Questions tagged [hardware]

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

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1answer
35 views

what servos should I use? [closed]

I want to make a humanoid robot with my pi, but am unsure of what servos I would need. I did some research and found out they a rated in kg/cm, so I calculated the weights they would be lifting, ...
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1answer
289 views

Long range interface between a Raspberry Pi and a smartphone? [closed]

I would like to control a Raspberry Pi 4 with my smartphone (for my drone). Now I'm looking for an interface between the RPi and my Android phone. Requirements: Control with a web interface or app ...
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1answer
210 views

Setup respeaker pi-hat 2 on RPI ZW

I am trying to run snips on my rpi0w, and has mounted the respeaker pi hat on to it. Installed the driver using git clone https://github.com/respeaker/seeed-voicecard cd seeed-voicecard sudo ./...
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1answer
116 views

edac-utils on Debian 8 - Jessie

I have Jessie installed on my Raspberry Pi Zero W system. edac-utils were installed successfully using apt-get install edac-utils, but I cannot use them somehow, do I need to manually set edac drivers ...
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0answers
35 views

Knocked off an SMD from Raspberry Pi Camera Rev 1.3, but camera still works. Is the SMD needed for continued operation?

I accidentally knocked off and lost an SMD labelled "C9" from the Raspberry Pi Camera. The Camera still works, and I am unable to spot any differences. What is the role of the capacitor, and ...
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0answers
25 views

PIR sensor always high with Raspberry Pi3 without breadboard

I have a HCSR501 PIR motion sensor, which has 3 pins (Vcc, Out, Gnd) that I've connected to 5V, GPIO 26, and Gnd respectively. Despite following all the steps in tutorials for interfacing the sensor, ...
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0answers
39 views

Delay/Lag when controlling motors with arduino from raspberry pi

I'm making a car-type-thingy where I control motors connected to an arduino with a raspberry pi via serial communication. I'm using the adafruit motor shield to control the motors. I want to control ...
53
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5answers
130k views

What is the maximum / minimum operational temperature?

As per the title, what are the maximum and minimum operational temperature ratings of the Pi before it stops reliably working? Could this also depend on the SD card in use?
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1answer
26 views

Raspberry Pi 4 - BCM2835 Library - SPI1 - data mode 1

I use the BCM2835 library to communicate in SPI with an ADC. The SPI0 interface is already used by a touch screen (https://www.pi-shop.ch/pitft-plus-480x320-3-5-tft-touchscreen-fuer-raspberry-pi-model-...
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1answer
141 views

getting the sound and mic to work from google aiy kit on your own image

I bought and installed the Google AIY sound kit and am trying to get it to work with my own image. i followed their hacking.md file and installed all the hardware drivers but "arecord -l" shows no ...
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2answers
79 views

Can I use a USB drive instead of a micro sd card?

I have a USB but not a micro SD card. I installed the operating system onto it. Can I use that as the storage and OS layer for my Raspberry Pi 4?
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0answers
32 views

Can no longer ping IP addresses

I set up my raspberry pi and install pi hole. I went through the typical steps, and I uninstalled and reinstalled. Afterward, I can no longer ping external ip addresses. In every other way, my ...
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2answers
375 views

Can the Raspberry Pi 4 better distribute Python scripts to all four cores?

This relates to previous questions regarding the GIL (Global Interpreter Lock) for Python on the Raspberry Pi. My question has to do with the new processor on the Pi 4 - does it still have the same ...
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1answer
37 views

How to connect harness cable to male pins of Raspberry pi

I have a raspberry pi and omron sensor d6t. This sensor comes with connector in which you can connect harness cable to it. It looks like below: For my development purpose I connect the wires from ...
1
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1answer
93 views

Record 5.1 Surround Sound

I want to record audio for 5.1 Surround sound. My goal is to use 5 diy shotgun microphones with electret microphones being connected to a rpi that records and encodes to something like ac3 or at least ...
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2answers
78 views

RP3 isn't working after months of not using it

So, I haven't used my RP3 for months because I was busy with other things to do like school and exams. Now when I took out my RP3 and plugged it into a power supply, I noticed the power goes off after ...
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1answer
21 views

Raspberry Pi shows all I2C addresses in use while nothing is connected

I've been building an autonomous boat with a raspi zero, and today I added a new i2c device. I first disconnected two other I2C devices I had attached. I then used i2cdetect -y 1 to verify that no ...
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1answer
67 views

Is it possible to use PAPI on a Raspberry Pi 4B with raspbian buster?

I want to use the PAPI library to record hardware performance counters during benchmarks, but it does not seem to work on my Raspberry Pi 4 B. Installing PAPI was not a problem, but there are no ...
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1answer
334 views

Wiring Omron D6T Thermal Sensor to Raspberry Pi Zero W with Adafruit T-Cobbler Plus

I have a Raspberry Pi Zero W connected to a Adafruit T-Cobbler Plus and breadboard. My question is regarding wiring. I have followed tutorials to create simple circuits, however, I am struggling to ...
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0answers
25 views

USB Soundcard: 2nd configuration doesn't show up on raspbian, but does on MacOS, Ubuntu on a laptop, and Windows. Is this a hardware issue?

I'm trying to get the usb soundcard embedded in a DJ mixer (Allen & Heath Xone23C) to play nice with a raspberry pi for the sake of using it with Xwax, an open source dj software. The problem is, ...
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1answer
85 views

Rpi B USB Not Working

I have an early pi B 256 MB RAM on which the USB & maybe the ethernet sockets are dead, as I can't get access I'm not sure. When I power up the OS seems OK (Raspbian & OSMC). The wired mouse &...
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1answer
752 views

Raspberry Pi Zero hardware based video encoding

I'm trying to build a dashcam with a Raspberry Pi Zero with an official Raspberry Pi Camera (version 2) in an official Raspberry Pi Zero case mounted with a old GPS device cradle. I installed motion ...
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1answer
109 views

Raspberry Compute Model 3, is hardware opensource and approach to integrating HD camera on board?

Im planning to build a home security video surveillance to record video and stream it. This is a personal project but I want to approach it with a production ready mindset, as a challenge for myself. ...
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1answer
62 views

Desoldering ports on Pi4

Are there specific considerations to quality of traces/pcb for data? I want to desolder the ports on the Pi4, replace them with pins and mount the Pi to a dumb board that extends the lines to put the ...
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1answer
272 views

How to send and receive data between RPi and PIC33E microcontroller via USB?.

This is my first project with PIC33E, and both the devices will be connected by USB only. Rpi will have a User Interface (written in Python) and which will enable the user to send and receive data. ...
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2answers
56 views

Raspberry Pi using a laptop? [duplicate]

So I tried using a laptop to install Raspberry Pi, without connecting the USB cable to a keyboard and mouse, but I am not seeing any Raspberry Pi display on my laptop screen? Do I need a keyboard and ...
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7answers
33k views

Using PCI or PCIe Devices

Is it possible to use some sort of adapter, or even to solder a device to the Raspberry Pi board to support PCI or PCI express devices? I'm thinking smaller devices such as NICs or Sound Cards. I ...
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1answer
394 views

Change default (as in nothing plugged in) screen resolution

I will probably be using my Raspberry Pi (running Ubuntu Mate) for remote desktop, but not all of the time. Sometimes I will want to plug it into a monitor. When it's not plugged into a monitor, I'd ...
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0answers
12 views

Raspberry Pi 3 : how to find device number and card number with bluetooth

I'm trying to set up google assistant on my raspberry pi with this guide: https://pimylifeup.com/raspberry-pi-google-assistant/comment-page-2/?unapproved=27549&moderation-hash=...
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1answer
250 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....
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2answers
45 views

How do I know that a Dual-Band USB WiFi dongle will work on Raspbian or other Linux distrobution?

How do I know if a Dual band USB WiFi dongle will work on a Raspberry Pi running Linux? I know that Linux must have a driver that supports the wifi chipset used in the dongle. But with the number of ...
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0answers
20 views

Multi-channel Audio Recording with asoundrc - sudo sound card not appearing

I'm trying to find a way to record audio from 4 separate sound cards at once, using a raspberry pi running with rapbian. From what I've read it should be really straight forward so I'm not sure what I'...
2
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2answers
610 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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1answer
89 views

Unable to control and count RPM of 2 motors in single python code in raspberry pi

I'm trying to count rpm of dc and controlling its rpm using PID controller motor which I have done successfully in my code as shown below. But when I try to count RPM of 2 DC motors simultaneously in ...
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2answers
305 views

sense hat sample “snake” returns “event device not found” error

My "sense hat" sits ontop of a raspberry pi 3. I've completed the installation instructions found at https://www.raspberrypi.org/documentation/hardware/sense-hat/ lexu:~> sudo apt-get update lexu:~...
2
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1answer
375 views

What Circuit Should I Use to Hardwire Raspberry Pi to Doorbell?

I am trying to connect my raspberry pi to my hardwired doorbell in order to send a text message when the doorbell button is pushed. I have successfully sent the text message using a button connected ...
1
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1answer
659 views

Raspberry Pi 3 Model B- 3M Touch Systems

I connected yesterday a Raspberry Pi 3 Model B at a 3M touch Systems touchscreen. For installing I followed this tutorial that I found here: Inverted GPIO Touchscreen (Using 99-calibration.conf) What ...
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0answers
21 views

Raspberry Pi FlexRay HAT [closed]

I've been searching for a couple of days for a FlexRay HAT / module for Raspberry pi without success. Is there such a module available?
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3answers
6k views

Raspberry Pi 3b+ not booting

I got a raspberry pi 3 b+ for Christmas and yesterday whilst installing a Pi Hat's Software (Rasp.io Duino) it just flat out died after showing that there was an under-voltage, even though I was using ...
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2answers
61 views

Can I use HDMI 1 instead of HDMI 0?

I am using a raspberry pi 4 and I only have an adapter, so it's to big to fit in HDMI 0 is there a way I can make it work with HDMI 0?
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1answer
428 views

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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1answer
41 views

Feasibility of a coprocessor socket on the next gen Rpi [closed]

I'm aware of several different constraints on the Pi5 (and beyond), and I was hoping someone could give the full list and what specifically prevents such a feature (and why). The next Rpi will still ...
0
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2answers
37 views

Is it safe to underpower my raspberry pi?

I have bought a raspberry pi 4 B. But I don't have a powerfull enough power suply, and won't be able to get one in a couple of days. IS
1
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1answer
107 views

Pi 4 does not see SD. Can't boot from SD-card

My Rpi 4 doesn't see the SD-card. I have switched SD-cards, formatted them all correctly. Also used both Raspian and Noobs. Nothing helps because it does not see the cards. Every 'solution' on the ...
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4answers
114 views

External hard disk disappears after a few hours

I have an external hard disk drive, formatted with ext4 and connected to my Pi 3B+ running Raspbian with Kernel 4.19.97-v7+. Every now and then, usually after about 12 hours, but sometimes a few ...
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0answers
36 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 ...
2
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1answer
1k 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 ...
2
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0answers
48 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 ...
1
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1answer
3k views

Why is my pi camera v2.1 detected but not taking pictures?

Thanks for your help. Yesterday I moved my Raspberry Pi cam v2.1 with the rpi robot chassis and the camera won’t take pictures. But, the day before, the camera functioned properly. Why do you think ...
1
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2answers
1k views

Waveshare 4inch LCD drivers, error after installation: PANIC: VFS: Unable to mount root fs on unknown-block(179,2)

Problem I am attempting to install the drivers for this Waveshare 4inch LCD (A) touchscreen; however, after I have installed the drivers and reboot I receive the error (displayed in the HDMI monitor, ...

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