Questions tagged [hardware]

Questions relating to the physical components that the Raspberry Pi consists of.

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4 votes
1 answer
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Why is my RPi freezing of its own accord?

I own a RPi 3 Model B, which does a very good job of freezing of its own accord, even when not much activity is being done. I mean, I can still move the mouse, but it stays in its last frame and I ...
4 votes
1 answer
5k views

Using Android phone as microphone for R PI B+

I'm planning to use Jasper for voice control on my Raspberry Pi B+. However, there are no microphone sockets and I do not have a USB mic. I would like to know if there is any way I could use my ...
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4 votes
1 answer
260 views

RaspberryPi A+ USB Data Lines shorted

This is kinda weird problem. I used Raspberry Pi A+ for my small projects. I did all the programming using a USB WiFi dongle via SSH. It all went happy and fine until one fine day the dongle stopped ...
3 votes
3 answers
101 views

Raspbery Pi 3B+ - My USB ports don't work, but ethernet does

This is a pretty short question. My ethernet port works, but none of the usb ports seem to do anything when I plug anything in them. This is the case with a fresh raspi os image. How can I debug this?
3 votes
1 answer
560 views

RFM69HCW with Raspberry as gateway for wsn

Good day, I am making a wireless sensor network prototype using communication technology, the RFM69HCW module [3]. I use an Arduino nano for the processing unit for the sensor nodes, and for ...
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3 votes
0 answers
548 views

Controlling a laser rangefinder via the raspberry pi

First, a disclaimer that I am an electronics newbie. I got my hands on a laser rangefinder which looks very similar to this: On the top left corner, there are two sets of pins. The first set has ...
  • 31
3 votes
0 answers
451 views

Trouble connecting USB devices with Raspberry Pi Compute Module on custom PCB

I am working with a team designing a PCB that works with the Raspberry Pi Compute Module 3 card. We are having a bit of trouble with the USB ports. The schematic of the USB portion is somewhat similar ...
  • 31
3 votes
0 answers
324 views

Read/Write LAN9512 EEPROM

We are building a device around the Compute Module 3 and since it needs internet access we decided to go with the LAN9512 that was also used in the Raspberry Pi earlier. The LAN9512 requires an ...
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3 votes
0 answers
739 views

How to connect CMOS image Sensor to Raspberry Pi

I'm wondering if it would be possible to take an image sensor out of an old camera and plug it in to a raspberry pi via the csi connector. For Example would it be possible to take one like this from ...
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3 votes
0 answers
404 views

Networking - Two Raspberry Pis communicating over wired connection

As a part of my research I need to have two Raspberry Pis and a Pixhawk all within the body of a UAV. I know I can get one Pi connected to the Pixhawk over mavlink, but how can I get the two Pis ...
3 votes
0 answers
5k views

Pi bluetooth not detecting any devices

Board: Raspberry Pi 3 I have a Pi which is unable to detect any bluetooth peripherals. I diagnosed the bluetooth service by running sudo service bluetooth status which throws the error Failed to ...
3 votes
0 answers
4k views

Possible to repair Raspberry Pi 3 SD card slot?

I accidentally pulled the pi out of the case before realizing the SD card was still attached. The right pad can still be soldered but the left one appears to have been pulled off. Is there anything I ...
3 votes
0 answers
594 views

DS18B20 temperature sensor not found in folder

I've bought the camjam edukit 2 for my pi which includes the DS18B20 temperature sensor. However, after going over the instructions 20 times, rebuilding it a same amount and searching online, I still ...
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3 votes
0 answers
8k views

Connecting an Apple mouse and keyboard to Model B+

I have been given a new Model B+ for Fathers Day. I have connected the computer but my keyboard/mouse that I use with my Mac computer will not work with the PI Do I need a new keyboard/mouse to use ...
2 votes
1 answer
934 views

Problem with 1-Wire devices not showing up on GPIO4

i hope you're having a nice day. For a project i want to implement 1-Wire communication in a Raspberry Pi Zero W. The goal is to use a Maxim Integrated Max17313 Fuel Gauge for inspecting battery usage....
2 votes
0 answers
161 views

Stacking up multiple grove base HATs on Raspberry Pi

I want to stack multiple Grove base HATs on a single Raspberry Pi. This is the HAT i am using https://wiki.seeedstudio.com/Grove_Base_Hat_for_Raspberry_Pi My application needs to interface 24 analog ...
2 votes
0 answers
2k views

pi4 4gb not powering XBOX one wireless dongle

I have a 2GB and a 4GB raspi 4 and the problem persists in both PIs Im trying to control my robot using the xbox one controller. I want to use the dongle instead of the bluetooth to get a bit more ...
2 votes
0 answers
208 views

How to connect "FPV Night Vision QVGA 320X240 Monocular" to raspberry 4?

I am working on a project which need this module to be connected with raspberry pi 4 or 3. I tried some to convert into single RCA cable (worked) but I want to convert it into HDMI. I am unable to ...
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2 votes
0 answers
290 views

Interfacing non bluetooth speaker with Raspberry Pi 3

I want a wired connection between speaker and Raspberry pi 3 Model B. Bluetooth or Wireless connection is not my requirement. Regarding my speaker - it should NOT simply output buzzer sounds but is ...
2 votes
0 answers
1k views

Hardware controlled RTS on a Pi4 not working accurately

We need to use RS485 to talk to one of our custom tools. We need to use hardware controlled rts/cts. I've read so many articles about this but nobody ever says it works for them with fast timing and ...
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2 votes
0 answers
95 views

Any issue with magnet too close to rpi?

I don't think this is an issue, but a search turns up nothing and I just want to be sure. I'm working on a project that involves a single speaker mounted approx. 2.5 to 3cm above a Raspberry Pi 3. ...
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2 votes
1 answer
232 views

Hardware driver for LinuxCNC

Is it possible to create a hardware driver for LinuxCNC on a Raspberry Pi without violating the hardware design philosophy of LinuxCNC (stated here)? If yes, could this driver make use of any ...
2 votes
1 answer
509 views

Multiplexing CMOS Cameras

How is it possible to multiplex 9 CMOS Cameras with raspberry pi to generate 9 images at a time?
2 votes
2 answers
662 views

Could a RPI 3B+ running Android Things support touch-display and display module with different views?

We are currently working on a project with a Raspberry Pi 3 B that will run Android Things NIH40K, 0.4.1-devpreview, Jun 15, 2017. As it runs AT I would like to connect two separate displays, one ...
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2 votes
0 answers
255 views

Raspberry Pi + Windows 10 IoT Core + RS485

Has somebody ever worked with windows 10 IoT Core and used RS485? I would like to receive some signals from the RS485 device. I would like to do this with Windows universal app.
2 votes
0 answers
184 views

Best Way To Power Raspberry Pi Zero and External 4.5 - 36v Circuit

I am creating a drone where I have a Raspberry Pi Zero, and a Motozero. I need to supply the Motozero with power from 4.5 to 36 volts as well as the Raspberry Pi Zero. What is the best way to do ...
2 votes
0 answers
3k views

OpenCV VideoWriter and Hardware h264

I'm working on a python/pygame application, and i'm facing some difficulties when I try to capture a video from a usb camera (640x480) to a h264 encoded file, through OpenCV. Everything work fine with ...
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2 votes
0 answers
1k views

Safest highest operating temperature of a Raspberry Pi 3 Model B

What is the safest highest operating temperature of a Raspberry Pi 3 Model B? I was able to get my temperature up to 77'C by running: fulload() { dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/...
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2 votes
1 answer
276 views

RaspberryPi.Net Libary LCD Display

So my problem is, that we want to control a LCD (HD44780) Display with our Raspberry Pi Model B V1.1. The Libary seems to have a support for it. But there only seems to be one example in the whole web....
2 votes
1 answer
543 views

How to use PI4J with a brushless motor?

I have a Raspberry Pi 2 model B. I would like to be able to control a motor with a regulator and PI4J. I put the black cable to a ground pin and the PWM pin to pin 26. I've worked with servos before, ...
2 votes
0 answers
141 views

Problems with Kali on raspberry pi, plus some mac issues

Just yesterday I was able to boot Kali on my raspberry pi without much of a problem. The following day, however I tried booting it as usual. It showed the boot screen and everything with the four ...
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2 votes
0 answers
63 views

Robot running off Raspberry Pi A+

I am participating in a competition where I need to make a motorized vehicle that goes a distance you learn immediately before competing. What I have in mind is to mount a Rasp Pi A+ and a motor to a ...
2 votes
0 answers
264 views

RF transmission on 314.88mhz

I've been playing around with transmission of RF signals with my pi for a home automation system. So far it has been working great. However, this was just for the 433.92mhz devices. I've managed to ...
  • 121
2 votes
0 answers
94 views

Controlling Stepper Motor Responding Strangely

I'm attempting to simply move a small stepper motor over GPIO using a Sparkfun Easy Driver. This Stepper motor is the one I'm attempting to use. I'm using similar code and configuration to that shown ...
  • 21
2 votes
0 answers
792 views

Specify interrupt in devicetree overlay

I have created a devicetree overlay to add an MRF24J40 transceiver to Raspberry Pi. The interface of the transceiver is SPI and an interrupt request. After some trouble the device finally appears in ...
  • 121
2 votes
0 answers
2k views

Using Raspberry Pi with Arduino GSM/GPRS Shield

Raspberry Pi Model B GEEETECH Arduino GPRS Shield V1.0 (bought from: bit.ly/1G0KYR7) ^ Similar somewhat to: Seeed's GPRS Shield V1.0 | Link: seeedstudio.com/wiki/GPRS_Shield_V1.0 (has more ...
2 votes
1 answer
2k views

controlling rgb led strip via spi and node js

I recently purchased a pi and a string of individually addressable rgb led lights from shenhzen kapata (actually amazon, but they're the ones who sell it) and I'm trying to control it with my ...
  • 121
2 votes
0 answers
166 views

Did my Pi lockup or was it halted?

I couldn't connect to my Pi this morning until I turned it off and on again. I did this at around noon, didn't record the exact time, thereafter it connected via ssh. My sys.log state: Sep 18 23:...
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2 votes
0 answers
362 views

Difference between LCD Displays

I was using a Hitachi HD44780 display hooked up to GPIO pins. Sadly, it got damaged and, in a rush, I had to get a different one. It is a ADM1602U serial enabled display. However I don't plan to use ...
2 votes
0 answers
3k views

Getting a Mimo Monitor working with Raspberry Pi

This isn't a question, as I have finally figured out how to get this all to work. I've had to break the links because I don't have enough reputation. sigh. Instructions to use Mimo Monitors UM-710 (...
1 vote
1 answer
45 views

I can't get My BLDC (Brushless DC motor) to run

Goal Use Pulse Width Modulation (I think that is the standard approach) to control the speed of my BLDC. I have tried so many things #include <stdio.h> #include <inttypes.h> #include <...
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1 vote
1 answer
61 views

RPi High Quality Camera degraded image quality and "spots" covering sensor cover surface; can it be fixed?

My Raspberry Pi High Quality Camera was excellent last year when I wrote this answer including these images but I tried it again a year later and something has gone very wrong with the front surface ...
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1 vote
1 answer
1k views

Enable hardware video decoding in VLC on Raspberry Pi OS Bullseye

As the title says: How can I enable hardware video decoding in VLC (or other player) in Raspberry Pi OS Bullseye? I'm on a Raspberry Pi 3B+. Video playback in OSMC is smooth but in Raspberry Pi OS it ...
  • 111
1 vote
0 answers
43 views

RPi Zero 2: What is the black part next to GPIO 26?

I ordered a Raspberry PI Zero 2 a while ago. Today I wanted to use it the first time. I inserted a SD card with Raspberry Pi OS and powered the Zero 2 with an iPhone power supply. Nothing happened. So ...
1 vote
1 answer
126 views

force_eeprom_read=0, but RPi4 still stuck at rainbow screen

I have made a custom PCB/Hat for a Raspberry Pi and I need to use ID_SD and ID_SC as general GPIOs. At the moment Raspberry Pi 4 gets stuck at Rainbow screen when booting (with Raspberry Pi 3B+ ...
1 vote
0 answers
94 views

Design of Pico hardware divider

I recently found out that Pico has "8-cycle signed/unsigned divide/modulo circuit, per core" [1]. To my untrained embedded eye this seems very fast, does anyone know how they did it? What ...
  • 111
1 vote
1 answer
237 views

Pi Zero extra I2C pins

My use-case is to have multiple sensors with the same I2C address attached to the PI and also a LED screen that I want to attach on it's own. I found that there is a software level overlay BUT it is ...
1 vote
1 answer
77 views

What causes Linuxes on Raspberry Pi to not be able to be installed with an installer?

If you download an ISO for a Linux distro for x86 and burn it onto a disc or USB stick, and put that device into the target computer and start it up, it shows an interactive installer. If you want ...
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1 vote
0 answers
50 views

heartbeat sensor for pi

i want to measure the heartbeat using the pulse sensor. i connected the pulse sensor to a mcp3008 adc and the pi. this is the code i used from pulsesensor import Pulsesensor import time p = ...
1 vote
0 answers
38 views

Which bipolar stepper motor can be used with EasyDriver4.5V A3967?

I have EasyDriver 4.5V A3967 driver and planning to purchase 12V bipolar stepper motor with specs phase: 2 phase voltage: 12 V current: 0.7 A. Phase resistance: 4.0 ± 10% Ω phase inductance: 3.2 ± 20% ...