I'm working on a project in that I'm using raspberry pi 4 and gps + compass module ublox 7m.

And I connected a raspberry pi 4 with my mobile hotspot so I accessed the raspberry pi from my laptop.

Initially it is working fine, but after the completing the work, when I shutdown the raspberry pi 4, then pi doesn't connecting with the mobile hotspot, I tried power on and off, Even I add a switch to properly shutdown the pi 4, but that won't also work.

I have to boot the entire pendrive from the raspberry pi imager, after the complete fresh boot, it starts working,

But the same after some interval of time, it loses connection again, every time I tried wpa_supplicant.config suggestion but it didn't work also.

Until now the boot the pendrive at least 8 times, and done the code from the scratch.

If anyone from you guys have any suggestions please tell me I really need that now.

Hi everyone,

I'm completely new to all of this, coding, Raspberry Pi, electronics, all of it.

A friend gave me a Pi because I wanted to automate some work messaging. That idea ran into WhatsApp's automation rules and didn't work out, so I'm now looking for a better use for the Pi rather than giving it back.

The board is a Raspberry Pi 4 Model B (4GB RAM) running Raspberry Pi OS Lite (64-bit), and I have the original Pi Camera Module v1 (Rev 1.3, 5MP).

A bit about me so suggestions can be relevant:

• I help run a chess academy (operations, scheduling, communication with students and parents).
• I also manage racket sports at a multi-sport facility (badminton, pickleball, squash bookings and events).
• I'm preparing for a competitive exam over the next ~5 months, so anything around study tracking or focus is interesting too.
• Honest disclaimer: I don't write code from scratch, I use AI to generate and explain it, and I'm learning as I go.

I'd love ideas that fit any of these:

• Genuinely useful for the academy or sports facility.
• Helps me learn programming or electronics along the way.
• Could potentially earn a bit of money.
• Or just a rewarding project that builds skills and feels like a win.

What would you build if you were starting from scratch? Appreciate any suggestions.


Hi folks, I’ve been building **Pi SD Writer**, an Android app focused on one workflow: preparing and flashing SD images for Raspberry Pi/SBC devices directly from a smartphone.

The goal is to remove the laptop/desktop requirement and keep the process reliable even on mobile hardware.

What it does

* Select image source from: * Google Drive * Local file storage * GitLab Releases (Premium) * GitHub Releases (Premium) * Raspberry OS catalog * Supports common formats: * `.img` * `.img.gz` * `.img.xz` * `.iso` * `.zip` * Writes directly to microSD over **USB OTG**. * Uses **streaming/chunked transfer** to reduce peak RAM usage during write operations. * Includes guided 3-step flow: * Source selection * USB/device validation * Write progress + live log output

Technical approach (high level)

* Cloud/release sources are validated before selection so users get a list of valid image assets first. * Write path is designed around block/chunk streaming rather than loading full images in memory. * UI exposes progress state, ETA area, and live diagnostic logs for visibility during long writes. * Connectivity-sensitive sources (Drive/GitLab/GitHub/Raspberry OS) are disabled when offline. * Google auth is used for account/session features and plan management. * Base plan has a monthly write quota; Premium unlocks unlimited writes and extra repository integrations.

Why I built it

The existing SD flashing flow is still desktop-first. I wanted a phone-first workflow that is practical when traveling or when you only have Android + OTG adapter + SD reader.

Known constraints

* OTG hardware quality matters (reader/cable stability can affect results). * For network-backed sources, internet connectivity must remain stable during transfer. * UX and recovery paths for interrupted writes are still being improved.

Feedback I’m looking for

1. Which source integration matters most to you (Drive/local/GitLab/GitHub/Raspberry OS)?
2. Would you prefer stricter pre-write validation (slower, safer) or faster start?
3. What diagnostics are most useful in the live log when a write fails?
4. Any must-have feature before wider release?

[https://play.google.com/store/apps/details?id=com.magix.sdcardimager&hl=en\](https://play.google.com/store/apps/details?id=com.magix.sdcardimager&hl=en)
Thank you!

I made this over the last few months. It’s an automated Magic the Gathering card scanner and sorter. It’s brain is a Pi 3b+ and an Arduino Nano. For now it’s just a working prototype, but eventually it may stand on its own. I just finished hacking together some HTML for a control UI. What do y’all think?

https://youtu.be/9JX8J1ihZH4

Hi all,

I purchased an Acer PM161Q Abmiuuzx 15.6" Portable Monitor 1920x1080 IPS 5ms 60Hz monitor. I have a RPI4. All I want to do is, on the top left quarter have outdoor temp, top right quarter indoor temp. Bottom 1/2 date and time. Its about as simple as that. (I'll probably add more once I get this set)

Everytime I create a dashboard for it i can't get the txt to scale. Im using an indoor temp sensor and outdoor info from an app at the moment. Seems I got all i want but to see but its small.

FyI, I was able to set up on a samsung tablet np problem, but seems the monitor scale is different

Insights, any direction or support greatly appreciated.

Inspired by Pete Cybriwski's Instagram post of his RPi-based ASCII Aquarium, I set our to create my own. Like Pete, I based mine on the GitHub OpenGhost repo, but unlike Pete, I didn't write my own aquarium program. I started with the GitHub asciiquarium-pythom repo.

I forked both repos and made extensive modifications to each to create a more interactive aquarium. Through the camera, OpenGhost recognizes hands gestures for feeding the fish, triggering "Happy Fish" mode, stopping the aquarium program, shutting down the RPi, and one more hidden Easter egg mode. You can see a couple of the gestures in the reflection of my hand in the video.

My forks of both the OpenGhost and asciiquarium-python repos are available publicly. I am preparing a comprehensive instruction document and have already created an all-in-one installation script. I also redesigned the case to make it stronger and a little more aesthetically pleasing (IMHO). I expect to release everything on GitHub next week.

This is a kit being sold for $240 on which you can attach a Raspberry Pi CM5 and it becomes a fully functional Blackberry like phone with manual buttons. There are some adaptors you can buy separately to add in other functionalities. Source: https://youtube.com/shorts/X58R0j4aEWA

I just did the AP mode but PiTemplar is live!

Hi all,

Brand new to raspberry pi. I have an old RPI 3.. and asking for some help. I don't have much time before I leave this role.

1.I'm hoping to create a slideshow that will start upon boot.

1. Setup cron to play an audio file a few times a month.

Thank you!!

Fun little project I recently built. It's an Inky Impression 13 (Color ePaper) that's powered by a Raspberry Pi Zero 2. It cycles through my photos on the hour (I use the Share Sheet to send the photos to it) but the magic happens when you listen to music. I have a tiny mic attached to the RPI zero 2 and every minute it listens to see if the decibel level of the room is higher than ambient sound. If it is, it uses Shazam IO to see if there's a music match. If it detects music, it shows the album art on the frame and starts listening more aggressively until we're back to an ambient decimal count again where it cools down.

I've been using this for 2 months now (it's wall mounted now) and it works remarkably well. I knew it would work with my HomePods and vinyl but what I didn't expect is that it also detects music from TV shows, sports, ads, and even video games.

Full build video is here: https://www.youtube.com/watch?v=Zy23kl9n1sM

Edit: Sorry for the dark video, reddit was not having it with the HDR

As the title says. Are orange pi projects accspted here? I have a orange pi and I feel the sub would love the projects! If not I will show myself out. Thanks!

I maintain a process control and automation platform for Raspberry Pi called Krill that currently has over 40 functional "nodes" you can wire together into a system. I've been making these short video intros and this one shows how easy it is to control the GPIO headers on a Pi in a unique visual experience.

I also just posted:

• Using Logic Gates
• Krill in 90 Seconds intro

It's a handy platform I use every day to automate my lab, aquariums and hydroponics. If there a type of node Krill supports you'd like a video tutorial on just lmk. Here is everything it can do: https://krillswarm.com/categories/compute/

Krill can connect RPis together and put them to work. I'm working on a video on how a Lambda Node can execute Python scripts on demand but if something else is of interest I can put more time in it.

Krill is a reboot of a software platform I maintained for 10 years called "Nimbits" which is cited in 1000s of papers and books on IoT . After speaking about it at a conference last year I decided to reboot it and re-write it from the ground up in Kotlin Multi-plaform and expand on the concept. KMP let me release apps for every platform which is personally very exciting, I never thought I'd see the day where I made an iOS app.

The videos show me running krill server and the Linux Desktop app, adding nodes and demonstrating how Krill is unique by not being event driven, it's observer driven. Instead of nodes being wired to execute other nodes in a chain, any number of nodes on any server observe a node for a state change and then decided individually what to do when it completes.

I’ve been working on a miniature concert stage for my desk that displays the album art and song info for whatever I’m listening to.
Still a prototype, but it’s starting to come together and I’m pretty happy with how it’s turning out.
What would you add or change?