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Raspiberry Pi Zero 2, help with getting LCD working

Hey everyone, I'm looking for some help with a project I'm working on, as I'm too far out of my element, and non of my research has produced any working configs, and I've been down far to many rabbit holes with chatgpt trying to figure it out.

I've got a Pi zero 2, running bookworm headless

I purchaed the following screen -
https://www.amazon.com/dp/B08LZG5G19?ref=ppx\_yo2ov\_dt\_b\_fed\_asin\_noscript

Went back the mfg page here -
https://www.waveshare.com/2.8inch-dpi-lcd.htm

Following the install on their wiki - https://www.waveshare.com/wiki/2.8inch\_DPI\_LCD


What I end up having is a yellowish screen, you can faintly see text, and I have black lines bouncing around the screen. I think I can get the rest of the project working myself, however this one has me stuck.

Anyone have any idea what's going on and might be able to help?

Thanks in advance!!!

https://preview.redd.it/pqhlc3sg5m9g1.jpg?width=4590&format=pjpg&auto=webp&s=dffbfbe1e7a803ea4e3154bf599a153d0f855780





https://redd.it/1pwf2xu
@r_raspberry_pi
What cool projects could I do with old raspberry pis?

So while I'm awaiting the arrival of my new Raspberry pi 5 today I plan to use as a Python work computer, I wanted to know what projects I could do with a Raspberry pi zero w 1.1? I got given it by a friend who didn't know what to do with it, and I'm hoping to see what other people have tried with it? I tried to install Raspberry Pi lite os on it, but I've not tried to SSH into it yet. I'm unsure if lite is the right choice of os for such an under-powered device?

I also have an OG Raspberry pi model B (My first computer when I was a kid!) and I'm hoping to go get it from my mum's house and collect a small army of pis to take over the world... erm make a little server rack for a home lab running dockers. I really hope these two old pis aren't dead and they're the little Pis that could!

https://redd.it/1pwshis
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best way to adapt pi 3 power into usb c?
https://redd.it/1px1rvn
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Is a raspberry pi a realistic option for me?

I'm a mechanic, I need a PC that takes up very little real estate on my toolbox. Literally all I need to do is stream music, play YouTube videos, and run several chrome tabs simultaneously.

But I want it to look cool, I'm big on aesthetics. The tiny little pi cases with rgb fans are very appealing for these reasons.

I have an overclocked pi 4 that does ok with browsing but it struggles with stuff like streaming videos a bit. I've been out of thr pi game for a few years. Is the pi 5 better? Or should I just build an ITX?

https://redd.it/1px328c
@r_raspberry_pi
How to disable initial configuration screens

I am trying to configure a raspberry pi zero w in gadget mode, so that I can ssh to it from my laptop. However, this is failing, despite me following the instructions scrupulously. After connecting it to a monitor, it appears to be coming up in a mode that requires me to perform an initial configuration via the keyboard/monitor/mouse. Is there any way I can tweak the configuration on the boot SD card so that it goes directly to the 'normal' run state?

https://redd.it/1px5agp
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I can't get Ethernet to work on my RasPi 4

I've been battling this issue for 2-days now and I'm at my wits end.

So I bought a Raspberry Pi 4b for the purpose of setting up Pi Hole on my local network. I set up a static IP for my ethernet connection, netmask /24, gateway & DNS set to 192.168.1.1 (modem), then I added the RasPi IP to the DHCP Reserved list on the modem. I wanted to have it set up so I can remote into it either via SSH or VNC because the RasPi is basically sitting right next to the modem so I can't plug a monitor in and control it manually. Both SSH & VNC are enabled on the RasPi and I can confirm they work because I was able to remote into my RasPi through WiFi, but I can't do it via ethernet. I pinged it from my PC (Windows 10) and I'm getting "Destination host unreachable". I tried running "arp -a" on my PC and the RasPi ethernet IP is not listed. Only the WiFi is listed among some other unrelated stuff. The left LED for ethernet is (mostly)solid green but the right one is solid orange.

Now, I tried connecting the RasPi using the ethernet cable from my PC and I have internet access but I don't know if SSH would work because I can't test it while my PC is disconnected. I asked ChatGPT and it's suggesting I buy a new cable because the shielding may be interfering. What do you think?

My cable specs:
S/FTP CAT6A STRANDED 26AWG 4P LSOH IEC 60332.3 PATCH ISO/IEC 11801 AND ANSI/TIA-568-C.2 DELTA VERIFIED

Thank you for your time

https://redd.it/1px976g
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MIDI is unusable after upgrading Pi 500 to Trixie

I recently flashed my SD card cold to Trixie, reinstalling everything on my Raspberry Pi 500, after seeing that Bookworm had that clock problem in the 2030s. However, I noticed now that playing MIDI files don't work in VLC or Kodi, MIDI synth doesn't work at all in Dosbox (using mixer /listmidi shows NO MIDI devices at all), and literally the only place where MIDI of any sort seems to work is in ScummVM (the old Monkey Island games have their MIDI music, presumably from ScummVM's MIDI synthesizer?)

What is going on? I tried installing fluidsynth, and not only did this not fix anything, it actually turned my Pi 500 completely silent (no sound, MIDI or otherwise, worked period). I had to uninstall fluidsynth to get the Pi's sound working again, thankfully, but the MIDI problem remains.

How can I resolve this without making anything worse? Thanks.

https://redd.it/1pxl5dw
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Cost now for a Raspberry Pi that can function as a print server for a usb printer?

i saw that the pi zero 2 w alone, no case, is $30 on amazon, not sure if there's any cheaper way to get it. am open to alternatives as I have zero investment in the RPI ecosystem. I do have an SD card, ethernet, don't have soldering capability and not really willing to desolder RAM chips but

The print server needs to serve Mac, Windows, Linux, iPhone and iPad. The amount of people using it is small. CUPS will work for the first three, no idea what to do for the last

https://redd.it/1pyeu9b
@r_raspberry_pi
Raspberry Pi as an assisted listening device for hearing-impaired people

My father is extremely hearing-impaired. Currently he has a personal sound amplifier that I got him that works very well, but those devices are extremely annoying for the non-hearing impaired around him. The headphones are wired, and any movement out of place will make the device start squealing in the most high-pitched cringe inducing fingernails on chalkboard sound you will ever hear if your life, and my poor dad has no idea that sound is emanating from that device.

I had an idea of converting a raspberry-pi into something like this, but with the built-in bluetooth it would enable the use of wireless high quality headphones. When researching this I stumbled upon this article from India which just released this month: https://www.ijprems.com/uploadedfiles/paper//issue12december2025/45259/final/finijprems1764914693.pdf

As someone who has never worked on Raspberry Pi before, how difficult of a project does this seem to a complete newbie on the platform? I am pretty comfortable with Python and the article states the libraries they used, so that may not be too difficult for me. Any recommendations on the peripherals I should use?

https://redd.it/1pyqt2u
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SOLVED Raspberry Pi 5 "Red light then 9 Green Flashes" - Dead board? Nope. (Rev 1.1 / 4GB Issue)

Hey everyone,

I'm a total newbie to Raspberry Pis and I just went through absolute hell trying to get three new Raspberry Pi 5s (4GB + 8GB versions) working. I thought I’d share the fix here because I couldn't find anything specific to this online. For me I couldn't return them, I bought them locally and they said they can't do anything.



The Problem

When I plugged in power, I got a red light for a tiny second, then 9 Green Flashes, and then it would just loop. No video output.

I bought 3 units from different sellers, and all of them did this. My older Pi 5s (8GB) worked fine with the exact same power supply and SD cards.



The Diagnosis

I used Gemini to help me troubleshoot (shoutout to AI!), and figured out it wasn't a hardware failure.

The "9 flashes" code usually means "SDRAM pattern mismatch."

It turns out I have a newer Revision 1.1 board (you can check this with cat /proc/cpuinfo if you can get it to boot).

The "Latest" bootloader firmware (late 2024/2025) apparently has a bug/regression that hates the memory chips on these specific Rev 1.1 boards. It tries to run the RAM too aggressively and fails (that's what AI told me, not sure what it means exactly)



The Fix (Step-by-Step)

I basically had to force the Pi to use an older, "safer" brain.



1. Downgrade the Bootloader:

I had to manually flash the April 2024 bootloader recovery image.

File I used: rpi-boot-eeprom-recovery-2024-04-20-2712-sd.img

I flashed this to an SD card using "Use Custom" in the Imager, put it in the broken Pi, and waited for the green screen + steady green LED.



2. Stop the OS from "Fixing" It (Critical!):

This was the tricky part. As soon as I booted Raspberry Pi OS (Bookworm), it would secretly download the "latest" (broken) firmware and install it on the next reboot, causing the 9 flashes loop again.

To stop this, I opened the terminal immediately after booting and ran: sudo apt-mark hold rpi-eeprom sudo apt-get remove rpi-eeprom -y

I also deleted any pending .upd files in /boot/firmware/ just to be safe.



3. Verification:

I ran stress-ng (memory stress test) for 5 minutes.

Passed perfectly. Temps are cool (34°C idle). The RAM isn't broken, it just needed the older timings!



Question for the Experts

Since I'm new to this: Is there anything else I should be careful of? I've locked the rpi-eeprom package so it won't update. Am I missing out on anything major (security/features) by staying on the April 2024 bootloader forever?



TL;DR: If your new Pi 5 flashes green 9 times, it might just need the April 2024 bootloader. Don't return it yet!

https://redd.it/1pyypkj
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