Questions tagged [hardware]

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

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27 views

Canakit fan that came with raspberry pi 4 louder then usual

So I have a raspberry pi 4 running 24/7 (to keep my discord bot running). I noticed recently that the fan that came with it (from Canakit) seems to be louder than usual. Should I be worried? I have it ...
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0answers
11 views

Raspberry Pi 4B or IO Boards + Compute Modules 4 for a raspi cluster?

I am currently thinking of building a small home cluster using raspberry pi hardware and planned on using Raspi 4B's but then came across those IO Boards in combination with compute modules. I was ...
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9 views

Setting up the hardware on a Tor server

I live in the UK and have a BT broadband router on which I run a TP-Link 1GB Ethernet hub router, all of my computers run over the TP-Link 1GB Ethernet hub router, which connect to the BT broadband ...
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0answers
34 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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3answers
71 views

Use a usb-c charger with variable voltage for charging Pi4 [duplicate]

I have read here that is possible to charge you pi4 with 3rd party chargers that supply 5V 3A. I am wondering if I can use this 20W charger, which can deliver differnet voltage level (5V/3A, 9V/2A, ...
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1answer
41 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....
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0answers
41 views

BPW21 photodiode on Raspberry Pi 4

I am completely new in Raspberry Pi, but I have to make a system, that can receive data from very high frequency flickering LED. I read that phototransistors and photoresistors are too slow for my ...
-2
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1answer
47 views

Raspberry pi 4 crashes when opening VLC, Openshot, or RPI-Imager

I am using a Raspberry Pi 4 model B 4gb, and any time I open the apps stated above, the window opens, it doesn't display anything, the window is super huge and crashes. Multiple times has this ...
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1answer
33 views

What is the default pin mode for GPIO 7?

I thought that all of the GPIO pins defaulted to input but I'm seeing that GPIO 7 (so is GPIO 8) is set as an output after boot up. Is it being used by something? If I take it over will I cause ...
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0answers
24 views

What connector is used for the keyboard on the Raspberry Pi 400?

I'm trying to find out what is the connector used to connect the keyboard on the Raspberry Pi 400 to the board. But doing a Google search of Raspberry Pi 400 internals only shows the results (in the ...
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1answer
21 views

Stepper motor code - GPIO.LOW not needed?

I am following the Freenove code (ref:- FNK0020 page 202 https://www.freenove.com/tutorial.html) to program a stepper motor. I have simplified the code a little, in any case as far as I can tell the ...
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0answers
15 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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0answers
25 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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0answers
37 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
136 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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25 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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0answers
19 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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0answers
45 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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1answer
59 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
350 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 ...
1
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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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0answers
206 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
62 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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1answer
65 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
72 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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0answers
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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0answers
128 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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1answer
50 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
58 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 ...
3
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1answer
64 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
47 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
103 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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0answers
28 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
151 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 ...
0
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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 ...
2
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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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0answers
21 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
76 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
79 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
297 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
278 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 ...
3
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2answers
270 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 ...
1
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1answer
682 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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0answers
882 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 ...
0
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1answer
47 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
85 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
62 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? ...
0
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1answer
47 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, ...
3
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1answer
160 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
77 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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