Questions tagged [hardware]

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

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10 views

Looking for a “high resolution” LED strip

I'm trying to find a high density addressable led strip, mean as many LEDS crammed as close together as possible and their colors can be changed individually. I want to make a spinning blade of LEDS ...
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17 views

7" LCD POWER options

I have a question about powering a 7" LCD. It should be a rather intuitive answer, but I really don't want to risk my screen on the off chance that I'm wrong. While experimenting with things this ...
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31 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 ...
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1answer
119 views

Pi Zero W 1.1 - What kind of component is this? What does it do?

Unfortunately a component (see image, component is encircled in red) is broken/missing on my Pi Zero W 1.1. So far everything still seems to work, but anyway: Do you know what kind of component this ...
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24 views

Powering raspberry pi with 7.2 Volt battery and a Buck Converter with 1.5A output

I've connected the Raspberry Pi's 5V and GND to the Outputs of a buck converter(https://www.droking.com/30W-Power-Supply-Module-DC-5-32.0V-to-0-30.0V-Buck-Converter-Adjustable-Voltage-Regulator-DC-12V-...
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13 views

Pi 4 not working with HHKB Hybrid type s keyboard

I can't find the keyboard device using the bluetooth manager and it does not work when I connect via usb. Any help please!!!
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36 views

Problem with audio

I want to implement Jarvis on my RPi4 and got some problems. I have a Respeaker 4- mic array hat for the Pi and want to use it as an Audio input. As audio output I want to use the 3.5 jack. When I ...
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50 views

Every 24h, network connectivity ceases

Every day my Raspberry Pi 4 4GB loses ethernet (wired) network connectivity (I don't use WiFi on the device). The device is otherwise still functional, but no matter whether I down/up the interface, ...
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2answers
255 views

Can you use the Rpi compute module CM4 without the IO board?

I want to use the raspberry pi for some projects, although the normal pi is too big and I want it to be as compact as possible. I thought about using the compute module(without the IO board) since it ...
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1answer
44 views

Help identifying an SMT component

I have a RPi zero w that is missing a SMT component. Does anyone knows what component is it and knows it specifications so I can try to solder it again?
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116 views

Can i run Counter Strike 1.6 on Raspberry pi 3b+

I really enjoy fps games and would love to play CS 1.6 but i don't know if it's possible to install on a Raspberry pi. Anyone got any tips?
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1answer
51 views

Raspberry Pi Zero GPIO Pins not working from opposite side?

As a disclaimer, I'm new to digital electronics and somewhat new to soldering. I recently bought a standard GPIO header for my raspberry pi zero, but in order to use both the camera part of my case ...
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60 views

working micro pushbutton gives no Input on GPIO RPi4

I use a simple python script (https://github.com/edus44/lakka-gpio-control/) for Lakka GPIO button input on a Raspberry Pi 4. The script works perfectly: If I short wire one of the GPIO Pins to GND ...
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1answer
64 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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27 views

Measurements for port placement

I'm going to design my own Pi 4 case because the existing cases I've found don't really meet my requirements. Where can I find complete measurements for port placement? At https://www.raspberrypi....
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96 views

relay switch switches ON but never switches OFF [closed]

I connected my FL-3FF-S-Z two channel relay board to my Raspberry Pi 3, with gpio 0 and gpio 1 (numbers are from to $ gpio readall). Following some guide, as GPIO generates only 3.3v I have removed ...
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45 views

Switch out the X1 Oscillator on a RPI

Just like a lot of people I'm using a RPi as a NTP server. There is a nice thread about it here: Switch out the X1 Oscillator on a RPI 2/3 User @colintd had a brilliant answer about switching the ...
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2answers
55 views

GPIO extension - USB to GPIO module (NOT GPIO to USB)

I ran out of GPIO on my RPI and now looking for a module to converts USB to GPIO for my Raspberry. I am not interested in converting GPIO to USB, but interested in USB to GPIO. I've been googling for ...
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1answer
51 views

GPIO stuck high after shutdown/halt

I'm new to the world of Raspberry Pi, I'm setting one up as a little PC for a kid. I have a RPi 4 running Raspberry Pi OS, and I've build a case around this heatsink. I have created a simple circuit ...
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1answer
45 views

How is the radio module connected to motherboard (CPU) on Pi-4? [closed]

By this link we can see that in Pi 4 there is Wi-Fi module (called radio module under the picture). But I can't figure out, how is this module connected to motherboard? Is this PCI bus or whatever? ...
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1answer
78 views

USB drive is not visible [closed]

I mounted an Ext3 USB drive using fstab. It works, but I have one issue. Sometimes when I turn on the system, the drive is not visible. I can not find it in mnt, media or in the desktop. It does not ...
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26 views

Physically turn the Raspberry Pi Touch display on and off with a switch

I use a Raspberry Pi Touch Display that I connect like shown in the following picture to my Raspberry. The black and red wires are connected to thee GND and 5v pins respectively. Now I want to ...
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2answers
94 views

Raspberry PI with Linux and C# on it - how to read hardware/sensor info

I need to create a Monitor.Health service that receives pings on each of the client's raspberries each 5 minutes , showing tempreture of the device , is it online and other hardware info that is shows ...
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1answer
25 views

Camera + hardware for sky-watching project [closed]

I would like to build a Raspberry Pi setup with a camera, the idea being that the camera sits outside, pointed at the sky, and sends the video stream to my computer, inside my home. I'd like to use ...
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1answer
62 views

Is joining NEO6MV2 module and RC 522 module together to Raspberry Pi possible?

I am new to this but from my initial project requirements, I will need to join GPS Module and RFID Module to a Raspberry Pi 4. Do the GPIO pins support the required output? Is there any guide on how ...
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20 views

restrict `apt upgrade` to available hardware or hardware version

I have an old-ish RPi 1BP. It's slow, but remains useful for some things. I do keep the software current through periodic apt update & apt upgrade. I've noticed that since the upgrade to buster, ...
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1answer
71 views

Can I stack multiple different HATs on RaspberryPi4?

I want to use multiple different HATs on the same Raspberry Pi. These are the boards I want to use: https://www.sparkfun.com/products/16328 https://www.seeedstudio.com/ReSpeaker-4-Mic-Array-for-...
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1answer
71 views

Raspberry Pi 3B fell to the ground, “4R7” box looks busted. Is dead?

I was toying around with the Pi, left it in a place where I should have not put it, and it fell to the ground. I picked it up again and noticed one of the small "4R7" labeled boxes was kind ...
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2answers
193 views

How can I write a GPIO interrupt driver? [closed]

Having used Python for a simple robotics platform for experimentation with machine learning I've found Python lacks in supporting hardware in anywhere near real time. Polling the GPIO using C is ...
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2answers
192 views

Can you use 1 large SSD device for booting and data (2 partitions) on Pi4?

I want to use one partition for booting (RASPIOS) and one for the data files. The reasons I have are: 1- cost per GB on SSD devices is less and 2-separate devices causes more heat along with increased ...
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2answers
198 views

How to get accurate compass?

I'm building a project based on raspberry pi that relies on fairly accurate compass to be viable. Essentially, if I could know where's North with about 10° of error, I'd be quite happy. I've bought ...
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1answer
492 views

Desolder wifi/bluetooth module on a Raspberry Pi 4

What does the process of physically removing the wifi/bluetooth module look like for a Raspberry Pi 4? How hard it is for a beginner & for someone experienced with soldering? And how likely it is ...
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685 views

Raspberry pi 4 - Hardware offload of h264 video decoding in Chromium

I am trying to develop a web application displayed in chromium in kiosk mod (78.0.3904.108 (Official Build) Built on Raspbian , running on Raspbian 10 (32-bit)). I am hoping to play h264 medias ...
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1answer
46 views

GPIO to control a 12V remote control [closed]

I am trying to automate the pressing of a remote control button by the PI. With the buzzer it works well. If I replace the buzzer with the remote control it sort of works. The remote control has an ...
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2answers
80 views

GPIO to control 12V switch

I am trying to automate our front gate. The gate is operated by a 12V remote control. My idea is to get the Raspberry Pi to press the button and automate this. Working towards this I have connected a ...
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1answer
54 views

rPi4 no longer capable of HDMI output. Eeprom recovery did not help

I have a rPi 4 that died on me, in two stages: First it would only show a yellow screen on HDMI outputs. Then later, it completely stopped outputting HDMI altogether. It seems to be in a reboot loop? ...
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1answer
46 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
124 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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66 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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1answer
77 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 ...
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1answer
118 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
61 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 ...
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1answer
227 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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1answer
71 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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28 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
248 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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2answers
61 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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0answers
36 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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2answers
67 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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102 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'...

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