#raspberry pi4

[art-of-mathematics]

I made a lego case for my Raspberry Pi4 with fan hat and 3.5" LCD touchscreen module (that is attached with a flatwire to the Raspi-fan hat combination).

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Yesterday's version of the Raspi case without the screen part:

(the top lid can be opened)

[apriltempleos]

october 1st 2024: drafts!

preacher: i'm attaching slightly improved versions of our original drafts, but i'll also include mine and scott's garbage sketches under the cut because i think they're a little bit funny

(image id available through tumblr's accessibility options)

this is a slightly revised version of my original concept for "APRIL".

the main functionality i wanted for "APRIL" was for her to be able to read out words from the templeOS god word app, and ideally without needing keyboard input – hence the microphone. ideally all of her parts are going to fit inside a hollowed out mannequin or doll, which will probably just be the torso, so that she's more portable. for the same reason, i want her to run off a power bank – i want to be able to take her places!

if we manage, we're going to give her an animated LED face which moves to indicate when she's speaking. the way i first pitched it, i wanted it to also change a bit depending on how she "felt" – for example, frowning if the environment was hotter than ideal for the raspberry pi to operate on. but that's a bit beyond our current scope right now. i don't think we even ordered a thermostat.

scott drew the following wiring diagrams based off my original sketch. here revised digitally for readability's sake.

(image id available through the tumblr accessibility options although i fear it's not very good in this case. feedback appreciated).

scott: I decided to go with the raspberry pi zero 2w because it's what I've got experience coding on, it's relatively cheap for the "brains" of the operation (heh) and can perform both tasks from the godword prophecy generation, speaker operation and led matrix operation simultaneously. Plus its small enough to keep the circuit lightweight and fit inside the initial mannequin design.

This drawing fits no kind of engineering standard by the way lol. It was an initial sketch closer to a wiring diagram to see how it'd physically setup and wrap my head around transforming it from mains power to being theoretically portable and running on powerbanks. Unfortunately the LED matrix is really fucking power hungry so needs its own power supply of really specific voltage and current draws hence all the converters.

Also because Im using the smaller and cheaper pi, as oppossed to a stronger system like the pi4, it doesn't have any audio out jack so I plan to use the micro usb for audio out which means yet again I need another adapter for a soundcard and usb to micro usb adapters and all that jazz. Usually sound out can be done through the GPIO pins but the LED matrix takes so many pins that I cant really take anything form them so I had to look for other ways of doing it. Plus this way I get to add a soundcard so if we wanna add microphone support or anything later on we can :)

(Also this is all a little obtuse because I'm trying to do it as much as plug and play and screw terminal style as possible rather than actually solder connections for ease of access and initial setup, but this also works for modular design and component swapping later too so its cool.)

preacher: another reason we're going with plug&play is becauuseeeeee i don't own a soldering iron 😭 it's ok. it's ok.

our silly initial drafts under the cut for your viewing pleasure.

preacher: these were made around 2 weeks ago, so about september 15th ish.

as you can see the first "APRIL" drawing was beautifully drawn with my fat fingers in the facebook messenger photo editor. i think it holds up. lol.

[octo-land]

🔵J’ai soufflé pour lever la couche de poussière qui recouvrait mon Raspberry Pi4. L’avantage de la chose c’est que ça se connecte tout seul à internet, RecalBox fait sa mise à jour et il n’y a plus qu’à jouer. De son pc on peut se connecter directement sur la machine pour téléverser des roms fraîches.

Je vous promets que ma période Dune va passer…

[cinchel]

getting back into linux with a fun raspberryPi setup

while i dont really consider myself an "audiophile" i am picky and want to hear my music library as lossless as possible. my music collection (4.4TB as of this writing) is not all FLAC/lossless but a lot of my favorites i have made sure to have in the highest resolution i can. while most of them are 44.1k/24 i have some at 48/24 and 96/24. these are all served up via a plex server and for a number of years played on my stereo via Sonos Port which is a fine piece of hardware but has some limitations. it works well with the plex server but the interface to search and play music to it is slow and doesnt have all the features that any of the other plex players have (shuffle by album, "artist radio", etc.) also, to plex server the sonos device looks like its outside the network which is annoying.

the sonos port, even via digital coax, maxes out at 44.1/24 and while it says you can send it 48/24 i noticed the plex would downsample it to a lossy AAC stream anyway. trying to figure out how to edit the plex transcoding rules was not easy. that coupled with my annoyance with the interface, it finally pushed me to find a new way to do things.

i've always wanted to play with a raspberryPi but never had a good use case until now. i purchased this Raspberry Pi 5/8GB with the fan case, power supply, 32GB sdCard, and hdmi cable. with shipping it was $145.68

i recently discovered this shop from a friend on blusky, HiFi.me. they make all kinds of USB audio dongles. i recently picked up this Ut-23 which does USB to Optical SPDIF out and i luckily have a optical IN available on my receiver. $40 after shipping.

if i had know then what i read up on the last few weeks i would have maybe not gotten the fan case above and instead gotten this case which has room and knockouts for this pi-hat DIGI 2 pro. giving me the optical SPDIF i wanted. but its a wash in price so no real loss.

my original plan for the raspberryPi was actually for it to be a plex server too which is why i picked up the pi5 with 8GB of ram. but the ARM processor on the pi isnt compatible with the 'sonic analysis' option that plex. so i could have saved some money and gotten a pi4 with 2gb RAM and it would have worked just as well and saved me ~$40.

once i got the pi and setup the initial install i just followed this blog post to install plex amp but i made sure to use the most recent .pkg from here (which at this time of post is 4.11.5)

other tips i noticed at the install: use

sudo raspi-config

to make sure you set the USB audio as the default audio. it helps but i still had to go and set it as the audio output in the plexamp ui and reboot for it to always be the default when i play from plexamp.

why not use the HDMI out on the pi? i mean you bought the cable.

well i couldnt get plexamp to be able to send out audio out on it all. i did some very brief reading and it may have something to do with it being co-opted by the GUI on load. i tried a few things i read but none worked for me. and since i'm just using this for like 99% stereo audio files the limitations of optical SPDIF are not going to affect me.

hope this we helpful

[amr431431]

شاشة تعمل باللمس HDMI7 بدقة 1024x600 بتقنية IPS وتدعم اللمس السعوي HDMI5 لعرض Raspberry Pi4 وجهاز الكمبيوتر الصغير ومراقبة طابعة ثلاثية الأبعاد

🎉صفقة حصرية[؜65.39 ر.س.]

👉 رابط المنتج: https://temu.to/m/ej4ix2u20g9

قد يختلف الخصم، يرجى الرجوع إلى صفحة العرض.

⚠️ يمكن لكل مستخدم جديد للتطبيق الاستفادة مرة واحدة فقط

[kaffekop]

Raspberry Pi4 Sinden Lightgun image - BareBones v9 install, setup and c...

[donutwares]

Nowadays I sleep on the floor…

I’ve been sleeping on the hard floor of my room for the past 2 weeks maybe. It started one day when I managed to fall asleep that way while watching YouTube on my iPad. Now my bed is strewn with my watches, PC peripherals and folded unused sheets. Surprisingly, I sleep rather well like this, waking up fresh and early.

Finally, have RISCOS 5.30 set up on my Raspberry Pi4. I need to get python3 so I can begin to code a browser (I announced it last year) as the OS lacks a decent one. Iris browser is now up for sale tho, about 250RM because of the strong Pound. But having wifi working at last made me want to have a go at my own design. It will be light, fast and modular, containing separate input-edit, list reader, and video feed for 3 things I do: blog, read, and watch. There will be a Javascript preprocessor / filter, and a cert verifier for security. Maybe integration with wget as a download manager.

[robnergal-yt]

pi4 power draw

Running under a full CPU load, a Raspberry Pi 4 should only draw 15.3 Watts per Hour, given a 30 day month that's 720 hours, and therefore 11,016 Watts in a month. Just over 11 KiloWatts, when a kiloWattHour costs roughly $0.12 to 0.20 USD for the electricity. A single boar computer can be kept online at full load, headless, for under $3 per month

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Raspberry Pi and similar computers can be acquired for under 100$

[subcultures]

Bought another Raspberry Pi4 just for this case. Clockspring3D makes good stuff!

[blackmoreops]

Boot Ubuntu Server 22.04 LTS from USB SSD on Raspberry Pi 4

Boot Ubuntu Server 22.04 LTS from USB SSD on Raspberry Pi 4

This is a guide for configuring Raspberry Pi4 to boot Ubuntu from external USB SSD drive instead of SD card. SSD drives are much faster than SD cards, more reliable and now lower cost than SD cards for larger memory sizes.Instructions for Ubuntu server 22.04 LTS are provided. Note that earlier versions of Ubuntu are much more difficult to configure for using external SSDs so I recommend using…

[monicasavesoo-blog]

Savesoo: New BlackFriday Deals US ONLY, raspberry pi 4 screen 79.99 on Amazon, FREE on savesoo Get free now:

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🔥【SENSITIVITY TOUCH & ROTATABLE SCREEN】:Excellent sensitivity capacitive technology and multi-touch capability allows you to swipe, scroll, select, zoom in, zoom out, and move a cursor about in just 3-5 ms.With an auto-rotate function, you can place it your way (portrait or landscape) to get things done easily.Ideal touchscreen monitor for DIY projects! Build-in high-quality Loudspeakers, the speakers are loud enough to watch movies and casual gaming without headphones.

🔥【PLUG & PLAY, WIDELY COMPATIBILITY】: This drive free USB monitor designed HDMI for signal and data transmission, powered via USB.No program or software support required. You can use it with your Raspberry Pi 4/3/2/1/3B+/BB,Banana Pi. Windows 7/8/10 PC, Mac, Microsoft, TV. Video game console like Nintendo Switch/XBOX/PS4. Other devices or systems like Retro Pi, NOOBS, Debian, Ubuntu and Kodi are all supported.

🔥【PROFESSIONAL PI DISPLAY】: Raspberry Pi hobbyist could not miss this fully-featured monitor! Easily mount your R Pi to the exposed backside, Raspberry adaptor board is built in! And with 4 holes on the corner, easy to mount it to your DIY IoT projects that you’re working on. Save your space, keep your desktop neat. Only 0.52lb lightweight and 0.6inch depth touchscreen make it a good choice external monitor for Travel.

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[etaprime]

(via https://www.youtube.com/watch?v=PIZGDPFEoFM)

[onebigwebmaster]

Vous cherchez une borne d'arcade avec des centaines de jeux de type Rétrogaming ? Nos bornes d'arcade RétroGaming sont équipées d'un nano-ordinateur Raspberry PI 4 model B 2GB RAM et permettent de jouer hors ligne à des jeux tels que Space Invaders, Street Fighter ou Pacman. Si dans un élan de nostalgie vous cherchez une borne d'arcade pas cher et décorative, la borne Rétrogaming Raspberry PI 4 2GB à 1400 euros est la borne d'arcade qu'il vous faut.

[zerohour1974]

Playing with the Pi's

Hello ladies and gentlemen, welcome to my ongoing world of waffle. So as the title suggests a friend lent me a Raspberry Pi 3 with 1GB of RAM and a Raspberry Pi 4 with 4GB RAM.

Now in the past I have always been dismissive of the Raspberry Pi so they were lent to me to play with to see if using the items in question would change my perspective.

Well started off with the Pi3. Installed Raspberry Pi OS (Raspbian as it used to be known). It works fine if a little slow but that's to be expected given it only has 1MB of RAM. It will browse the web, but try and do anything beyond that and you start to see the slow down.

I did get the ZX Spectrum emulator Fuse working and providing you never got above double height video it worked alright. I managed to play TLL without too much stutter.

Installed RISC OS next which was interesting for all of about ten seconds. It didn't support the WiFi so I could not install any different software so that was that.

Looked at Retropie... Nice idea but unfortunately it's using RetroArch (the most annoying multi-emulator ever) so I quickly got out of that.

I have yet to find a core on Retroarch I can say yep that works without problems. So as soon as I saw that it was RetroArch. Oh dear well it was a nice thought.

Now I'm sure I am going to get people complaining that if you set Retroarch up correct it's fine. I don't doubt it but it's a faff to sort so it can take a run and jump.

Right having messed around with the Pi3 it was time to move onto the Pi4.

That's when I hit the wall. For some strange reason I was not getting a video output. Now remember this isn't my Raspberry Pi. I am borrowing them from a friend. I am quite concerned.

The adaptor he supplied as soon as I connect the HDMI to it, goes snap. Not good. So I connect up a micro HDMI to HDMI cable. Nothing.

Odd. I eventually get another adapter type and finally I get video. However if you straighten the cable the video cuts out.

I don't know if this is common but video works if it's pulling slightly to the right. I don't think this is common but as the saying goes when in Rome.

Raspbian works as it should and the extra ram is definitely noticed when typing stuff.

One of the things I installed on both versions was Focuswriter (a minimalist word processor). On the Pi3 you had to wait for it catch up when typing. It would normally get it but there was a delay before it appeared on screen.

On the Pi4 this delay seems to have gone thankfully which is to be expected given better processing power, more RAM.

Web browsing works but is still underpowered. However on the 4GB I can open more than one tab which the Pi3 could not.

Video playback is not great and for all they claim the Pi4 can do 4k. Not streaming it can't. It could just say manage 320p without it falling apart.

However that could equally be the fault of my internet as it is not exactly quick.

Audio playback was equally a bit choppy.

Part of me is suspicious due to the strange connection angle required maybe I'm not getting optimal signal here.

I moved on from Raspbian and attempted to get Manjaro ARM to work.

This was a fail. It ran through it's setup then on the reboot refused to start up into X. It just sat there looking dumb and would not accept any keyboard input.

Oh dear not a great start. Ok moving on I discovered a system called Twister OS.

Now it's a modified version of Raspbian but allows window theming, overclocking and seems to have several more basic programs.

Well it starts off fine. It can indeed be themed to look like Windows 95, Windows XP, Windows 7, Mac OS X (light and dark modes) and its own TwisterOS desktop.

They all change easily using the Twister themes and each time you have to restart but it's quick and responsive so not bad at all.

The overclock can be set manually or be set using the modes of on-demand or performance from the system tools menu.

Being it is a modified Raspbian install it can use all of the same programs so tested with Focuswriter.

It runs smoothly. Loaded Fuse the Spectrum emulator and it has no real issues. Then I try the challenge.

MAME is always a good test. I had ran it on the Pi3 before now and while things loaded it struggled with sound and frame rates were inconsistent.

Well it seems running under TwisterOS. MAME ran my test games of Frogger, R-Type, R-Type II and StarForce without issue. I did not even seem to have to switch it to performance which I thought I might but they all worked fine with no major slowdown.

So bonus points to the Pi4 it worked regarding basic emulation pretty well.

To be honest running the Pi4 with TwisterOS it really isn't bad. Obviously provided you don't intend to use it to stream video the Pi4 is definitely an improvement over the Pi3.

Now I admit the Raspberry Pi isn't aimed at me. Don't get me wrong it can emulate stuff, but the Pi is aimed at programming types or engineering people.

They will try and connect the Raspberry Pi to cameras to monitor birds, or connect to your doorbell be a monitoring device. Or sit and teach your kids how to program in BASIC using Scratch.

I don't have the patience for that sort of stuff or the skill as normally it involves soldering or programming neither of which I can be fussed about.

Is the Raspberry Pi a bad idea. Not at all I'm sure someone always finds ingenious ways to use one. Am I one of those people... nope.

Do I think I will ever invest in a Raspberry Pi. Answer probably not but now at least I can admit that the Pi4 is not as bad as I thought it was.

Now my experience is over I can return the Pi's to their owner forthwith. Job done...

Not the world's worst thing available but not something I really need in my life.