Python • Generic i2c bus problem
Good morning, I am having problems using an OLED 1306 through the I2C bus. I have the same configuration on two Raspberry 5s, one 4GB and one 8GB. On the 8GB, after installing the python3-luma.oled...
View ArticleTroubleshooting • Official hdmi-hdmi micro cable stopped working
This happened all of a sudden, so I am a bit perplexed right now:Years ago I bought a pi400 kit, with the official hdmi cable included. It worked wonders both on the pi400 and the pi5. Till 2 days...
View ArticleCompute Module • CM4S PWM1_X
I have read that GP40-41 are not connected to PWM1_{0,1} on the CM4. Is this also the case for the CM4S ?Statistics: Posted by wcl55 — Fri Jul 25, 2025 11:06 am — Replies 4 — Views 57
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Compute Module • [CM5] Clarifying PMIC_EN vs PWR_BUT Usage for Power Control...
Datasheet says2.16. PMIC_ENPulling this pin low puts the CM5 in the lowest possible power-down state. TIPIt is recommended to only pull this pin low once the OS has shut down.2.17. PWR_BUTPulling...
View ArticleTroubleshooting • No HDMI from Pi 4B
As subject says. No HDMI on boot from brand new Pi 4B 4GB, Official RPi power brick, Sandisk 32 GB micro SD and new micro HDMI to HDMI cable to ASUS ProArt 27 inch monitor.Here are the steps I've...
View ArticlePython • LCD 1602A Scrolling Messages with a HW Start/Stop Interrupt
Greetings,I hope you are doing well! I am not a newbie to Raspberry Pi s, I used them in many of our systems and I did the HW integration, but I am new to Python and just started to learn. I am...
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Python • Scheduled task doesnt run
Hello, I am relatively new to python. I am using systemd to run a python script i have called scheduler.py. If a switch status is set to 1 then a second script relay_test6.py should run using...
View ArticleOther RP2040 boards • Custom RP2350 Board Issues
I made a custom RP2350B test board before I include RP2350 on production boards.I followed the [url]hardware design guide[/https://datasheets.raspberrypi.com/rp23 ... rp2350.pdf] quite closely- it's a...
View ArticleHATs and other add-ons • Matrix Creator install problem
I saw a demo video for a sound camera using a Pi and Matrix Creator hat and wanted to give it a go myself. I found one for sale and purchased it but I'm unable to do the install as directed on the...
View ArticleOff topic discussion • Trixie to make 64 bit time_t for everything
https://www.theregister.com/2025/07/25/ ... ug_debian/Venerable Linux distribution Debian is side-stepping the Y2K38 bug – also known as the Unix Epochalypse – by switching to 64-bit time for...
View ArticleFor sale • RPi4b & 3b for sale
Hiyall,RPi4b, 4Gb RAM is enclosed in metal heatsink and has 64Gb SD card and psu.RPi3b 2Gb RAM has standard enclosure+16Gb SD card and psu.Also camera ribbon and touch screen viewer.All together $100....
View ArticleRaspberry Pi OS • can I get "sudo dmesg -T" read from any file?
Hello,I have a loki and grafana setup. I want promtail push output of "sudo dmesg -T" to my loki server.But I am not able to figure out which file have the output of "sudo dmesg -T" stored?Any...
View ArticleTroubleshooting • PI5 USB Boot // Sticky disk ?
Hi there,My RaspiOS Lite is running fine from my USB disk for years... long story short, I want to make a fresh install from a new disk... and I'm struggling to get it boot.- New USB disk : no boot-...
View ArticleCompute Module • Auto‐restart CM after shutdown (Halt state)
I’m working with a Compute Module (CM4 and CM5) and I’d like it to automatically power back on whenever it enters the "Halt" state (e.g. after running sudo shutdown now), without removing and...
View ArticleNetworking and servers • VPN bridge on a single NIC - Raspberry Pi 5 &...
Hey everyone,I’m working on a VPN bridge project on my Raspberry Pi 5 (fresh Raspberry Pi OS Lite install) and could really use some brainpower from this community.▶Current Network Setup:⁃Device:...
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General • PSRAM with RP2350B
Hi everyone,I'm struggling to find a right and reliable way to use an external PSRAM with RP2350B boards.Here are the 2 boards I have: * Pimoroni PGA2350 * WeAct RP2350B Core Board (with an additional...
View ArticleTroubleshooting • Latest Octoprint + LCD Waveshare 3.5(A) + Octroscreen + RPI...
I'm having a very similar problem to the one described here: viewtopic.php?t=382506. Specifically, I can't properly configure and run LCD WAVESHARE 3.5(A) with a Raspberry Pi 3b+ and the latest OctoPi...
View ArticleTroubleshooting • RPi4B reduced memory
Hi,I have an RPi4B that is reporting (/proc/meminfo) only 758kB instead of 4GB. I'm guessing the RAM IC has developed a fault. Is there any memory test facility or debug output that can confirm this...
View ArticleTroubleshooting • linux-image-6.6.62+rpt-rpi-2712 does not make an automated...
Since June 2025 the default kernel for the raspberry pi 5 is 6.12.x.Normally I would expect that after the command "sudo apt update" and "sudo apt full upgrade", the upgrade to 6.12 is taking place...
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HATs and other add-ons • Waveshare 8 (A) inch 1200x800 MIPI dtoverlay...
There's various 8 inch displays made from Waveshare, I got a 1200x800, with only the DSI-MIPI connector, and +5v input.On the wiki, there are various dtoverlays suggested.I tried many, and finally I...
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