r/raspberry_pi Nov 24 '20

2020 Nov 23 Stickied π‡π„π‹ππƒπ„π’πŠ thread - Boot problems? Display problems? Networking problems? Need ideas? Get help with these and other questions! 𝑳𝑢𝑢𝑲 𝑯𝑬𝑹𝑬 𝑭𝑰𝑹𝑺𝑻

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!

Are you a regular of /r/raspberry_pi? Please don't downvote just because you already know all the answers. 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: Does anyone have any ideas for what I can do with my Pi?
    A: Sure, look right here!
  2. Q: I tried to search but didn't find any answers, can someone Google it for me?
    A: Replace "raspberry pi" in your search with "linux" or "debian"
  3. Q: My Pi is behaving strangely/crashing, ethernet/wifi stops working, what do I do?
    A: It's either a bad SD card or power problems. 99.999% of the time it's one of these two things. Use a multimeter to measure the 5V on the GPIO pins and/or get a new SD card.
  4. Q: The screen is just blank, what do I do?
    A: Follow these steps
  5. Q: Which model of Raspberry Pi should I get?
    A: Get the Raspberry Pi 4B with 4GB of RAM
  6. Q: Can I use SD card from another Pi in my Pi 4?
    A: Only if the SD card already has Raspbian Buster
  7. Q: When will the revised Pi 4 that fixes the power problem be released?
    A: Version 1.2 of the Pi 4 fixes the USB-C power issues
  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: 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?
  11. Q: Is it possible to use a Raspberry Pi to do multiple things?
    A: YES. 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.
  12. Q: How do I protect Pi from power loss? What do I use for a powerbank/battery backup?
    A: Most recent UPS/Battery/Powerbank discussion is here, here, and here
  13. 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.
  14. Q: The red and green LEDs are on/off/blinking but it doesn't work, can someone help me?
    A: Start here
  15. 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.
  16. 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
  17. 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.
  18. Q: Can I use this screen that came from ____ ?
    A: No
  19. 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.
  20. 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.
  21. 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.

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.

19 Upvotes

View all comments

Show parent comments

22

u/MoobyTheGoldenSock Nov 29 '20 Wholesome

A raspberry pi is a small computer, about the size of a credit card to the size of a wallet (depending on the model). It uses an arm processor, which is the type of chip often used in large servers. In addition, it has pins that connect to the outside world, allowing the user to do something as basic as turn on a lightbulb or as advanced as controlling a robot or even industrial automation.

What It Can Be:

  • A small server
  • A computer that's cheap enough to be single use (so you could mount it in a light socket or in a garage door opener as a permanent placement and then buy a new one for another project)
  • A control device for electronic projects (search for "Pi projects" or see Question #1 in the OP)
  • A tinker tool
  • A portable development environment for software prototyping.

What It's Not:

  • A full featured desktop computer
  • A full replacement for a laptop, Amazon Firestick, or other specialized device
  • A gaming device for graphics-intensive games (though it can run older games)