Questions tagged [hardware]

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

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20mhz GPIO signal: possible on Raspberry Pi models?

I am wondering whether any model of the Raspberry Pi can reliably output an 8-bit 20mhz signal into 8 GPIO pins at the same time. Basically I am trying to read 8-bits from a file at a time out to 8 ...
Patrick Hennessey's user avatar
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Problem when testing module DAC MCP4922 with Raspberry Pi

I'm encountering an issue while testing a custom-designed DAC module that utilizes an MCP4922 chip as its primary processor. The vendor provided C language test code for ESP32-S3, but I intend to test ...
Hien_lee's user avatar
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Repurpose IR blaster LEDs

I'm currently using this single IR transmitter https://de.aliexpress.com/item/1922513322.html to send IR signals. It works but its quite limited in range. That's why I'd like to reuse only the IR LEDs ...
Nico's user avatar
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Powering a RPi 4 a 6V Peristaltic motor (~4mA) and 2 12V Peristaltic motors wired to 8 Relay module from 12V variable power supply

I am creating a smart garden panel basically which is incorporating a RPi 4 as the brains and has 3 peristaltic motors. 2 of which are 12V and 1 is 6V which draws about 4mA of current to run, this is ...
J Dubb's user avatar
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Pi 5 vs. Pi 4 and External HDD

If I lsusb I see my portable hard drives. If I fdisk -l I do not. More concerning, when I listen closely to the drives that are plugged in, I hear them cycling every few seconds. I have a 5 amp ...
addohm's user avatar
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191 views

Alternative Power Supply for Raspberry Pi 5 with 67 watt

I don't know why, but my original Raspberry power supply doesn't work anymore. I found a power supply at home, but it provides 67 watt instead of the original 27 watt. Is this a problem or could using ...
Jakob's user avatar
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Is the Raspberry Pi 5 Power Supply Compatible to the Pi 4

I need a new power supply for my Pi 4. Somewhen I will use a Raspberry Pi 5, but it needs the quite special Raspberry Pi 5 power supply. Is the Raspberry Pi 5 PSU (officially) compatible to the ...
Cellcon's user avatar
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Will a L298N Control a Maxxair RV Fan with a Raspberry Pi?

MaxxAir RV Exhaust fans are 12v DC motors with a 5 amp max draw. People have replaced the boards with these: https://www.amazon.com/gp/product/B08JG3CD8F/ref=ewc_pr_img_2?smid=A2RFU0Q5Y99ZUG&psc=1 ...
Matt Ralston's user avatar
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How do I put more than one pi on my network

as you can probably tell from my stupid question I am a rank beginner with the raspberry pi. I am very keen however as I am the proud owner of 5 raspberry pi 4's and 4 Rapsberry pi 5's (I am yet to ...
ozjohnno's user avatar
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Freezing in Raspberry Pi 3B+

I would like to inquire about the circumstances under which the Raspberry Pi 3B+ may experience freeze when connected to multiple devices via an Ethernet gateway (each of these devices having ...
Hien_lee's user avatar
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RasPi3B+ won't read SD cards

As stated the old rpi 3B+ worked fine until 1 boot where it no longer read the SD cards. (ACT light not lighting up at all, PWR light constantly on.) Happened after I tried swapping from dynamic IP to ...
Corran O's user avatar
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73 views

What sort of cap should I use for antenna connector?

I plan to use CM4 with a Wi-Fi/Bluetooth antenna. The antenna will be detachable from housing of the designed product. What sort of a cap should I use? Options are shorting and non-shorting. Edit: CM4 ...
maciek's user avatar
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Using Raspberry Pi to control light dimmer switch

In my house I have my lights hooked up to an ELKO 400GLI. I've not found good spec sheets for it online, but what it seems to do is control the brightness of the lights using a copper coil. What I ...
SirAchesis's user avatar
1 vote
1 answer
70 views

Raspberry Pi hardware ( water Pump + soil moisture)

I have a water pump for Raspberry Pi (https://thepihut.com/products/amphibious-horizontal-submersible-pump) that I want to use. Do I need a relay module for this water pump to make it work with ...
Huzzy's user avatar
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Hooking up a rotary encoder to raspberry pi 4

There are a ton of questions on this, and I'm pretty new at working with rotary encoders. I purchased this one Taiss E38S6-600-24G, thinking (incorrectly I might add) that it would be a simple thing ...
Greg W's user avatar
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camera module isn't getting detected

Lately, I have been having some problems with my pi camera it used to work but no it isn't it is Raspberry pi camera 1.3v OV5647. the pi is falling to detect it. supported=1 detected=0, libcamera ...
Mohamed Ahmed's user avatar
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372 views

Is there any way to give the Pi hardware HEVC or AV1 real-time encode support?

I’ve been working on a project for a while that requires streaming video off of the Pi over cell data with as little latency as possible. In my case the Pi4/CM4 does not have fast enough H.264 ...
OldAmmo's user avatar
0 votes
2 answers
221 views

Slow pigpio, much slower than RPi.GPIO

I'm developing a system based on Raspberry pi 4B, with a 32-bit Bullseye OS. I'm using pigpio for SPI and GPIO, and I have observed that the delay between command executions is huge. I have run a ...
kubajed's user avatar
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How can I run a Raspberry Pi for a long time without disk failures?

I tried running Pis on SD cards. Those failed after days. Then, I switched to USB thumb drives. I tested two models only so far (Store 'n' Stay NANO and SanDisk Ultra Fit, 32 GB). They fail within ...
LiterallyCode's user avatar
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What is the board to board connector of CM4 to IO board?

I'm trying to draw a new board for hobby project that utilize the CM4 (Compute Module 4). However, I didn't found any footprint for the connector module of the board to board connector between CM4 and ...
Weishan Yang's user avatar
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Creative ideas for truck display

I have an older F250 with an overhead console that the 28 pin lcd has went out on. The lcd displays compass, miles till empty, ect. It has a 28 pin display from Futaba. Any creative ideas on putting a ...
GeorgiaDawg's user avatar
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Interfacing a Rpi with absolute encoder using RS-422 (SSI)

So I am working on a project that requires me reading from an absolute encoder. It uses SSI (RS-422 protocol) and the datasheet is the following: https://www.hohner-elektrotechnik.de/upload/data-sheet-...
Bohm Arahnmob's user avatar
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Raspberry Pi 4 8GB not booting Rasbian (green led blinking 3 long, 3 short; 3lL/3S - "I2C error - Pi 4")

For starters, this is the exact product I purchased. I'm not from the US and I have little access to RPis, so I bought it during my vacation (around Dez 20). It's a RPi model 4B, 8GB and what seemed a ...
Fabio Freitas's user avatar
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1 answer
87 views

Controlling multiple electromagnets from one Raspberry Pi

I have a need to build a spring mounted table, 12" square solid top in red, springs in blue and bottom in green, as in the diagram I need to place a solid ball on the top board so it rolls ...
Nicholas Walton's user avatar
5 votes
1 answer
10k views

Did the Raspberry Pi 5 drop hardware encoding support?

Does the upcoming Raspberry Pi 5 have any hardware acceleration for video encoding? The technical specifications only list HEVC decoding, but there's no mention of hardware encoders. The reviews I've ...
zorleone's user avatar
2 votes
0 answers
1k 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 ...
Petr's user avatar
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Capacitive Touch Controller Help

hoping somebody can point me in the right direction. I've done some research but feel a bit stuck. My intention is to use an Android Tablet I found on Ebay as a Homeassitant dashboard, bought it with ...
Christopher Adkins's user avatar
-2 votes
2 answers
206 views

How to physically remove WiFi from 4B?

I am closely following Scott Young's training on working with deep focus. I have a new 8GB Raspberry Pi 4B along with an Samsung 870 SSD and NVMe to USB 3 converter - I am working just right. But as ...
R J.'s user avatar
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Moving an external hard drive to a fresh install

I use a pi4 with 32-bit raspbian and a USB drive with an ext4 partition as a NAS. I want to upgrade the pi4 to 64-bit through a fresh install. If I reinstall raspbian with the same user/pw, will my ...
directed2172's user avatar
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38 views

Are BCM2711's CPUs always running in 'secure' world?

If SoC's don't use TrustZone, according to this answer it means that the CPU starts in the 'secure' world but does not change to the 'normal' one. Is this the case with the Raspberry Pi 4's BCM2711? ...
Misalis's user avatar
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0 answers
134 views

Issue with Raspberry Pi 4 and Monitor Resolution

I recently got a raspberry pi 4 (8GB) and a 1080p monitor. I have installed Kali linux 2023.2 and parrot sec os 5.3 but my 1920x 1080 monitor isn't working with my raspberry pi 4, and keeps defaulting ...
Ahmed Murtaza's user avatar
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1 answer
1k views

I2C Device is not detected

Another issue arises since my last question which I have not solved yet. I am trying to use SGP40 sensor on Raspi4 the sensor has built-in pull up 10k resistors in both SCL and SDA, the sensor VLogic ...
Zak's user avatar
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1 answer
106 views

did I fry Raspi I2C pins?

So I wanted to test a sensor I have on the pi, the sensor has on-board level switchers supports both 5V and 3.3V with a 10k pull-up resistor for both SCL/SDA, Mistakenly I wired the Vin into the 5V ...
Zak's user avatar
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0 answers
63 views

How to interface 6 HC-SR04 ultrasonic sensors rasberry pi

I am a beginner to Rasberry Pi and working on a parking warning system for a go-kart. The plan is to use 6 ultrasonic sensors (3 at the front of the kart and 3 at the back) to achieve distance ...
Pasindu Danthanarayana's user avatar
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0 answers
26 views

Installing operating system (Raspberry Pi)

Hi, I am trying to start a project and this is the first time I am using Raspberry Pi. I intend to create a retro gaming console, but I am unsure what kind of Operating system I should use. I see it ...
Archit Thakur's user avatar
0 votes
1 answer
35 views

Avrdude with Pi3B problem with dependencies

I've installed the newest version OS, but now I have to fix connection with my additional components. I have to install avrdude_5.10-4_armhf.deb. I always used this tutorial. However when I try ...
Dafik's user avatar
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-1 votes
1 answer
275 views

SOLVED OSError: [Errno 5] EIO wit a raspberry pi pico

I am using the Raspberry Pi Pico with this code: #Pico Invaders! # # TODO : Implement alien shots, Shields, Sound from machine import Pin, I2C, ADC, PWM from ssd1306 import SSD1306_I2C import time ...
Hogarth's user avatar
0 votes
0 answers
513 views

Trying to do hardware H264 encoding with gstreamer on a Raspberry Pi 4B

I am attempting to do hardware-accelerated H264 encoding on a Raspberry Pi 4B. I am running bullseye with an aarch64 kernel and a 32-bit userland: ben@raspberrypi:~ $ cat /etc/os-release PRETTY_NAME=&...
Ben Mesander's user avatar
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0 answers
29 views

HDMI port on old raspberry pi physically hot when ran on batteries?

I have a pi with a step-down and some batteries and for some reason the hdmi is the hottest part, even when I don't have a hdmi plugged in? Could somebody explain
Desmond's user avatar
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JamHat Button latching & timing

replacement question posted for clarity. I am trying to use JamHat buttons to direct my Python 3 Robot program. A typical code snippet demonstrates the problem. Run the snippet with the indicated ...
Roger Mckee's user avatar
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0 answers
39 views

CamJam LED HAT buttons do not latch

I'm using the CamJam Jam Hat, 6 LED, 2 Button, 1 Buzzer HAT. Research found simple scripts which run and easily find Button presses. Inserting the same code in a larger program and checking the same ...
Roger Mckee's user avatar
0 votes
0 answers
24 views

Dead Raspberry Pi, Rev 1.4, please help me identify model of the chip [duplicate]

Hi! I am trying to fix shorted out Raspberry Pi 4B and I identified this chip as bad (Running extremely hot while Raspberry looks dead). The chip itself is scratched and protected from reading model ...
TekuSP's user avatar
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1 vote
0 answers
65 views

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 ...
Liebmann5's user avatar
1 vote
0 answers
39 views

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 ...
Lakmal Premaratne's user avatar
-2 votes
1 answer
168 views

Why does Raspberry Pi 400 use white color (and not black) for its USB 2.0 port?

On a quick look up, it seems the general trend is white for USB 1.0 and black for USB 2.0. I also glanced through the USB 2.0 specification to try find anything relevant but it seems a bit ...
ritiek's user avatar
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What is this component on the Raspberry Pi 4 Model B?

Can anybody identify the chip in this section of the board? My RPi won't boot and this chip is scorching hot (over 80° according to a temp probe). I'm guessing this chip is busted. I've replaced SMDs ...
Dave Irvine's user avatar
2 votes
1 answer
488 views

Question concerning the display (ribbon cable) port on the board

I had an idea for a raspberry pi project, but i need some more info first. I looked a bit but i didn't see anything about it, what connector type does the display (ribbon cable) connector use, and ...
TheUser's user avatar
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1 vote
0 answers
78 views

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 ...
johnnyb's user avatar
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1 vote
1 answer
4k views

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 ...
Levi Ackerman's user avatar
1 vote
2 answers
223 views

How do I fix the usb-c port cracking on my pi 4?

Today I inspected my raspberry pi (4B, 4 GB ram) to see if any cables were disconnected, as my new Viewsonic monitor kept restarting for some reason, and I saw this: It looks as if the USB-C port in ...
User 23415's user avatar

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