Questions tagged [hardware]
Questions relating to the physical components that the Raspberry Pi consists of.
215
questions with no upvoted or accepted answers
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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
274
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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 ...
- 61
3
votes
0
answers
149
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Raspberry Pi 4B won't boot, is it dead?
I'm new to the Raspberry Pi world. I was in a charity shop today and I've seen a deal I couldn't resist so grabbed the Pi for 10 euro knowing full well that it could be faulty. Anyway once I got back ...
- 31
3
votes
1
answer
713
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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 ...
- 31
3
votes
0
answers
875
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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
491
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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
941
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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
114
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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. ...
- 361
3
votes
0
answers
407
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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 ...
- 31
3
votes
0
answers
6k
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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 ...
- 131
3
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0
answers
4k
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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 ...
- 131
3
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0
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607
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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 ...
- 31
3
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0
answers
8k
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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 ...
- 31
2
votes
0
answers
590
views
Video decoding HW acceleration broken in Kodi on Raspberry Pi 4 after upgrading to Raspberry Pi OS 12 (Bookworm)
Hardware video decoding worked fine on Raspberry Pi OS Bullseye with its Kodi 19.1. Now that I upgraded it to Raspberry Pi OS Bookworm (Kodi 20.1) (which, as I realized, hasn't been released yet) it ...
- 201
2
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0
answers
93
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USB ports no longer carry data
A lightning bolt took out a number of devices in my home and my raspberry pi 4b 8gb seems to have been affected. All 4 USB ports still provide power to peripherals but there seems to be no data ...
- 121
2
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3
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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?
2
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0
answers
318
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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 ...
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2
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1
answer
1k
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Problem with 1-Wire devices not showing up on GPIO4
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.
To make sure the implementation ...
2
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0
answers
230
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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
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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
264
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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
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0
answers
333
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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
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0
answers
1k
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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
1
answer
527
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Multiplexing CMOS Cameras
How is it possible to multiplex 9 CMOS Cameras with raspberry pi to generate 9 images at a time?
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2
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2
answers
674
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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
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0
answers
257
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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.
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2
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0
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3k
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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
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0
answers
1k
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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
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1
answer
280
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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
558
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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, ...
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2
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0
answers
143
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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 ...
- 21
2
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0
answers
63
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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 ...
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2
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0
answers
267
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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 ...
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2
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0
answers
95
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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 ...
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2
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0
answers
820
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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 ...
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2
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0
answers
2k
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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 ...
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2
votes
1
answer
2k
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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 ...
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2
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0
answers
172
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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
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0
answers
371
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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 ...
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2
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0
answers
3k
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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
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0
answers
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Powering Raspberry Pi 3B+ with Multiple Attachments: Recommendations for Portability
Ok so I'll try and keep this short and sweet. Basically, I have all these attachments for my Raspberry Pi 3B+
Raspberry Pi 7" Touchscreen
Case for Touchscreen w/ Cooling Fan
Raspberry Pi Camera ...
- 11
1
vote
0
answers
39
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How to pick the correct R-Pi
I have a requirement to build a monitoring device with a display. The main conditions are:
Need a MySQL database
Need Internet connectivity via WiFi
Capable of reading MODBUS slave device, and other ...
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0
answers
46
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Empty Pi Hat/Bonnet
Does anyone know where to find a Pi Hat or Bonnet that is empty? By that I mean a PCB that has the connectors to solder stackable headers onto, but no connections just raw PCB? The reason I want ...
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1
vote
1
answer
2k
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Raspberry Pi Zero 2 W to 5GHz Access Point
i know that Raspberry Pi Zero 2 W are not able to connect to 5Ghz access point. Would it be possible with adapter over USB to connect to 5Ghz access point?
I found several adapters in Internet, but i ...
1
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0
answers
53
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Interfacing Saitek Megamaster MX-530 with Raspberry Pi
I found out an old Saitek Megamaster MX-530 joystick that I used to play games on old Pentium machine with Win XP. I've tried to used on modern system buying midi/game port converter (25 pin) to USB ...
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1
vote
0
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70
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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 ...
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1
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1
answer
65
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Sharing my keyboards across multiple computers
hope this finds you well. I was watching a video on YouTube, I think the channel was Linus tech tips and one of the guys was using something like a hat to check his brain waves or something of that ...
1
vote
0
answers
73
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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
43
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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% ...
1
vote
0
answers
834
views
GPIO INPUT is always HIGH
I am working on a project with HC-SR04 Ultrasonic sensors. I am a beginner in raspberry-pi.
I have 3 sensors which are calculates the distance. But one of them has problem which is echo (input) pin ...
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