Automation, sensing and robotics • Re: Submerge temp sensors failing,
Just reread,you are using HomeAssistant, scrap your current method.Grab some ESP32s (just the basics Wroom originals) and use ESPHome. It'll all be integrated together.(This is the setup I moved my...
View ArticleRaspberry Pi OS • add-apt-repository does not work
I installed Raspberry Pi OS Lite 64bit .on my Raspberry Pi 4B. I wanted to add a repository and installed the package 'software-properties-common'. But using the command I got the following...
View ArticleGeneral • C++ std::string memory footprint
Just wanted to share that using std::string is rather expensive if like me your memory budget is really tight when running btstack, tinyusb, lwip and using a large frame buffer on a Pico W.Turns out...
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Other RP2040 boards • New blinkenlights board using RP2040
I thought I would do a little write up on my mostly successful first attempt at programming using the RP2040. https://rodyne.com/?p=1751Short version was I made a 2U panel sized PCB a month ago using...
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Troubleshooting • Re: Pi 5 low voltage warning behavior
Isn't it strange how these sort of power problems seem to be much less common when people use the excellent and cheap raspberry PI power supply. You could almost believe that RPI have put a lot of...
View ArticleRaspberry Pi OS • Re: cannot boot, As I am using 1TB microSD is size the...
At, below is ok run these two commands in Ubuntu Studio 22.04.1 VMware VM with testing microSD card connected? Only these two are ok?https://fight-flash-fraud.readthedocs.i ... ction.htmlQuick...
View ArticleGeneral discussion • Re: Compute Modules
What are compute modules? Are they extensions to each Raspberry Pi, or souped up versions of the Raspberry Pi?https://www.raspberrypi.com/products/compute-module-5/I had seen them on that page, hence...
View ArticleGeneral discussion • Re: How much ram is in my Raspberry Pi 4 B?
It's a Samsung K4FBE3D4 https://semiconductor.samsung.com/dram/ ... d4hm-tfcl/This is a 32Gb part so your Pi4 has 4GB of RAM.Statistics: Posted by sparkyhall — Mon Jan 27, 2025 10:23 am
View ArticleGeneral discussion • Re: Is Raspberry Pi Branded SD card available on Amazon?
Yes, I've done that in the past.I was more thinking of if we came across something out there in the wild that looks dodgy; it might encourage people to pass info onwards rather than posting on a...
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Beginners • Re: Powering 1.4A Device from Raspberry Pi 5 USB A Port
The power supply is sufficient—it can provide 30W at 5V, so 6A. I intentionally over-dimensioned the entire setup to accommodate a future upgrade, particularly for a more powerful version of the...
View ArticleCompute Module • brcmfmac kernel crash - dead000000000122
I'm able to reproduce an issue where something in brcmfmac crashes. This is the output. Anyone else noticed something similar?Code: Stopping D-Bus System Message Bus...[ OK ] Stopped D-Bus System...
View ArticleGeneral discussion • Re: Wll we get a better replacement option for desktop...
Use timeshift for system backups.deja-dup, pika backup, rsync, etc for backing up your /home data.I have used my pi400 as my desktop computer since 2021, I have had very few problems.Same...
View ArticleGraphics, sound and multimedia • Re: Autostart VLC player issues
Are you running that python in a "virtual environment" or not?(I assume the Pi5 is running Bookworm 64-bit)There does not seem to be any error handling (try:) when opening the .jpg or .mp4, so maybe a...
View ArticleTroubleshooting • Re: Weather station catastrophe (Pi Zero 2W, MH-Z19B,...
have you soldered the GPIO40 header?Post a picture of your setup, provide details on the LCD.The CO2 sensor indeed claims to have a 3.3V level UART, so that should be fine.Where did you connect BME280...
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General discussion • Re: New "Ethernet-Transceiver"-Chip on the...
The following images are from @leepspvideo:Thanks! Do not trust any readings from those thermal images; whoever took them doesn't know how to use a thermal camera.The short version: different surfaces...
View ArticleTroubleshooting • Re: Raspberry Pi 4 Model B (2 GB) Ethernet Port Issue –...
Are your cables going all the way in to the click-lock stage? A couple of my Pi4's need a bit of manipulation and force to get them all the way in.Have you done a good inspection of the ethernet...
View ArticleAutomation, sensing and robotics • Re: How to Control SMC PVQ13 Proportional...
Perhaps have a look at "controllable current sink".Example - https://electronics.stackexchange.com/q ... rrent-sink- https://www.ti.com/lit/an/snoaa46/snoaa46.pdfThe control voltage will be provided...
View ArticleC/C++ • Re: Modify the rpicam-apps, use OpenCV function, fail to show RED color
I wonder if the conversion back to YUV is creating a new buffer, but I don't really know. My instinct would be to simplify what you've got so that you can figure out what's happening. I would forget...
View ArticleBeginners • Re: Is my RPi Zero 2w *dead*??
My Pi Zero 2 does nothing unless a card is plugged in. No LED or anything else.That's to be expected, the diagnostic screen only appears on series 4+ models.Statistics: Posted by wildfire — Tue Jan...
View ArticleBeginners • Making all GPIO pins use pull up resistors permantly
I want to have all my GPIO pins use pull up resistors so that the will react to them being pulled to 3.3V when a switched attached to them is closed.I know pins 1-8 are wired as pull down while the...
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