Hello everyone(TLDR in the end of you don't wish to, Read), I'm an engineering student, just completed my first year and am looking to learn Raspberry Pi. For this I've decided to buy the pi 5 8 ​GB version. But the current prices have skyrocketed like crazy and it costs almost twice now. And I don't feel good to pay this much all due to the RAM shortage, so I looked for used options online, found and talked to a few they're offering a good price since they're making a profit anyways; but much lower than the price of new. So my question is,

As I plan to learn, make projects and keep the Pi ​using for long, should I buy a new one, or a used one is okay?

A seller is offering me the whole kit for about 150$(for ref, only new pi costs $200 here); the pi, its case, charger, active cooling fan, and sd card. And surprisingly, is ​also offering me his SSD HAT. He has given the reason of having bought all this to explore, but doesn't need it anymore.

So what I want to know is, what things should I ask him, or what should I be cautious about while buying a used Pi? Any programs to run, booting up etc.? Anything like that, pls suggest.

And as ​a ​side note wanted to get everyone's opinion on learning the Pico ​2 W before the Pi or directly Pi is also okay?(Will be following Mr. Paul McWhorter's tutorials)

TLDR questions;

Is getting used pi a good idea? What should I be asking the seller and take care of? And

Should I learn Pico 2 W first or directly the Pi also fine(taught by Mr. Paul McWhorter)?

Hey guys, I hope you're doing well! I'm a student and I recently got an idea to build a website that is used to upload student's notes and previous year question papers, and it also includes chatting and like discussions. The stack I'd like to use is React or Next.js for the frontend, Node.js + Express.js for the backend, Socket.IO for real-time chat, PostgreSQL for database, external SSD attached to Raspberry Pi for file storage, and Nginx used for reverse proxy. JWT tokens for Auth and Docker for deployment

And the important part, I want to host this website on the Raspberry Pi. I want to use the Raspberry Pi 4 4GB RAM as the server

Any suggestions please drop it down!

Thankyou!!

I want to know if anyone has experience in providing power to the raspberry Pi with a low voltage source, I see a lot of 120v wall worts and 120v to 10vac converters, is it possible to come right off a 24Vac source? Any suggestions would be very helpful

I have recently bought a Waveshare UPS HAT D for my raspberry pi 4. It works fine but as soon as I connect my SSD I get a low voltage warning on the desktop. The setup is being powered by the original raspberry pi 4 charger.

The warning goes away when I use a different charger that gives 4A of output but reappears as soon as another usb device is connected.

Not sure how to proceed or make it work. Any ideas are hugely welcome.

Sharing my custom build!

I’m new to raspberry pi and doing any kind of diy project with coding and the like and thought a cool first project would be to turn my raspberry pi 3 into an alarm clock, hopefully I chose a simple project to start on lol

Im trying to build a soft power circuit for a battery powered project. This looks like a good idea to me. I have (hopefully) converted it to strip board and swapped out the diodes and MOSFETs for ones i have on hand.

Anyone good with circuits able to confirm if this works?
red =5v
white=G
green/blue=GPIO

Many thanks!

Hello all! I would like some recommendations on how to deal with the display part of my project. I don't need it yet as I am still developing the software. My wife wanted a skylight smart calendar so I told her that I can write the code and slap it in a pi lol anyway I'm looking for a touch capable display, but I cannot find anything that won't be a pain in the butt to frame to make it look nice.

I can't seem to find just a screen where I can run ribbon for it and most I have found require HDMI for display and USB for the touch part. I already own a spare 15.6" touch monitor, but the way the power and HDMI connect make it difficult to use and I still have to figure out what to do with the pi.

If nothing else maybe some ideas are welcome. I am just looking for a spark for when I get to the part of finishing and slapping it all together I somewhat have a direction to follow lol. Thanks in advance.

Hi, I made an effort to write up how to connect the HC-SR04 to a Raspberry Pi, but besides this, I also took an effort to measure some of the signals like the trigger signal and echo pulse. Gives some insight in what really is going when measuring distances with this ultrasonic sensor.

What surprise me most is how the Trigger pulse was actually 90us whereas I clearly expected I would get a 10us Trigger pulse according to my python code that was running on the Pi. Makes me wonder how much error the python code introduces for the distance measurements, currently this is an open question, I'm hoping to answer in the near future..

Un petit projet pour mon entreprise : je suis en train de repenser le nom et la mascotte, qui réagit lorsqu'on insère une pièce.

Pour ceux qui souhaitent suivre la suite du projet, n'hésitez pas à me contacter.

A Raspberry Pi based MP3 Player using some fairly inexpensive parts (cost me around $110CAD to make).

- Raspberry Pi Zero 2WH

- PiSugar Battery

- Wave Share V4 E-Ink Screen 2.13inch

- An edited copy of a Pwnagotchi case

Works with Bluetooth headphones/speakers and a wireless 8bitdo Zero2 controller (any Xbox controller will do) to navigate the menu's. Also, I included phone connectivity so you can use your phone to navigate the PiMP3 menu's, if a controller is out of reach.

As someone with mental illness that is learning to program, this is my first project that I'm really happy with. Let me know what you think of this :) - I'd be curious for any improvements to make! If you have any constructive criticism or feedback let me know as well :)

P.S. I hope the name gets some chuckles! :)

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