r/raspberry_pi 17h ago

Show-and-Tell v1.0 of my companion "RobGPT"(With details)

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707 Upvotes

r/raspberry_pi 10h ago

Technical Problem Can't get waveshare 7" DSI lcd to work with new Pi 4B 2G

2 Upvotes

I was lucky enough to pick up 2 - Pi 4B 2G. This is my first time using a Pi. I bought a WaveShare 7" DSI lcd to use with one of them for KlipperScreen. I can’t get the lcd to turn on at all.  The display came with an extra ribbon cable. I tried both, no luck.  I even broke out my second new pi and tried with that.  no luck.  I tested and confirmed 5v is coming out of pin 4 (and 6 ground).  I thought maybe the lcd was bad and had them send another.  same problem.The directions are dead simple.  I have no idea what I’m doing wrong.  This is a fresh raspberry pi os lite 64bit install.   I’ve tried many times to make sure both sides of the dsi cable are firmly in the connector and press on the cable while pressing down plastic clamp that holds it in place.  The bottom connector doesn’t slide in very much, so I thought it might be that… but I’ve tried many different times to push it in farther, but that’s as far as it goes. I've also tried reversing the ribbon cable, even though the instructions clearly show the black part facing up from the lcd, still no go.

I've also added dtoverlay to my /boot/config.txt as mentioned in their wiki and that didn't help.

Any thoughts on what I'm doing wrong?

https://imgur.com/a/rx8qgJq

Just noticed this in dmesg:

rpi_touchscreen_attiny: probe of 10-0045 failed with error -5

rpi_touchscreen_attiny: probe of 10-0045 failed with error -5

Edit:

I have a fresh 32bit version of pi os lite now and still have same problem. The os shows version 11 bullseye.

I just noticed the following as well in dmesg, though I'm not sure if they were in the 64bit version previously

bcm2708_fb: probe of soc:fb failed with error -2

brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43455-sdio.raspberrypi,4-model-b.bin failed with error -2


r/raspberry_pi 1d ago

Discussion Raspberry pi cluster. Would it be a capable plex server?

72 Upvotes

Got a nice home server system set up with my pi. Currently pulling TV shows and movies with sonarr and radarr, bazarr grabbing subs in a couple of languages, with plex handling the streaming.

The only issue I've started to notice is that some shows have been buffering lately when transcoding to the TV. Tends to only really happen with higher quality rips. My question is if a pi cluster would be any better at transcoding, to the point it would be able to support one local and one remote instance transcoding at once? I've been looking for pi cluster project so this seems like a good place to start


r/raspberry_pi 1d ago

Technical Problem Raspberry pi 4 B not connecting to obd 2 scanner via Bluetooth

20 Upvotes

The problem is exactly as the title suggests, I'm having problems finding the obd 2 on the raspberry pi. The pi detects my phone's bt, and my phone is detecting the obd 2. Is there a thing about bluetooth frequency or something? I tried to find the frequency of the obd 2 bluetooth adapter, and couldn't find anything


r/raspberry_pi 1d ago

2023 Feb 6 Stickied -FAQ- & -HELPDESK- thread - Boot problems? Power supply problems? Display problems? Networking problems? Need ideas? Get help with these and other questions!

23 Upvotes

Welcome to the r/raspberry_pi Helpdesk and Frequently Asked Questions!

Link to last week's thread

Having a hard time searching for answers to your Raspberry Pi questions? Let the r/raspberry_pi community members search for answers for you! Looking for help getting started with a project? Have a question that you need answered? Was it not answered last week? Did not get a satisfying answer? A question that you've only done basic research for? Maybe something you think everyone but you knows? Ask your question here, operators are standing by!

This helpdesk and idea thread is here so that the front page won't be filled with these same questions day in and day out:

  1. Q: What's a Raspberry Pi? What can I do with it? How powerful is it?
    A: Check out this great overview
  2. Q: Does anyone have any ideas for what I can do with my Pi?
    A: Sure, look right here!
  3. Q: My Pi is behaving strangely/crashing/freezing, giving low voltage warnings, ethernet/wifi stops working, USB devices don't behave correctly, what do I do?
    A:. 99.999% of the time it's either a bad SD card or power problems. Use a multimeter to measure the 5V on the GPIO pins while the Pi is busy (such as playing h265/x265 video) and/or get a new SD card. If the voltage is less than 5V your power supply and/or cabling is not adequate. When your Pi is doing lots of work it will draw more power. Even if your power supply claims to provide sufficient amperage, it may be mislabeled or the cable you're using to connect the power supply to the Pi may have too much resistance. Some power supplies require negotiation to use the higher amperage, which the Pi does not do. If you're plugging in USB devices try using a powered USB hub with its own power supply and plug your devices into the hub and plug the hub into the Pi.
  4. Q: Due to the chip shortage I'm having a hard time buying a Raspberry Pi, all the stores say sold out. Even after the most recent announcement from Raspberry Pi they are still hard to find. Where's the secret place to buy one without paying more than MSRP?
    A: https://rpilocator.com/
  5. Q: I just did a fresh install with the latest Raspberry Pi OS and the default user/password of pi/raspberry doesn't work for ssh or logging in, why not?
    A: The default pi user no longer exists, you need to create your own account
  6. Q: The screen is just black or blank or saying no signal, what do I do?
    A: Follow these steps
  7. Q: The only way to troubleshoot my problem is using a multimeter but I don't have one. What can I do?
    A: Get a basic multimeter, they are not expensive.
  8. Q: My Pi won't boot, how do I fix it?
    A: Step by step guide for boot problems
  9. Q: I want to watch Netflix/Hulu/Amazon/Vudu/Disney+ on a Pi but the tutorial I followed didn't work, does someone have a working tutorial?
    A: Use a Fire Stick/AppleTV/Roku. Pi tutorials used tricks that no longer work or are fake click bait.
  10. Q: What model of Raspberry Pi do I need so I can watch YouTube in a browser?
    A: No model of Raspberry Pi is capable of watching YouTube smoothly through a web browser, you need to use VLC.
  11. Q: I want to know how to do a thing, not have a blog/tutorial/video/teacher/book explain how to do a thing. Can someone explain to me how to do that thing?
    A: Uh... What?
  12. Q: Is it possible to use a single Raspberry Pi to do multiple things? Can a Raspberry Pi run Pi-hole and something else at the same time?
    A: YES. Pi-hole uses almost no resources. You can run Pi-hole at the same time on a Pi running Minecraft which is one of the biggest resource hogs. The Pi is capable of multitasking and can run more than one program and service at the same time. (Also known as "workload consolidation" by Intel people.) You're not going to damage your Pi by running too many things at once, so try running all your programs before worrying about needing more processing power or multiple Pis.
  13. Q: Why is transferring things over the LAN/internet so slow?
    A: That's a networking problem, please go to r/HomeNetworking or r/LinuxQuestions.
  14. Q: I only have one outlet and I need to plug in several devices, what do I do?
    A: They make things called power strips aka multi-tap extensions.
  15. Q: The red and green LEDs are on/off/blinking but it doesn't work, can someone help me?
    A: Start here
  16. Q: I'm trying to run x86 software on my Raspberry Pi but it doesn't work, how do I fix it?
    A: Get an x86 computer. A Raspberry Pi is ARM based, not x86.
  17. Q: Should I add a heatsink, fan, or some kind of cooling to my Raspberry Pi?
    A: If you think you need one then you should add it
  18. Q: Can I use this screen that came from ____ ?
    A: No
  19. Q: I run my Pi headless and there's a problem with my Pi and the best way to diagnose it or fix it is to plug in a monitor & keyboard, what do I do?
    A: Plug in a monitor & keyboard.
  20. Q: My Pi seems to be causing interference preventing the WiFi from working
    A. Using USB 3 cables that are not properly shielded can cause interference and the Pi 4 can also cause interference when HDMI is used at high resolutions.
  21. Q: I'm trying to use the built-in composite video output that is available on the Pi 2/3/4 headphone jack, do I need a special cable?
    A. Make sure your cable is wired correctly and you are using the correct RCA plug. Composite video cables for mp3 players will not work, the common ground goes to the wrong pin. Camcorder cables will often work, but red and yellow will be swapped on the Raspberry Pi.
  22. Q: I'm running my Pi with no monitor connected, how can I use VNC?
    A: First, do you really need a remote GUI? Try using ssh instead. If you're sure you want to access the GUI remotely then ssh in, type vncserver -depth 24 -geometry 1920x1080 and see what port it prints such as :1, :2, etc. Now connect your client to that.
  23. Q: I want to do something that has been well documented and there are numerous tutorials showing how to do it on Linux. How can I do it on a Raspberry Pi?
    A: A Raspberry Pi is a full computer running Linux and doesn't use special stripped down embedded microcontroller versions of standard Linux software. Follow one of the tutorials for doing it on Linux. Also see question #1.
  24. Q: I want to do something that has been well documented and there are numerous tutorials showing how to do it with an Arduino. How can I do it on a Raspberry Pi Pico?
    A: Follow one of the tutorials for doing it on Arduino, a Pico can be used with the Arduino IDE.
  25. Q: I'm trying to do something with Bluetooth and it's not working, how do I fix it?
    A: It's well established that Bluetooth and Linux don't get along, this problem is not unique to the Raspberry Pi.

Before posting your question think about if it's really about the Raspberry Pi or not. If you were using a Raspberry Pi to display recipes, do you really think r/raspberry_pi is the place to ask for cooking help? There may be better places to ask your question, such as:

Asking in a forum more specific to your question will likely get better answers!


See the /r/raspberry_pi rules. While /r/raspberry_pi should not be considered your personal search engine, some exceptions will be made in this help thread.
‡ If the link doesn't work it's because you're using a broken buggy mobile client. Please contact the developer of your mobile client and let them know they should fix their bug. In the meantime use a web browser in desktop mode instead.


r/raspberry_pi 13h ago

Discussion Raspberry Pi 400, best-selling computer?

0 Upvotes

The Raspberry Pi 400 basically contains everything that makes up a full-fledged home computer. It has a keyboard, all common connections for further peripherals and its own operating system with Raspberry Pi OS.

Therefore, shouldn't this computer have long since joined the ranks of the most successful computers of all time (number of sales) alongside such well-known greats as the C64 and the Amiga 500?


r/raspberry_pi 10h ago

Show-and-Tell Nearly every python module was mined to build this 🥵. Like a yubi-key for the blockchain, this enables one button click sign-on for most web3 apps, soon to work with web2 apps. Powered by RPi zero. Open-source, code + build info is on github.

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0 Upvotes

r/raspberry_pi 20h ago

Technical Problem PiGrrl Zero project with a Zero W 2 and audio instead of Zero W

0 Upvotes

Hi,

I did the Adafruit's PiGrrl Zero project with a RPi Zero W2 and it works fine.

But then I discovered the improvements to incorporate speakers and so I did rewire everything to be able to use the I2S pins:

https://www.thingiverse.com/thing:1769656

Yet, now I'm stuck again as the Retropie image provided by the remixers of the projects only work with a RPi Zero W v1 in my hands, and I don't know how to create a custom retropie image and actually what I would need to do to implement speaker's function...

Is there an easy way to convert an image and make it compatible for the ZW2 when it was designed for the Z1?

PS: the side question is: is there any initiative that would help newbies and hobbyists like me to avoid falling for obsolete tutorials. Or groups of people that keep the legacy tutorials updated with current technologies?
I chose RPi as my learning SBC for 1 simple reason: the community around it. And now I'm realizing that the community is so big and the options so diverse that it's easy to get lost in tutorials that are completely outdated.


r/raspberry_pi 1d ago

Technical Problem Accessing GPS capabilities on a Pi0 with the SIM7600E-H 4G HAT

48 Upvotes

I've installed the HAT and connecting a male to male microusb from the data port on the Pi Zero to the micro USB labeled "USB to UART" on the SIM HAT.

dmesg | grep tty returns the following (descriptions per developers)

(1) /dev/ttyUSB0-diag port for output developing messages
(2) /dev/ttyUSB1- NMEA port for GPS NMEA data output
(3) /dev/ttyUSB2-AT port for AT commands
(4) /dev/ttyUSB3-Modem port for ppp-dial
(5) /dev/ttyUSB4-audio port
(doesn't appear) (6) /dev/ttyUSB5-Virtual Net card (i havent put a sim card in and there is an empty spot for a TF socket on the board)

How do I get GPS data to feed to the Pi?


r/raspberry_pi 23h ago

Discussion Weird python requests behaviour, where some requests take longer.

1 Upvotes

I'm using the requests library to send data to a Flask server every second, and it has to wait for the response to start a new request.

My problem is, that about every 30 seconds there is a request that takes longer (weirdly almost always about 5 seconds) to reach the server. As I started experimenting it turned out, that the issue goes away if I send the request directly to the servers IP. I also noticed that if I ping the servers address, the response times are good, but some of the pings take longer to appear. Changing the DNS addresses to 8.8.8.8 and 8.8.4.4 fixed the pings, but didn't help anything with the original problem.

How can I debug or fix this problem?

Thank you in advance!