting ...
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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 ...
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1answer
136 views

I2C between atmega and Beaglebone Black

I am working for a small project which involves me to communicate between an Atmega and Beaglebone black through I2C. My question is that Atmega has an 8 bit microprocessor and beaglebone black has a ...
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184 views

Beaglebone Black - Power sensors after boot

I am new to electronics and want to build a small thermometer/humidity sensor powered by a beaglebone black to get started on something practical. My issue is that the board doesn't start when the ...
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1answer
611 views

USB connection to BeagleBone Black drops

I figured out that BeagleBone Black acts weird when it doesn't have power supply from 5VDC supply jack, and it is only powered from USB connection's 5V. When it is powered like that it drops USB ...
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1answer
280 views

LCD Panels Refresh Rate

Why some newer LCD panels have 120Hz refresh rate, and not 60Hz? How we can determine what is the most optimal resolution to use to display content on our LCD, does it depends of our CPU power or GPU ...
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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: ...
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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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119 views

How to connect a 4D display to a beaglebone black?

I am fairly new to all this so sorry if this question is rather trivial. I have a 4D Picasso Display (28PTU-Pi) and I want to connect it to my Beaglebone board. So plugged the usb cable into the ...
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425 views

Streaming video from Beaglebone over Xbee module

I would like to stream a video feed from a camera connected to a Beaglebone Black wirelessly. However, we are talkig distances of over 4Km so I don't think a regular 2.4GHz connection would cut it. I ...
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310 views

How can I connect a BeagleBone Black using I2C to my TI host-controlled battery charger?

I have a battery charger that I want to program /control. http://www.ti.com/tool/BQ24261EVM-079?keyMatch=bq24261evm-079&tisearch=Search-EN-Everything How can I use a BeagleBone Black (BBB) to ...
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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 ...
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1answer
354 views

Dealing with unreliable BeagleBone pin levels during boot

I have a BeagleBone application that needs to interface with some 5V components. Unfortunately, some of the "5V components" that need to be interfaced are LEDs, so they draw appreciable current. As a ...
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149 views

Different ways of pin access

I'm currently reading introduction to PRU And I paid attention to this sentence: fast IO -- Many of the pins have special IO modes for direct access by the PRU. These work much faster than ...
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242 views

Errors on compiling the javacpp-present

I am trying to compiling the javacv in the beaglebone black. During compiling the javacpp-present. It shows the error ...
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1answer
586 views

Different ways of using UART

What is the difference when you send/receive data via Linux serial device file like ttyS3 and when you directly read/write from/to UART FIFO buffers? What situation is more safe and better? How ...
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1answer
1k views

How to flash boot partition on BBB?

I am trying to restore a bricked BBB device. Booting Debian from the SD card works fine (thanks to http://thethingsystem.com/dev/Bootstrapping-the-BeagleBone-Black-with-Debian.html ). Once the device ...
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3k views

Common Serial Port Issues

What are some of reasons that PC terminal receives garbage characters from one microcontroller? I am using BeagleBone and UART works okay, but after few transmitted command characters from PC ...
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1answer
576 views

Protect Beaglebone Black from Power Outage

I am using a BBB (Rev C) as a web server, powered by a 5V power supply connected to the 5V jack. I read in several locations that disconnecting the power supply to turn off the board can damage the ...
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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: ...
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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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244 views

Capacitive Touch and implementation with BeagleBone Black

How might I make a basic capacitive touch sensor for the Beaglebone Black that is capable of sitting behind an insulating material? I would like to make it as basic as possible, and without any sort ...
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5k views

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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235 views

BeagleBone Black reboots when connected with HDMI Display

I am working on BeagleBone Black board (Debian running on it) and it is working fine. Now I want it's Linux GUI on screen, to do so I have connected BeagleBone Black with HDMI cable. Now, when I ...
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1answer
1k views

multi device usb support for beaglebone black

I m using a beagle bone black in my project which controls a USB charger. My BBB is connected to another board which also powers the BBB through the header pins. The BBB's USB is expanded to connect ...
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141 views

Beaglebone black + serial enabled LCD

I'm trying to interface a SparkFun Serial Enabled 16x2 LCD (3.3V) to a Beaglebone Black. Since the beagleboard has on-board 3.3v and ground, I used that for the power to the LCD. For the 3.3v TTL ...
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1answer
312 views

Connecting BeagleBone Black to an Arduino

I am a software guy (everyone immediately downvotes...) trying do the following: (1) On a BeagleBone Black ("BBB") I am driving a GPIO pin high in software. (2) Then I am sending PCM (audio) out ...
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1answer
304 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
1k views

Analog Sensor of 0 to 10 v connection to BeagleBone Black

I have an analog sensor(Thermocouple) which provides an output voltage range of 0 to 10 volt. I want to connect it with a Beagle Bone Black. BBB accepts 0 to 1.8 volt as analog input. I thought of ...
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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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1answer
1k views

how to calibrate ADXL345 accelerometer?

I have ADXL345 digital accelerometer by Analog Devices. I use Beaglebone ADXL345 library that exist here: http://inspire.logicsupply.com/2014/08/beaglebone-3-axis-accelerometer.html So I can read the ...
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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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2answers
5k views

Increase SPI transaction speed?

I am using SPI to write and read the data from slave board. I have two questions regarding this process: Question 1. Why when I am trying to read 1.000.000 bytes through SPI using 1 message, it works ...
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1answer
181 views

using transistor to switch 3v from 2

i need to use a GPIO pin to test whether an LED is on/off. the LED only has 2v power which is not enough for my digital input (3.3v) so i would like to use a transistor to amplify the voltage from 2v ...
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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 ...