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
@r_raspberry_pi
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
@r_raspberry_pi
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
@r_raspberry_pi
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
@r_raspberry_pi
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Built a smart VOC filter that tells you when it’s actually dead
https://redd.it/1pyu7mi
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https://redd.it/1pyu7mi
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From the raspberry_pi community on Reddit: Built a smart VOC filter that tells you when it’s actually dead
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Does a Pico USB-C powered by VSYS, can sustain power if the VSYS gives 5 volts and from the usb ports 100millvolts (so between the 4.75-5.25V range)
Hello, this is my first time really using pico's, I'm trying to jailbreak an old ipad mini using checkm8-a5, and how its supposed to be done, is that with a microusb pico, you would plug in a 2 in 1 splitter, so the pico could get power and data. I have a usb-c pico and this sorta cable doesn't exist as it doesn't comply with the usb-c standard, so my idea was to plug in a battery into the VSYS for power (I have soldered pin headers already), and then just plug in a usb-c to lighting to jailbreak the ipad, but I heard that if I plug in this cable, the ipad even powered off/DFU mode, will still transmit power (read about 100mv, not that sure tho) without disconnecting the 5v line manually (which i dont know how honestly) It can fry the pico which would be not nice™️. If anybody could help me understand this situation better will be greatly appreciated.
https://redd.it/1pyj81h
@r_raspberry_pi
Hello, this is my first time really using pico's, I'm trying to jailbreak an old ipad mini using checkm8-a5, and how its supposed to be done, is that with a microusb pico, you would plug in a 2 in 1 splitter, so the pico could get power and data. I have a usb-c pico and this sorta cable doesn't exist as it doesn't comply with the usb-c standard, so my idea was to plug in a battery into the VSYS for power (I have soldered pin headers already), and then just plug in a usb-c to lighting to jailbreak the ipad, but I heard that if I plug in this cable, the ipad even powered off/DFU mode, will still transmit power (read about 100mv, not that sure tho) without disconnecting the 5v line manually (which i dont know how honestly) It can fry the pico which would be not nice™️. If anybody could help me understand this situation better will be greatly appreciated.
https://redd.it/1pyj81h
@r_raspberry_pi
Reddit
From the raspberry_pi community on Reddit
Explore this post and more from the raspberry_pi community
2025 Dec 29 Stickied -FAQ- & -HELPDESK- thread - Boot problems? Power supply problems? Display problems? Networking problems? Need ideas? Get help with these and other questions!
###[Welcome to the r/raspberry_pi Helpdesk and Frequently Asked Questions!](http://f2z.net/RPi-Helpdesk-FAQ.png)
[Link to last week's thread](/r/raspberry_pi/comments/1pv144i/2025_dec_25_stickied_faq_helpdesk_thread_new_pi/)
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 in the comments on this page,** 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](https://www.reddit.com/r/raspberry_pi/comments/jzubxl/2020_nov_23_stickied_𝐇𝐄𝐋𝐏𝐃𝐄𝐒𝐊_thread_boot/gdyq5qh/)
2. Q: Does anyone have any ideas for what I can do with my Pi?
A: [Sure, look right here!](https://old.reddit.com/r/raspberry_pi/search?q=flair%3Atutorial+OR+flair%3Ashow-and-tell&restrict_sr=on&sort=relevance&t=all)^(‡)
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 [USB power meter](https://www.amazon.com/s?k=usb+power+meter) or measure the 5V on the GPIO pins with a multimeter while the Pi is busy (such as playing h265/x265 video) and/or get a new SD card [1](https://www.reddit.com/r/raspberry_pi/comments/1g603oq/i_ran_through_150_benchmarks_on_the_new_raspberry/) [2](https://www.reddit.com/r/raspberry_pi/comments/xnkp71/reliability_of_microsd_endurance_cards_compared_w/) [3](https://elinux.org/RPi_SD_cards). 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, test with the `stress` and `stressberry` packages. Higher wattage power supplies achieve their rating by increasing voltage, but the Raspberry Pi operates strictly at 5V. 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. Phone chargers, designed primarily for charging batteries, may not maintain a constant wattage and their voltage may fluctuate, which can affect the Pi’s stability. [You can use a USB load tester](https://www.amazon.com/s?k=usb+load+tester) to test your power supply and cable. Some power supplies require negotiation to provide more than 500mA, 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: I'm trying to setup a Pi Zero 2W and it is extremely slow and/or keeps crashing, is there a fix?
A: Either you need to [increase the swap size](https://forums.raspberrypi.com/viewtopic.php?t=359240) or check question #3 above.
5. Q: Where can I buy a Raspberry Pi at a fair price? And which one should I get if I’m new? Should I get an x86 PC instead of a Pi?
A: Check stock and pricing at https://rpilocator.com/ — it tracks official resellers so you don’t overpay.
Every time the x86 PC vs. Pi question comes up the answer is **always** if you have to ask, get a PC. If you're sure want a Raspberry Pi but not sure which model:
* If you don’t know, get a Pi 5.
* If you can’t afford it, get a Pi 4.
* If you need tiny, get a Zero 2W.
* If you need lowest power, get the original Zero.
* For RAM, always get the most you can afford; you can’t upgrade it later.
That’s it. No secret chart,
###[Welcome to the r/raspberry_pi Helpdesk and Frequently Asked Questions!](http://f2z.net/RPi-Helpdesk-FAQ.png)
[Link to last week's thread](/r/raspberry_pi/comments/1pv144i/2025_dec_25_stickied_faq_helpdesk_thread_new_pi/)
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 in the comments on this page,** 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](https://www.reddit.com/r/raspberry_pi/comments/jzubxl/2020_nov_23_stickied_𝐇𝐄𝐋𝐏𝐃𝐄𝐒𝐊_thread_boot/gdyq5qh/)
2. Q: Does anyone have any ideas for what I can do with my Pi?
A: [Sure, look right here!](https://old.reddit.com/r/raspberry_pi/search?q=flair%3Atutorial+OR+flair%3Ashow-and-tell&restrict_sr=on&sort=relevance&t=all)^(‡)
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 [USB power meter](https://www.amazon.com/s?k=usb+power+meter) or measure the 5V on the GPIO pins with a multimeter while the Pi is busy (such as playing h265/x265 video) and/or get a new SD card [1](https://www.reddit.com/r/raspberry_pi/comments/1g603oq/i_ran_through_150_benchmarks_on_the_new_raspberry/) [2](https://www.reddit.com/r/raspberry_pi/comments/xnkp71/reliability_of_microsd_endurance_cards_compared_w/) [3](https://elinux.org/RPi_SD_cards). 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, test with the `stress` and `stressberry` packages. Higher wattage power supplies achieve their rating by increasing voltage, but the Raspberry Pi operates strictly at 5V. 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. Phone chargers, designed primarily for charging batteries, may not maintain a constant wattage and their voltage may fluctuate, which can affect the Pi’s stability. [You can use a USB load tester](https://www.amazon.com/s?k=usb+load+tester) to test your power supply and cable. Some power supplies require negotiation to provide more than 500mA, 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: I'm trying to setup a Pi Zero 2W and it is extremely slow and/or keeps crashing, is there a fix?
A: Either you need to [increase the swap size](https://forums.raspberrypi.com/viewtopic.php?t=359240) or check question #3 above.
5. Q: Where can I buy a Raspberry Pi at a fair price? And which one should I get if I’m new? Should I get an x86 PC instead of a Pi?
A: Check stock and pricing at https://rpilocator.com/ — it tracks official resellers so you don’t overpay.
Every time the x86 PC vs. Pi question comes up the answer is **always** if you have to ask, get a PC. If you're sure want a Raspberry Pi but not sure which model:
* If you don’t know, get a Pi 5.
* If you can’t afford it, get a Pi 4.
* If you need tiny, get a Zero 2W.
* If you need lowest power, get the original Zero.
* For RAM, always get the most you can afford; you can’t upgrade it later.
That’s it. No secret chart,
no hidden wisdom. Bigger number = more performance, higher cost, higher power draw.
Also please see the [Annual *What to Buy* Megathread](https://www.reddit.com/r/raspberry_pi/comments/1pbesop/annual_december_pi_purchase_megathread_what_will/)
6. Q: I just did a fresh install with the latest Raspberry Pi OS and I keep getting errors when trying to ssh in, what could be wrong?
A: There are only 4 things that could be the problem:
1. The ssh daemon isn't running
2. You're trying to ssh to the wrong host
3. [You're specifying the wrong username](https://www.raspberrypi.com/news/raspberry-pi-bullseye-update-april-2022/)
4. You're typing in the wrong password
7. Q: I'm trying to install packages with pip but I keep getting `error: externally-managed-environment`
A: This is not a problem unique to the Raspberry Pi. The best practice is to use a [Python venv](https://docs.python.org/3/tutorial/venv.html), however if you're sure you know what you're doing [there are two alternatives documented in this stack overflow answer](https://stackoverflow.com/questions/75608323/how-do-i-solve-error-externally-managed-environment-every-time-i-use-pip-3):
* `--break-system-packages`
* `sudo rm` a specific file as detailed in the stack overflow answer
8. 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.
9. Q: My Pi won't boot, how do I fix it?
A: [Step by step guide for boot problems](https://www.raspberrypi.org/forums/viewtopic.php?t=58151)
10. 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.
11. 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.](https://www.reddit.com/r/raspberry_pi/comments/kocdez/which_if_any_raspberry_pi_is_powerful_enough_to/)
12. 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?
13. 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.
14. Q: Why is transferring things to or from disks/SSDs/LAN/internet so slow?
A: [If you have a Pi 4 or 5 with SSD, please check this post on the Pi forums.](https://forums.raspberrypi.com/viewtopic.php?t=245931) Otherwise it's a networking problem and/or disk & filesystem problem, please go to r/HomeNetworking or r/LinuxQuestions.
15. Q: The red and green LEDs are solid/off/blinking or the screen is just black or blank or saying no signal, what do I do?
A: [Start here](https://www.raspberrypi.org/forums/viewtopic.php?t=58151)
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: How can I run a noscript at boot/cron or why isn't the noscript I'm trying to run at boot/cron working?
A: You must correctly [set the `PATH` and other environment variables](https://www.reddit.com/r/linux4noobs/comments/w7o4o3/someone_please_help_me_understand_what_path_is/) directly **in your noscript**. Neither the boot system or cron sets up the environment. Making changes to environment variables in files in /etc will not help.
18. Q: Can I use this
Also please see the [Annual *What to Buy* Megathread](https://www.reddit.com/r/raspberry_pi/comments/1pbesop/annual_december_pi_purchase_megathread_what_will/)
6. Q: I just did a fresh install with the latest Raspberry Pi OS and I keep getting errors when trying to ssh in, what could be wrong?
A: There are only 4 things that could be the problem:
1. The ssh daemon isn't running
2. You're trying to ssh to the wrong host
3. [You're specifying the wrong username](https://www.raspberrypi.com/news/raspberry-pi-bullseye-update-april-2022/)
4. You're typing in the wrong password
7. Q: I'm trying to install packages with pip but I keep getting `error: externally-managed-environment`
A: This is not a problem unique to the Raspberry Pi. The best practice is to use a [Python venv](https://docs.python.org/3/tutorial/venv.html), however if you're sure you know what you're doing [there are two alternatives documented in this stack overflow answer](https://stackoverflow.com/questions/75608323/how-do-i-solve-error-externally-managed-environment-every-time-i-use-pip-3):
* `--break-system-packages`
* `sudo rm` a specific file as detailed in the stack overflow answer
8. 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.
9. Q: My Pi won't boot, how do I fix it?
A: [Step by step guide for boot problems](https://www.raspberrypi.org/forums/viewtopic.php?t=58151)
10. 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.
11. 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.](https://www.reddit.com/r/raspberry_pi/comments/kocdez/which_if_any_raspberry_pi_is_powerful_enough_to/)
12. 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?
13. 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.
14. Q: Why is transferring things to or from disks/SSDs/LAN/internet so slow?
A: [If you have a Pi 4 or 5 with SSD, please check this post on the Pi forums.](https://forums.raspberrypi.com/viewtopic.php?t=245931) Otherwise it's a networking problem and/or disk & filesystem problem, please go to r/HomeNetworking or r/LinuxQuestions.
15. Q: The red and green LEDs are solid/off/blinking or the screen is just black or blank or saying no signal, what do I do?
A: [Start here](https://www.raspberrypi.org/forums/viewtopic.php?t=58151)
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: How can I run a noscript at boot/cron or why isn't the noscript I'm trying to run at boot/cron working?
A: You must correctly [set the `PATH` and other environment variables](https://www.reddit.com/r/linux4noobs/comments/w7o4o3/someone_please_help_me_understand_what_path_is/) directly **in your noscript**. Neither the boot system or cron sets up the environment. Making changes to environment variables in files in /etc will not help.
18. Q: Can I use this
Reddit
From the raspberry_pi community on Reddit: Annual December Pi Purchase Megathread: What Will Make the Perfect Gift for My Dad/…
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screen that came from ____ ?
A: [No](https://www.reddit.com/r/raspberry_pi/comments/ebmtjl/2019_dec_16_stickied_𝐇𝐄𝐋𝐏𝐃𝐄𝐒𝐊_thread_do_you_need/fbdf9mo/)
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/Bluetooth from working
A. Using [USB 3 cables that are not properly shielded can cause interference](https://www.reddit.com/r/raspberry_pi/comments/gp3jhm/raspberry_pi_4s_usb_30_ports_are_causing/) and the [Pi 4 can also cause interference when HDMI is used at high resolutions](https://www.extremetech.com/computing/302815-raspberry-pi-4-wi-fi-fails-when-using-1440p-video-output).
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](https://www.reddit.com/r/raspberry_pi/comments/oo46ih/i_mapped_a_few_trrs_cables_to_the_rca_connectors/) 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 already has lots of tutorials. Do I need a Raspberry-Pi-specific guide?
A: Usually no.
* Raspberry Pi (Linux computer): Use any standard Linux tutorial. A Raspberry Pi runs a normal Linux OS, not a special cut-down version. See Question #1.
* Raspberry Pi Pico (microcontroller): Use Arduino tutorials. The Pico works with the Arduino IDE and can be used the same way as other Arduino-class boards.
24. Q: Which Operating System (OS) should I install?
A: If you aren’t sure, install Raspberry Pi OS. It’s the officially supported OS, it has the best documentation, the widest community support, and it’s what most guides and troubleshooting help assume you’re using.
25. Q: How can I power my Raspberry Pi from a battery?
A: All Raspberry Pi models run at 5 V. To choose a battery, first add up the maximum current of your Pi plus everything you attach to it (USB devices, screens, HATs, etc.). Then multiply that current by the number of hours you want it to run to get the required battery capacity in mAh. If you can’t find listed current values, [use a USB power meter](https://www.amazon.com/s?k=usb+power+meter) to measure the actual draw over 12–48 hours. Every battery question comes down to this simple math: the model, brand, or special setup doesn’t change the calculation.
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?](https://www.reddit.com/r/raspberry_pi/comments/d11ia1/raspberry_pi_in_kitchen_can_i_substitute/) **There may be better places to ask your question**, such as:
* /r/AskElectronics
* /r/AskProgramming
* /r/HomeNetworking
* /r/LearnPython
* /r/LinuxQuestions
* /r/RetroPie
* [The Official Raspberry Pi Forums](https://www.raspberrypi.org/forums/index.php)
Asking in a forum more specific to your question will likely *get better answers*!
Wondering which flair to use on your post? [See the Flair Guide](https://www.reddit.com/r/raspberry_pi/comments/1hqirky/flair_guide_how_to_choose_the_right_category_for/)
---
† [See the /r/raspberry\_pi rules.](https://old.reddit.com/r/raspberry_pi/about/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
A: [No](https://www.reddit.com/r/raspberry_pi/comments/ebmtjl/2019_dec_16_stickied_𝐇𝐄𝐋𝐏𝐃𝐄𝐒𝐊_thread_do_you_need/fbdf9mo/)
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/Bluetooth from working
A. Using [USB 3 cables that are not properly shielded can cause interference](https://www.reddit.com/r/raspberry_pi/comments/gp3jhm/raspberry_pi_4s_usb_30_ports_are_causing/) and the [Pi 4 can also cause interference when HDMI is used at high resolutions](https://www.extremetech.com/computing/302815-raspberry-pi-4-wi-fi-fails-when-using-1440p-video-output).
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](https://www.reddit.com/r/raspberry_pi/comments/oo46ih/i_mapped_a_few_trrs_cables_to_the_rca_connectors/) 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 already has lots of tutorials. Do I need a Raspberry-Pi-specific guide?
A: Usually no.
* Raspberry Pi (Linux computer): Use any standard Linux tutorial. A Raspberry Pi runs a normal Linux OS, not a special cut-down version. See Question #1.
* Raspberry Pi Pico (microcontroller): Use Arduino tutorials. The Pico works with the Arduino IDE and can be used the same way as other Arduino-class boards.
24. Q: Which Operating System (OS) should I install?
A: If you aren’t sure, install Raspberry Pi OS. It’s the officially supported OS, it has the best documentation, the widest community support, and it’s what most guides and troubleshooting help assume you’re using.
25. Q: How can I power my Raspberry Pi from a battery?
A: All Raspberry Pi models run at 5 V. To choose a battery, first add up the maximum current of your Pi plus everything you attach to it (USB devices, screens, HATs, etc.). Then multiply that current by the number of hours you want it to run to get the required battery capacity in mAh. If you can’t find listed current values, [use a USB power meter](https://www.amazon.com/s?k=usb+power+meter) to measure the actual draw over 12–48 hours. Every battery question comes down to this simple math: the model, brand, or special setup doesn’t change the calculation.
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?](https://www.reddit.com/r/raspberry_pi/comments/d11ia1/raspberry_pi_in_kitchen_can_i_substitute/) **There may be better places to ask your question**, such as:
* /r/AskElectronics
* /r/AskProgramming
* /r/HomeNetworking
* /r/LearnPython
* /r/LinuxQuestions
* /r/RetroPie
* [The Official Raspberry Pi Forums](https://www.raspberrypi.org/forums/index.php)
Asking in a forum more specific to your question will likely *get better answers*!
Wondering which flair to use on your post? [See the Flair Guide](https://www.reddit.com/r/raspberry_pi/comments/1hqirky/flair_guide_how_to_choose_the_right_category_for/)
---
† [See the /r/raspberry\_pi rules.](https://old.reddit.com/r/raspberry_pi/about/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
Reddit
farptr's comment on "2019 Dec 16 Stickied 𝐇𝐄𝐋𝐏𝐃𝐄𝐒𝐊 thread - Do you need help, answers, brain storming ideas, or someone to compliment…
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mobile client. Please [contact the developer of your mobile client](https://www.reddit.com/r/redditmobile/comments/7yzl3j/rredditmobile_101_how_to_report_a_bug/) and let them know they should fix their bug. In the meantime use a web browser in desktop mode instead.
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Reddit
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Do you think the Pi 500 would be a good first computer for young kid?
I have a kindergartener who likes to play on the computers at the library and always wants to type on my computer. I'm looking into setting up an offline computer for my kid to play with and get comfortable with how to operating a computer. I don't know much about Raspberry Pi and it looks like lot of the stuff is focused on coding and electronics projects.
Do you think a pi 500 (etc) would be a good "first computer? It seems like a simple and cheap way to get a kid started with a computer. I'm hopeing for it to have a note pad, a paint program, and some educational games like a typing game or ABC mouse or somethings like that. Kind of like my first computer in 2001.
I would love to hear your thoughts and if you have any recommendations on programs or any tutorials on someone doing something similar. Or just let me know if I'm totally off base. Thank you!
https://redd.it/1pzvljz
@r_raspberry_pi
I have a kindergartener who likes to play on the computers at the library and always wants to type on my computer. I'm looking into setting up an offline computer for my kid to play with and get comfortable with how to operating a computer. I don't know much about Raspberry Pi and it looks like lot of the stuff is focused on coding and electronics projects.
Do you think a pi 500 (etc) would be a good "first computer? It seems like a simple and cheap way to get a kid started with a computer. I'm hopeing for it to have a note pad, a paint program, and some educational games like a typing game or ABC mouse or somethings like that. Kind of like my first computer in 2001.
I would love to hear your thoughts and if you have any recommendations on programs or any tutorials on someone doing something similar. Or just let me know if I'm totally off base. Thank you!
https://redd.it/1pzvljz
@r_raspberry_pi
Reddit
From the raspberry_pi community on Reddit
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Moving a Raspberry Pi weather station from breadboard to field-ready deployment, advice?
Hello everyone!
I've been prototyping a project for a little while now, and I'm looking for advice about how to actually deploy it in the field.
Quick background on what I'm making: it's a cheap weather station with temperature, humidity, pressure, and wind-speed logging capabilities. I'm using a BME280 for the first three, and a reed-switch anemometer for the wind speed. These are all connected to a Raspberry Pi Zero 2.
I also have another few odds and ends (an LED indicator light, a GPIO shutdown button, probably a RTC module coming soon, etc). The intent is for this to run unattended outdoors for moderately long periods (up to ~24 hours at a time, maybe more), possibly deployed by students.
I have everything (mostly) working on a prototype level, my main question concerns how to prepare the circuit/instrument for deployment in the field. I've got everything plugged into a breadboard, and I've only ever really used breadboards, but I know this is not the most secure way to connect things beyond the testing phase.
So my main question is: how do I "transfer" my project to a more secure circuit framework and make it semi-permanent? I don't have experience soldering but suppose I could learn if that's necessary. Should also mention that I'm trying to save money where possible. Any thoughts/suggestions are most welcome. Thanks!
https://redd.it/1q0psja
@r_raspberry_pi
Hello everyone!
I've been prototyping a project for a little while now, and I'm looking for advice about how to actually deploy it in the field.
Quick background on what I'm making: it's a cheap weather station with temperature, humidity, pressure, and wind-speed logging capabilities. I'm using a BME280 for the first three, and a reed-switch anemometer for the wind speed. These are all connected to a Raspberry Pi Zero 2.
I also have another few odds and ends (an LED indicator light, a GPIO shutdown button, probably a RTC module coming soon, etc). The intent is for this to run unattended outdoors for moderately long periods (up to ~24 hours at a time, maybe more), possibly deployed by students.
I have everything (mostly) working on a prototype level, my main question concerns how to prepare the circuit/instrument for deployment in the field. I've got everything plugged into a breadboard, and I've only ever really used breadboards, but I know this is not the most secure way to connect things beyond the testing phase.
So my main question is: how do I "transfer" my project to a more secure circuit framework and make it semi-permanent? I don't have experience soldering but suppose I could learn if that's necessary. Should also mention that I'm trying to save money where possible. Any thoughts/suggestions are most welcome. Thanks!
https://redd.it/1q0psja
@r_raspberry_pi
Adafruit
Adafruit BME280 I2C or SPI Temperature Humidity Pressure Sensor
Bosch has stepped up their game with their new BME280 sensor, an environmental sensor with temperature, barometric pressure and humidity! This sensor is great for all sorts of ...