All Questions

I'm trying to connect raspberry with another pcb via spi. It is connected via spi1 port and I can't change it. So I have a python script that works well, so I can send and receive data. The python ...

Followed the tutorial using the Raspberry Pi Imager and installed the latest Octopi O/S onto first a Sandisk 64gb card then a 32gb Sandisk card Both flashed green a few times on and off then the red ...

Have configured a Pi4 5.5 touchdisplay and a sparkfun GPS-RTK Dead Reckoning ZED-F9R. Looking to power this from a 12V supply. Been using a stepdown converter like this. DC 5V Step-Down Converter Buck ...

I am using the max7219 library from luma.led_matrix.device import max7219 However, if I use 12 8x8 dot displays in series, the scrolling font lags on random occasions. It looks like it lags for some ...

intro i want to use multiple SPI busses at the same time. but when i use to use SPI 4 and SPI 5 at the same time it crashes the whole system it doesn't crash instantly sometimes it takes 10 seconds ...

I'm trying to flash Ubuntu Server 20.04 LTS using the Raspberry Pi Imager for my Raspberry Pi 2B, but boot fails on the blended colors / rainbow screen and blinks the green LED seven times. As I ...

After around 10 minutes of starting up my Raspberry Pi (Model 4b) and being SSH'd into it, it freezes. If I try to reconnect I just get connection timed out. I've connected it to a monitor and it ...

I wrote a code that I run in Thonny which detects if a connection is made between the 3.3V output and a GPIO pin on the Raspberry Pico: print("Hello World!") import time import digitalio ...

I'm trying to read from a handful of switches connected to a MCP23S17 port expander using pigpio, however I'm not getting any useful results. Whatever my switch values, I have 0 returned. I've checked ...

I'm using Raspberry Pi to run Onion Share and ProtonVPN on a CanaKit Raspberry Pi 4. I check it once a day. Moving the mouse wakes it up. But if I miss a day, moving the mouse does not wake it up. ...

I have a raspberry pi 3 B that apparently stopped working after a thunderstorm. When it's plugged the red power led turns on but I can't boot the OS. I checked the voltage on GPIO pins and I get: 2....

I was following this tutorial on how to make your own basic OS for an x86_64 system in rust, but wanted to do it for an ARM64 target, specifically, the raspberry pi 4. I am at the point where I have ...

I'd like to trigger audio clips remotely on a rpi. This is for a Halloween decoration. ~20 audio clips, all of which can be whatever format (wav) and in a folder local on the rpi. I can record and ...

I have two weird situations. I configured my pi4-4gb to be an access point for a private network. The goal is to allow multiple pi-zero-w to connect to this access point and also allow, when connected ...

I want to use a travel router to increase connection of my raspberry pi AP. How can I use the USB travel router as wlan1. Then Use wlan1 as my AP interface.

EDIT: The problem ended up being that the ribbon cable going to my breadboard was rotated 180º. I was taking this into account, but doing so incorrectly. Once I correctly labeled the rotated pinout, I ...

I purchased a pair of Logitech S150 USB speakers for my pi 400. When I booted up the pi, I immediately started hearing a digital voice reading the web page I brought up. I removed the USB connection ...

The kdiff3 on Stretch worked okay, but the new version on Buster crashes, says it cannot scan files, etc and does not work for me. Is there an alternative to kdiff3 for comparing large directory trees ...

I dont know why, but I can only execute a very small pallet of commands (I cane even execute echo) For some reason, 99% of the commands that you would normally be able to do in the terminal itself, ...

I was following this guide from Adafruit to flash an Arduino with a Pi using AVR-Dude over SPI: https://learn.adafruit.com/program-an-avr-or-arduino-using-raspberry-pi-gpio-pins?view=all I noticed ...

i am working on compute module 3 plus. and os is respbian buster. I need only wifi and usb services . so please could you please help me how can i boot the fast. because compute takes more than 20 sec ...

I followed the following steps to set up my sd card to make a raspberrypi zero W connect via usb cable. Initially I always received the error message "Unable to open connection to raspberrypi....

In my program, I have 10 push buttons In a certain function of my program, I need to check if a particular push button is pressed. If it is pressed, function A should be called, while if any other ...

With all the raspberry pi hats popping on and off, dtoverlay and /boot/config.txt is a very nice method to quickly tell the kernel that you've got new device tree information. But I've never seen this ...

I inherited a Python code from a former coworker that uses pigpio library to control Raspberry Pi pins. This code is running inside a Docker on the Raspberry Pi I am now experiencing a problem in ...

I've been using C code based on a convenient linux_i2c-dev.h, but there seems to be no function to read 2 bytes without sending a command byte first. I want the code to work on both PI3s & PI4s. ...

there! I'm planning to use the Raspberry Pi Pico for a project and I'll be using a SCA60c tilt sensor with it. I know that the Pico only has a 3.3V output but the SCA60C needs 5V to power it. I was ...

I have a Tkinter script running in fullscreen mode. I have a function which calls the matchbox-keyboard command using the subprocess module when clicked on an input field. This works fine, but the ...

I'm building a display/kiosk for a nightclub and would like a slideshow of images and videos that can be scheduled. For example: On a Friday night, a slide show of a selection of images / video is ...

I have bought three raspberry pi's with the intention of using them as temperature sensors throughout the building. I have bought the following models: 1 raspberry pi 4 model b 2gb 2 raspberry pi 4 ...

How many callback events is cached in add_event_detect function? In my example below start_thread is executed just twice, but it is fired up five times (by the loop). To me it looks, that GPIO library ...

Which of BCM GPIO registers - datasheet page 89 - is correct to verify register register state ? - high / low and does it depends how the register is configured? register function ? is register ...

I've been working on a project using the HQ camera where I want to take a small bitmap image (100x100), do some analysis on the bmp file, and using that information determine whether that exposure ...

I was trying to learn how to set up communication between two raspberry pi in close proximity in a remote area without a router. I am new to raspberry pi and started trying to figure out MQTT/...

I have a RPi4B, MH-Z19C CO2 sensor and a UART to USB adapter. When I connect to the sensor using USB I get stable readings: {'co2': 1001, 'temp': 19, 'S': 0, 'U': 0} {'co2': 1006, 'temp': 19, 'S': 0, '...

I have 3 CCTV cameras connected to a DVI. The DVI is accessible through its own wifi hotspot(ssid+password). I can connect to the wifi of DVI and see the camera feeds. The DVI is not connected to the ...

I am trying to run the perf_event_open documentation example (below) but it returns "Error opening leader 1". I am on a Rasp B+, ARM1176JZF-STM, Raspbian GNU/Linux 10 (buster), kernel 5.10....

My goal is to install a Minecraft server on my Raspberry Pi 4B with 8GB RAM. I mainly followed this guide which includes a script to install all of the components quickly. The main commands are: wget -...

I'm wanting to run different os (raspberry os, kail, etc...). What i'm wanting to know is it safe to remove the sd (turned off) and can I use other sd card in the same pi?

I am getting in trouble with the i2c detection with raspberry Pi 4b . Sometimes it is detecting multiple devices on the same bus. And sometimes nothing detected.

If the script is run then ds64-shell will popup. another command will be run after i exit ds64 shell how can i run this command Result after running :

I purchased a RPi Starter Kit and decided the breadboard wasn’t large enough. I got new ones and uhh... The sockets don’t grab on to resistors. Only real thing I can do is this: There’s probably not ...

I have a Pi4 running latest and completely fresh Raspbian, I'm trying to connect a 4G LTE modem through USB to setup a link so I can use the Raspberry Pi as NAT to enable multiple devices to use the ...

I have a phone and a tablet that I would like to connect via Bluetooth to an Amplifier in my car. I would like to be able to easily switch the audio between the two devices. eg, quickly switch from ...

Latest raspberry pi os lite installed on a raspi4 4gb, customized to my needs. I can normally SSH into it, everyhing works. I then reboot (sudo reboot) and raspi won't respond to SSH connection ...

I am not able to connect to my RPi4 via SSH (Open SSH) from windows abruptly. it was working fine and stop working suddenly. I am able to ping to RPi from windows successfully. SSH from this windows ...

OS: RetroPie 4.7 I want to use my Raspberry Pi as a Chromecast stick and followed this tutorial: https://www.instructables.com/Raspberry-Pi-As-Chromecast-Alternative-Raspicast/ When i enter the 'git ...

Using this lib: https://github.com/rudiratlos/hotspot I would like to create the AP on wlan1 (wifi dongle), instead of wlan0 (internal wifi), but looks like I cannot do it for some reason. The command ...

During the installation of the Raspberry Pi OS on the Raspberry 4, I could see a small border around my video display so I pressed the button designed to eliminate that border. I shouldn't have done ...

I'd like to generate 38kHz & 50% duty cycle PWM signals on multiple GPIO pins. Hence hardware PWM won't work for me. Does anyone have a chance to generate this signal by using python or node.js? ...