Hello, My RaspberryPi 4B was purchased July 2022. The microSDHC card was purchased a couple years ago, but had remained unopened until today. This microSDHC works for other purposes such as photography. RaspberryPi Imager is able to flash the card. However, when I put it into my RaspberryPi and power on, it fails to boot (I am setting up headless). When using an older 8GB card, the RaspberryPi successfully boots. The only problem is that it writes very slowly and I want to switch to my larger 32GB microSD, but this one won’t boot. I have updated EEPROM using the working microSD and tried recovering it using the RaspberryPi Imager boot loader option. Is anyone able to help? Thank you in advance!

Hi, I run in to the problem and I have tried everything what I could find in the google and my VNC still does not work. I am having error that says error getting private key from registry BigNumReadF. Any idea how to tackle that? Cheers Dan

Hello. I am trying to install an OS to a Pi 4B (1gb ram). I started with the official guide and used the RPi-Imager. I also pre-configured the SSID and enabled ssh to simplify things after. Once powered on it boots seemingly normal, act intermittent quick flashes, however it then seemingly reboots (red/power light goes out) and then the Act light blinks 9 or 10 times, a possible HALT mode. This happens every time the pi is powered on, on both, I later learned this happens with Raspbian Lite 64bit and Raspbian Lite Legacy

Hi, I making one application using ElectronJS. On that app my video getting lagging/freezing. For testing purpose I tried play that video on Chrome browser same issue facing in Chrome also. I tried with VLC, If I keep full-screen video is running proper but if it is not full-screen it getting lagging. Any idea how to fix? Is there any way increase performance of a specific application?

Said cam is then probably faulty and would blow other pcs.

<@661594563919740967> Thought I would move the conversation here as it’s getting lost in the general thread. Have you rebooted your pi since installing OpenVPN? This is a required step to be able to install the tunnel device that OpenVPN uses. Also, you will need to get or set a new IP address on the vpn tunnel.

so we're making project to monitor air and sound pollution on raspberry and we want to display the sensor data(real time) on P10 LED Matrix i need exact instructions on how to do it and also which components and sensors to use to make it possible

I don't exact cause of issue, which is why I need help. I feel like it's because of large files or something about overloading, but it doesn't seem to crash syncing small stuff, but when it's a gigabyte on my phone especially but also on my pc sometimes, it just kinda crashes, hard drive is still blinking, internet is also blinking, no response from ssh nor nextcloud server, it just times out, I have to unplug the system which is a risk and let it boot again to fix this issue. What could it be, please help, I don't think it could be a problem with the router, but idk

the windows is too big to display i try to run an opencv road sign detection import cv2 # Stop Sign Cascade Classifier xml stop_sign = cv2.CascadeClassifier('cascade_stop_sign.xml') cap = cv2.VideoCapture(0) while cap.isOpened(): _, img = cap.read() gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) stop_sign_scaled = stop_sign.detectMultiScale(gray, 1.3, 5) # Detect the stop sign, x,y = origin points, w = width, h = height for (x, y, w, h) in stop_sign_scaled: # Draw rectangle around the stop sign stop_sign_rectangle = cv2.rectangle(img, (x,y), (x+w, y+h), (0, 255, 0), 3) # Write "Stop sign" on the bottom of the rectangle stop_sign_text = cv2.putText(img=stop_sign_rectangle, text="Stop Sign", org=(x, y+h+30), fontFace=cv2.FONT_HERSHEY_SIMPLEX, fontScale=1, color=(0, 0, 255), thickness=2, lineType=cv2.LINE_4) cv2.imshow("img", img) key = cv2.waitKey(30) if key == ord('q'): cap.release() cv2.destroyAllWindows() break

I installed Ubuntu 20.04 on this RaspBerry but when I try to download a program, like Google Chrome or whatever program I think about and try to install it, it says that the architecture (amd64) is not the one that I can run (arm64). I do not really know what this means.

Here's the code that the arduino is running, I wrote it myself:

arduino
#define latchPin 5
#define clockPin 6
#define dataPin 4
#define outputEnable 3
#define disp1 7
#define disp2 8
#define disp3 9
#define disp4 10

char *seg = (char []) {B11111100, B01100000, B11011010, B11110010, B01100110, B10110110, B10111110, B11100000, B11111110, B11110110};

byte leds = 0;
int num = 0;

void setup() {
  pinMode(latchPin, OUTPUT);
  pinMode(dataPin, OUTPUT);  
  pinMode(clockPin, OUTPUT);
  pinMode(outputEnable, OUTPUT);
  pinMode(disp1, OUTPUT);
  digitalWrite(disp1, HIGH);
  pinMode(disp2, OUTPUT);
  digitalWrite(disp2, HIGH);
  pinMode(disp3, OUTPUT);
  digitalWrite(disp3, HIGH);
  pinMode(disp4, OUTPUT);
  digitalWrite(disp4, HIGH);

  cli();
  
  TCCR1A = 0;
  TCCR1B = 0;
  
  TCCR1B |= B00000100;
  TIMSK1 |= B00000010;

  OCR1A = 31250;
  sei();
}

ISR(TIMER1_COMPA_vect) {
  TCNT1 = 0;
  num++;
}

void loop() {
    writeDisplay(num);
}

void writeDisplay(int x) {
  for (int i = 0; i < 4; i++) {
    switch (i) {
      case 0:
        leds = seg[x & 0xFF];
        updateShiftRegister();
        digitalWrite(disp1, LOW);
        delay(1);
        digitalWrite(disp1, HIGH);
        break;
      case 1:
        leds = seg[(x >> 8) & 0xFF];
        updateShiftRegister();
        digitalWrite(disp2, LOW);
        delay(1);
        digitalWrite(disp2, HIGH);
        break;
      case 2:
        leds = seg[(x >> 16) & 0xFF];
        updateShiftRegister();
        digitalWrite(disp3, LOW);
        delay(1);
        digitalWrite(disp3, HIGH);
        break;
      case 3:
        leds = seg[(x >> 24) & 0xFF];
        updateShiftRegister();
        digitalWrite(disp4, LOW);
        delay(1);
        digitalWrite(disp4, HIGH);
        break;  
    }
  }
}

void updateShiftRegister() {
  digitalWrite(outputEnable, HIGH);
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, LSBFIRST, leds);
  digitalWrite(latchPin, HIGH);
  digitalWrite(outputEnable, LOW);
}

I just downloaded the default rpi systen onto my SD card and when i put it in my pi everything goes great until the welcome screen flashes for about a second and then my rpi starts shining red and the screen turns off. Please help.

So, I’m gonna try and turn my Pi into a router using OpenWRT. But I want to use a WAP instead of built in wifi chip or wifi dongle. Would you just connect it to the WAP with a Ethernet cable, then connect the WAP to your main router? Anddd, how would you even setup OpenWRT to use the Ethernet cable to send/receive data?

Hi, im trying to make a small LAN website that i can easily modify, ive already gotten a small webpage up using ssh, apache, and filezilla which makes everything run smooth rn. I want to add a livestream of a usb webcam that shows a 720p ~30fps vid of my 3d printer. Ive researched a lot and found no results that allow me to do the same where i can edit server files using filezilla or smth similar to that (if someone could find me a solution like that, i would appreciate it. Anyways another solution i thought of is streaming my usb webcam to yt and embedding it on the site, so far i watched this tutorial: https://youtu.be/cRycXUIK07g and its exactly what i need BUT i dont have a raspberry pi cam. how could i get it to work for a usb webcam?

raspivid -o - -t 0 -vf -hf -fps 30 -b 6000000 | ffmpeg -re -ar 44100 -ac 2 -acodec pcm_s16le -f s16le -ac 2 -i /dev/zero -f h264 -i - -vcodec copy -acodec aac -ab 128k -g 50 -strict experimental -f flv rtmp://a.rtmp.youtube.com/live2/(stream key)

Im using a rpi 1 but have multiple rpi 1s if running both tasks is to much for the rpi 1. i unfortunately though dont have anything more recent or better. any help is appreciated, ty! ^^

Does this just mean the SD card is broken, or my rpi?

I noticed that my current psu isnt the most efficient option (need only up to 70watts output) so i have read a lot about picoPSUs and im planning to take a closer look to this one: https://gzhls.at/blob/ldb/9/a/7/5/ad5c00ea50547fd8c56a92034a57dbf34a65.pdf of course i need a 12V power brick for those, but the connector is different than the normal barrel connectors, what is this connector called and where can i find a power brick/adapter for that?