#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.

[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!

[leproton]

Raspberry PI 5 , dispo en octobre 2023

Il semble que les prix des Raspberry ne suivent pas l’inflation de nos carburants et c’est tant mieux puisque nous pouvons désormais trouver le PI4 à un prix “presque” raisonnable sur Amazon avec le modèle 4Go affiché à 87 euros , cependant je vous conseille d’attendre ce mois d’octobre qui passe à la vitesse supérieur avec la sortie du PI 5, proposé en théorie au prix d’environ 80 euros, le PI 5…

[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…

[rosesana]

Raspberry Pi4 Model B 4GB RAM (Made in UK) https://www.tokopedia.com/rosesana/raspberry-pi4-model-b-4gb-ram-made-in-uk https://www.instagram.com/p/CqZ7OkehsYp/?igshid=NGJjMDIxMWI=

[techcree]

Lohnt sich der Raspberry Pi noch?

Die Preise für einen Raspberry Pi 4 mit beispielsweise 4 oder 8 GB RAM sind stark gestiegen. Ist der Pi noch attraktiv?

Wer heute einen Raspberry Pi 4 Einplatinencomputer kaufen möchte muss tief in die Tasche greifen. Eigentlich war der kleine clevere Minicomputer eine gute Alternative als Low-Budget Computer und für Tüfftler zur Realisierung unzähliger Projekte. Doch aktuell steht der Raspberry Pi unter keinem guten Stern. Da äußert sich beispielsweise die Pi Fangemeinde mit harscher Kritik daran, dass die Foundation einen Ex-Polizeiermittler eingestellt hat. Dabei geht es darum zu prüfen, welchen Sinn oder naja Unsinn man mit einem Pi Computer anstellen kann und ggf. auch darf.

Man kann darüber denken wie man will. Jedenfalls ist die Fan-Gemeinde des kleinen Computers derzeit nicht sonderlich begeistert darüber. Negativ wirkt sich sicher auch der massive Preisanstieg aus. Wer vor ein paar Jahren einen Pi Modell 3B noch für ca. 50-70 Euro kaufen konnte, muss für das aktuelle Modell Pi 4 jetzt satte 200 Euro ausgeben. Dabei ist dann auch noch nicht notwendiges Zubehör dabei. Schließlich muss der Pi noch ein netzteil, ein Gehäuse und eine Kühlung bekommen und es werden dann auch noch neben ein paar speziellen Anschlusskabeln, Monitor(e), Tastatur und Maus benötigt.

Sets dazu werden im Handel angeboten und kosten dann inklusive des Pi4 auch gleich mal 300€ und mehr. Natürlich ohne Monitor(e), Tastatur und Maus! Ob das dann noch passt? Sehen wir einen Pi als Alternative zu einem leichten Arbeitsplatz PC, dann stünde der in Konkurrenz auch zu Chromebooks und vielen anderen Mini-Computern, denn die Geräte der Pi Foundation sind ja nicht die einzigen dieser Art auf dem Markt. Und schließlich bleibt auch ein Pi 4 oder in der Version Pi 400 im Hinblick auf die Leistungen ein eher schwaches Gerät.

Punkten kann ein Pi dann eigentlich nur noch allein durch seine GPIO Schnittstellen mit denen man Schaltungen vornehmen kann. Das aber könnte man im Prinzip mit einem Raspberry Pi Pico oder Pico W und einem Chromebook auch. Letztlich bleibt ein Raspberry Pi aber der Star am Himmel der Bastelcomputer und hat nicht ohne Grund viele Anhänger gefunden. Längst warten die aber auf einen Pi 5, also eine neue Version die mehr Leistung haben muss. Und auch die Micro HDMI Anschlüsse haben nicht viele Nutzer so recht überzeugt. Es drüfte also eine Herausforderung bleiben einen Pi zu kreieren, der noch die Größe eines Pi 4 hat und einfach noch besser sein muss.

Günstiger wird es dadruch für den Pi 4 und einen neuen Pi 5 sicher nicht. Und auch der Pi Zero, der für viele Projekte schon geeignet ist kostet derzeit viel zu viel oder ist einfach nicht lieferbar. Fans des Raspberry Pi müssen da aktuell sicher sehr leidensfähig sein. Teurer darf es auf keinen Fall werden, denn dann ist der Pi schlicht nicht mehr konkurrenzfähig oder auch ausserhalb der Budgets, die Bastler oder auch Schulen für ein solches Gerät ausgeben können.

[szhmidty]

#have u never misapplied a heatsink and realised instantly???

No! I've never built a PC before, and the past modifications to pre-builts I've owned didn't touch the CPU or the cooling.

My only experience with CPU cooling solutions was, as above, raspberry pis, and with a raspberry pi 3 your stock cooling solution looks like this:

Thats a small finned heat sink on the cpu, and a small finned heat sink on the IO controller. The Pi 4 also includes a heatsink on the gpu, but I upgraded my Pi4 to an enclosed aluminum case that acts as one giant heatsink and can't take it apart to photograph without ruining the thermal adhesive.

Anyway, a Pi can run fine for a good while without a heatsink, though obviously not ideal, and will never need active cooling unless you try to use it for, like, training neural nets on giant datasets. Which you could do if you were the kind of lunatic to build a cluster of raspberry pis. It wouldn't be worth it, but you could do it.**

I knew I was gonna need a CPU cooler, I just haven't decided what kind I want yet. I built my PC up just enough so that it would POST and was hoping maybe I could get away with slapping Puppy Linux on a USB drive and running some basic hardware tests to make sure nothing was damaged while I figure out what I want for cpu cooling. Yknow, 5-10 minutes of work here and there, let it cool in between, I should have that long before the CPU overheats right?

Nope, the motherboard starts screaming at me a few seconds after POSTing and I gave myself a couple of minor burns on my fingertips when I manually checked my CPU temp.

**My case is massive and contains 4 3.5inch bays and 2 5.25 inch bays, the latter of which could easily hold 6-8 Pi 4s, so that isn't out of the question just yet.

I always assumed CPU cooling was like, a best practice thing, like you could get away with no real cooling for maybe 10-15 minutes as long as you weren't really doing anything besides booting up to your desktop and clicking around, or like you could get away with light work if you had a decent heatsink, but you really need to have active cooling if you're doing any real work.

The raspberry pi is like this: you have a little baby heatsink with some fins and that's it. That's all you'll ever need unless you deliberately stress test the thing.

Turns out no: a real desktop CPU will hit "gives first degree burns on immediate contact with flesh" temperatures within about 10 seconds of sitting in the bios.

[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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[etaprime]

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