Questions tagged [hardware]
Questions relating to the physical components that the Raspberry Pi consists of.
942
questions
0
votes
1answer
15 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-...
-1
votes
0answers
29 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 ...
1
vote
1answer
33 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 ...
0
votes
2answers
77 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?
0
votes
1answer
20 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 ...
0
votes
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, ...
-1
votes
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 ...
0
votes
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 ...
0
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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=...
0
votes
2answers
44 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 ...
0
votes
0answers
19 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'...
1
vote
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?
0
votes
2answers
55 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?
1
vote
1answer
40 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
votes
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
vote
1answer
98 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 ...
2
votes
0answers
46 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 ...
0
votes
0answers
53 views
Hardware watchdog during reboot
I'm creating a prototype of a Raspberry Pi 3B+ that uses Mender as the update manager. My goal is that if the Raspberry Pi is stuck somewhere in the boot process (Corrupted Kernel that cannot even ...
2
votes
1answer
33 views
Audible ground noise from ultrasonic sensor (VMA306)
I'm having problems with audible noise from a VMA306 sensor. Everything is working great apart from the audible low frequency buzz after my code is done running. The sound stops when touching any ...
1
vote
4answers
111 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 ...
2
votes
1answer
25 views
RPi 0W: some GPIO pins apparently not working
I have a Raspberry Pi 0 W, connected with both a WaveShare Battery HAT and a WaveShare 1.44" LCD screen with joystick and three buttons.
The screen works, the joystick works partially and the three ...
1
vote
0answers
29 views
Getting PC hardware info through pi zero
I am trying to get some info about the hardware on my PC through my pi zero for example CPU temperature and RAM speed etc. I have connected my pi zero through a single usb cable into my PC (I am able ...
1
vote
1answer
57 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 ...
-1
votes
1answer
26 views
Does “3B+ onwards” include 3A+?
I want to buy the following (emphasis mine) for my 3a+
The official Power over Ethernet (PoE) add-on board for the Raspberry
Pi. Use this HAT to power a Raspberry Pi via an Ethernet cable,
...
2
votes
2answers
368 views
overvoltage on POWER SUPLY; not on the gpio pins
I am feeding 5.41 V on the microUSB power supply pins to a raspberry Pi 3B. Yeah, I know, USB = 5V +/- 5%. Because reasons, I have to keep doing this for a while. What I find is that dmesg ...
1
vote
0answers
49 views
Cannot log in to raspbian buster with default username and password
I have an issue logging in to my new raspbian buster (raspbian 10 Raspbian Buster with desktop and recommended software) using the known default {pi, raspberry}.
My keyboard is in English and I have ...
1
vote
0answers
26 views
Nothing on screen while booting
I am having trouble booting my raspberry pi 0 w. I am using a 32 gb micro sd card with noobs downloaded on it. I have followed the steps on the raspberry pi website to boot the pi, but when I plug in ...
0
votes
0answers
52 views
compiling hardware-accelerated VLC into YOCTO for Raspberry Pi 3
How does one achieve it to compile a hardware-accelerated (in this case via the Broadcom VC4) version of the VLC media player for the Yocto project?
I already tried to
install VLC via the local.conf ...
1
vote
0answers
243 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 ...
4
votes
1answer
108 views
How is CPU in Raspberry Pi 4 +36% faster than for Raspberry Pi 3?
CPU benchmarks show that the Raspberry Pi 4 outperforms Raspberry Pi 3 by +36%
https://www.geeks3d.com/20190930/raspberry-pi-4-vs-raspberry-pi-3-cpu-and-gpu-benchmarks/
How is this possible given the ...
2
votes
1answer
39 views
Use Raspberry with two devices that require 3.3v pin
I'm planning a project with an RFID reader that connects to the GPIO pins on a RPi2 and will use the 3.3v pin. Additionally I wanted to add an active buzzer, which also would require an 3.3v pin.
Is ...
1
vote
0answers
34 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 ...
0
votes
0answers
82 views
Problem with DIY Smart Glasses Projection module
I am making Smart glasses which will display android app, click pictures, notifications and many more, and which is to be displayed on a small prism I searched a lot of posts online, many of then ...
2
votes
1answer
278 views
Raspberry Pi4 vs 4B--synonymous?
I am embarking on a cluster project using PoE hat. PoE hat is compatible with RPI4B. Vendor is selling "Raspberry Pi4."
https://en.wikipedia.org/wiki/Raspberry_Pi#Specifications shows only 4B, so I ...
0
votes
1answer
35 views
Raspberry Pi Connecting to 8 calculator screens
First of all I want to say that I am a complete noob with hardware so sorry if this question is stupid.
What I want to do:
I am designing a board game, in that game I want to have a raspberry pi ...
2
votes
0answers
44 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 ...
0
votes
1answer
54 views
How to install a Kuman 7" Touchscreen with Raspberry Pi
New to Raspberry and just experimenting for now. I bought a Kuman 7" touchscreen and got the display to work, but I am having trouble installing the matchbox touchscreen software.
I moved the ...
1
vote
1answer
72 views
Which power supply should I get?
So I am using my raspberry pi 3 for octoprint as well as using it to run a Nas with an attached usb HDD.
I am getting the undervolt/overtemp icon on octoprint and get "throttled=0x50000" when running ...
0
votes
0answers
22 views
C++ programming - Class for Motor rotation and control for washing machine embedded system device layer error?
#include <iostream>
using namespace std;
int main()
{
// declaring variables:
int MotorControl;
int MotorRotation;
MotorControl = on;
MotorControl = off;
// process motor control and ...
2
votes
2answers
57 views
Pi motor HAT code question
I'm using a raspberry pi 4b and it's running Raspbian 10 (Buster). I have a Geekworm Pi Motor HAT Full function Robot Expansion Board. I'm using the GitHub code: Raspi-MotorHat-master. I'm using ...
1
vote
2answers
54 views
What's the best way to transfer data one-way from one Pi to another?
I would like to connect some sensors to one Pi and have it collect data from the sensors exclusively. This Pi will have only sensors and no display attached. Another Pi will act as a computer in ...
1
vote
0answers
76 views
Rpi AdaFruit python library controlling SPI MCP3008 of eTape Liquid Level Sensor problem
I have a rpi4 and have successfully replicated the project listed here using the eTape sensor (etape tutorial) I am satisfied with the performance using long breadboard and T-cobbler. In order to make ...
0
votes
0answers
78 views
Pigpio Hardware PWM callback is slow
I am trying to drive a servo motor with Raspberry pi. I have selected pigpio library to access GPIO. I need to send a specific number of pulses with a given frequency. But when I callback a function ...
1
vote
1answer
58 views
Don't know how to connect multiple MCP23017
I need more pins on my raspberry pi 3 so that I can use it to manage the lights in my house. I am going to use relays and MCP23017. I need to know how to use 8 of the MCP23017 on my raspberry pi. If ...
0
votes
1answer
39 views
Setting permission for Ultimate GPS HAT from inside Sticky Finger's Kali Pi
I'm running Sticky Finger's Kali Pi on a Pi 2 with the Adafruit Ultimate GPS HAT connected.
The HAT is accessible from the OS under /dev/ttyAMA0, but the permission is set to root:tty rw--w---. With ...
12
votes
1answer
2k views
Raspberry PI 3B. Wifi and bluetooth shared antenna?
I'm working on a project that involves WiFi and BLE, and for this I would like to use an esp32 due to its lower price, but there will be timing issues since the wifi and Bluetooth antenna are shared.
...
1
vote
0answers
25 views
Raspberry Pi Zero(s) not booting up consistently
I have three Raspberry Pi Zeros (1.3), all between 3 and 4 years old. On two of them, it usually takes several tries of connecting and disconnecting power to get them to turn on. In about 1 out of 5 ...
3
votes
1answer
177 views
How to go from prototype to production
This question deals with Raspberry Pi but it is not limited to it.
I have build some prototypes using Raspberry Pi. They work well. What should I do if I want to transform my prototypes into ...
2
votes
3answers
149 views
Ribbon Cable for bridging the headers of Raspberry pi and Custom hats
Hello I am in need of a ribbon cable for my custom pi hats. The problem with ordinary ribbon cables such as this
I could not make it to align the rows of the pins will get swapped because of the ...
2
votes
1answer
70 views
How to manually control a shake activated lamp using raspberry pi?
I got this cool potion lamp for Christmas though it’s only shake activated (more like you have to tap on it really hard) and I was wondering if there was any possible way I could connect my raspberry ...
