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4 views

What exact wireless chip does Pi 4 use?

I will receive my Pi 4 soon, so I started breaking down image generation scripts as I like to make image myself (as I install system on computer same way, by hand). As I want to copy just specific ...
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0answers
5 views

Trying to interface OmniVision OV4689 with Raspberry Pi

I need to capture pictures on a Raspberry Pi (I'm using a Compute Module 3+) using a camera based on the OmniVision OV4689 image sensor. The datasheet for this image sensor can be found here https://...
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1answer
12 views

Subnet on Raspberry Pi

I have a device that is connected to Raspberry Pi via Ethernet cable. The Pi is connected to internet via WiFi. The device should not be visible from the main home network, which has 10.0.0... ip ...
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0answers
7 views

No audio output through 3.5mm jack

I have followed the steps in prior answers and still no sound. Also, when I launch GQRX I get the following error: libEGL warning: DRI2: failed to authenticate Sometimes GQRX will start after the ...
1
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1answer
7 views

Raspberry Pi 4 B I2C is enabled but does not work

I have a Raspberry Pi 4 B and I'm trying to set up in I2C Connection with an MCP23018-E/SP I/O-Port-Expander via GPIO02 and GPIO03. I have enabled I2c on the Raspi by: adding: dtparam=i2c1=on ...
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0answers
4 views

Is there an Arch derivative for Raspberry Pi 2 that has desktop environment preinstalled?

I have a Raspberry Pi 2B, and want to install an Arch based distro on it. Is there a derivative of Arch that supports Pi 2B and also comes with desktop environment preinstalled? Arch Linux Arm ...
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0answers
6 views

Motion Detection in Split Frames using Raspberry Pi

I have a camera which is split into for frames. I'm currently trying to check for motion in each individual split frame. However, it seems that my contours is not being displayed in cv2.imshow, only ...
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0answers
13 views

Reading 4-wire PT1000 using MCP3008

Is it possible to read a 4-wire PT1000 using an MCP3008, which is connected to a Raspberry Pi? I can handle the software part; I am looking for how to wire things up. Is this possible after all? Which ...
0
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1answer
23 views

Is it possible to decrease the power to a PIR sensor either through downgrading or programmatically?

I recently purchased and configured two motion sensors on a Raspberry Pi 3B model. I am very excited as I am getting a reading but the sensors are very responsive. Is there a way to narrow the ...
0
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0answers
14 views

Setup Raspberry Pi Bluetooth using Matlab

I want to set up a built-in Bluetooth module of Raspberry pi for providing wifi SSID and Password using MATLAB. But I don't find any Bluetooth object in MATLAB to connect the raspberry pi Bluetooth. I ...
0
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0answers
25 views

Apache2 documentroot outside of /var/www [closed]

how do I host a site that is outside of the documentroot like /var/www ? I put my documentroot in my website.conf but it shows me 403 Forbidden message. I also tweaked the apache2.conf with a new ...
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0answers
14 views

MPU9250 3D movement. I mean travel

I have a problem to solve for my hexapod project. The robot is RPi4 controlled. I have an MPU9250/BMP280 attached to the RPi4 via I2C. All is well. I've written code so I can make the robot level ...
0
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1answer
19 views

Can the Raspberry Pi work with Ethernet using a USB-Ethernet power adapter?

I have a Google Chromecast Ultra power adapter which includes Ethernet. My thinking, this is a USB to Ethernet adapter that also provides 5V power. Does this work with the Raspberry Pi Zero W to give ...
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0answers
19 views

OSError: [Errno 5] Remote I/O error

I was setting up a joystick using this tutorial. When I ran import RPi.GPIO as GPIO import smbus import time address = 0x48 bus = smbus.SMBus(1) cmd = 0x40 Z_Pin = 12 def analogRead(chn): value =...
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0answers
30 views

Display for RPi

I have question about this port on display I salvaged from old tablet of mine. On many websites I found that this suppose to be LVDS (1 ch, 8-bit) 40 pins Connector, but when I lookup this cable it ...
1
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0answers
36 views

Rotary encoder working on Pi 3 but not on Pi 4

I'm trying to read an encoder switch using wiringPi (latest, 2.52). Whenever there is an edge on either of the encoding pins a or b, I store a snapshot of the state of both pins on two bits: int val = ...
0
votes
1answer
15 views

How to connect raspberry pi zero v1.3 with arduino over bluetooth (HC-06)

I have raspberry pi zero v1.3 which have no build in bluetooth, i want to use hc-06 bluetooth module with raspberry pi and arduino for serial communication, just for receiving data from arduino to ...
0
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2answers
41 views

How can I remotely access the command line on my Raspberry Pi without Wifi?

For a project I'm doing with a Raspberry Pi Zero, I need to access raspi-config, compile some software, and do funky stuff with systemctl. With my other projects, I've always either SSHed into the Pi ...
0
votes
1answer
9 views

Deinitialize GPIO access on I2C channels

On webpage http://abyz.me.uk/rpi/pigpio/examples.html you can find Tiny GPIO Access that defines minimal set of C functions needed to control the GPIO without needing root privileges (it uses /dev/...
0
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1answer
12 views

RPI to NMEA USB (Garmin ECHOMAP plus 45cv) serial input garbled

I have the following hardware: RPI 4 2gb with a basic install of raspbian Garmin echomap plus 45cv USB to NMEA cable (https://www.ebay.com.au/itm/172429550240) 12v 7.0Ah battery The garmin has four ...
0
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0answers
10 views

I2c won't change baudrate in /boot/config.txt [closed]

I am using a Raspberry 4b to read some I2C sensor. I tried changing the baudrate in /boot/config.txt to dtparam=i2c_arm=on dtparam = i2c_arm_baudrate=400000 but it always shows 40kHz on a logic ...
-1
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0answers
23 views

CAN I boot RPI4 power up all 3.3V, 1.8V, 1.2V separately? and remove MxL7704

I am wondering If I can Run RPI4 or RPI CM4 by external 3.3V, 1.8V, 1.2V (x2) connected to board removing Mxl7704 and Chokes. and I may have to pull up RUN signal to RPI. located at MxL7704's 20th pin....
0
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0answers
16 views

Remote control software with resolution auto-resize

I would like to install a remote control software on Raspberry PI 4 Model B. I want to control the Raspberry Pi remotely. I'm planning to install Ubuntu 20.04. I would like the solution to be like ...
1
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0answers
12 views

Why won't Buster Lite boot to anything other than emergency mode on wired Pi Zero when a file system check is done?

I'm running a wired (no onboard bluetooth or wifi) Pi Zero with Buster Lite with latest update/upgrade. When I touch /forcefsck, or put an equivalent statement in /boot/cmdline.txt, it ALWAYS fails ...
0
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0answers
9 views

raspberry pi 4 txrx ttyAMA0 reports a buardrate of 0 despite having tx-rx connection

I am trying to get the LPC1768 to send a "Hello world!" message through its TX-RX pins, but the raspberry pi reports a buad rate of 0 when connected to it via TX-RX: What I've tried: -. ...
0
votes
1answer
18 views

Best approach for smooth 1kHz SPI output

I'm building a raspberry pi project that focuses on outputting analog signals through a DAC connected via SPI. For now, I only need the outputs to be updated every millisecond. I'm testing on a pi3 ...
0
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0answers
23 views

Raspberry Pi DNS server?

So I've got a website. I've got a Dot TK domain. And I've got Cloudflare. But I've always wanted a domain name ending in .com. Then, I got my raspberry pi. I had the pi host my website, and I pointed ...
0
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0answers
9 views

Connecting a Sensirion SPS30 PM sensor to RPi

I am trying to connect the Sensirion SPS30 I'm having trouble connecting it to my breadboard. This is the connection on the sensor. I am thinking that I need a 5 pin JST / Molex to plug into the ...
0
votes
1answer
23 views

Using gpiozero and RPi.GPIO in one script

I use the gpiozero.MotionSensor to detect motion and upon motion to change the state of GPIO pin 17 using RPi.GPIO. This works well. At the end of the script I clean up using RPi.GPIO.cleanup(), but ...
0
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0answers
10 views

LCD external power and touch over same USB interface

I have the following 7inch HDMI LCD display: As you can see it has an HDMI and a micro usb connector. So far for pure rendering I have connected HDMI to my R-PI and micro USB via an adapter to 5V/GND ...
0
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0answers
27 views

raspberrypi bash[597]: [48.0K blob data] Raspbian [closed]

Hi everyone i am developing raspberry pi streaming with ffmpeg and Node-Media-Server. My system worked 4 days. But yesterday my pi have issue. Like this; raspberrypi bash[597]: [48.0K blob data] ...
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0answers
19 views

icons, desktop background disappeared

I closed the Add or Remove Programs program while it was updating packages. I assumed it would just cancel the process. I decided to reboot just to be sure, but when I opened the shutdown menu, the ...
1
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0answers
21 views
+50

How to netboot Ubuntu 20.04.1 Pi4 to Pi4 with dnsmasq…?

I've been trying to netboot my Pi4's using a Pi4 with dnsmasq on Ubuntu. So the idea is to have one Pi with attached storage serving the others. My setup is: master PI with an USB SSD running Ubuntu ...
-1
votes
0answers
28 views

Writing a new library that uses I2C channels

let me start with the description of the problem. I am working on a chip that mainly uses standard I2C communication and occasionally non-standard I2C communication, which involves a third channel ...
2
votes
0answers
52 views

How to run 2 load cells each with a HX711 on Rpi

I've been tinkering, reading watching for weeks and been able only make little progress. First off I have zero knowledge about Python coding (did some ABAP 18 years ago). I'm trying to help my son to ...
1
vote
1answer
28 views

RaspAP connect to WEP WIFI client

I have a raspberry pi setup with raspAP as a mobile hotspot for when I'm on the go at camping sites. Occasionally I encounter an old WEP network, which I can not connect to. I attempted to install ...
0
votes
2answers
16 views

How to connect Rasberry Pi 3 to wireless keyboard on 1st installation [duplicate]

Sorry, not sure if this is the right forum for the question. I have just purchased Rasberry Pi 3 and a wireless keyboard. How do I connect the keyboard to pi during first boot/installation of pi ...
1
vote
1answer
20 views

Can motion and or motioneye be configured to record audio with video files?

I have motioneye running in a docker container on raspberry pi OS on a raspberry pi 4. I have a USB microphone attached, I want to record audio with the video files, in the same file if this is ...
0
votes
1answer
32 views

Raspberry Pi 4B won't connect to 802.11ac WiFi

802.11ac was supposed to be compatible with Pi 4, right? I recently tried using 802.11ac only to maximize the WiFi performance, but as soon as I did that, the Pi disconnected I have & to enable ...
0
votes
0answers
13 views

How do I move a volume group with two disks to another machine?

I have configured a volume group from two USB disks on one machine and put data on it. I need to temporarily use that two-disk volume group on another machine. When I turn off the second machine, put ...
1
vote
2answers
41 views

Systemctl not found on Buster

I recently downloaded the Buster lite installation package and have the latest updates. I get systemctl not found. The systemd files it uses are present. Apt-get systemctl fails. I need to run ...
1
vote
1answer
26 views

Programatically Establishing When RPi Supply Voltage is Too Low

Responses to this post: How does RPi "know" when it hasn't got enough power indicate that there is a digital input somewhere on the RPi which indicates what the supply voltage has ...
0
votes
0answers
13 views

How to set default ALSA input/output in pusleaudio on LibreELEC?

I'm using Raspberry Pi 3 Model B as LibreElec for Kodi. My Pi is connect on TV on HDMI. In kodi, when I select audio outputs HDMI or Jack it play sound well. But when I select Pulseaudio, it don't ...
1
vote
0answers
12 views

Main Menu Editor gone

So I had my pi 4 for a few weeks now and everything was working fine. Suddenly, the main menu editor is missing and I can't seem to restore it. I tried starting it via 'alacarte' but nothing happens. ...
0
votes
2answers
15 views

Grounding with external PSU for servo and raspberrypi

Earlier I had used the USB-C adapter to power my raspberry pi and an external PSU to power the servos. I had to connect the ground of the PSU to the ground of the R-PI so that the control signal from ...
-1
votes
0answers
18 views

headless pi-zero deployment in multiple wifi environments

A pi-zero is configured as CUPS printer server: the goal is to be able to move the pi-zero (and its printer) to one of 5 pre-defined wifi SSIDs + passwords. I understand that the wifi configuration ...
0
votes
0answers
58 views

Python script or button failing after 20 minutes

Below I have a script I'm running on a Raspberry Pi 4 Model B - Basically I have an arcade button that triggers both a power strip and a via Gphoto2 (http://www.gphoto.org/). The script works perfect ...
0
votes
2answers
31 views

Raspbian: run command or script only once in next reboot

I need to run a program or script only once at next reboot of my Raspi. For instance, if i would need to rename a file and change its permissions, the script cp file.old file.new && chmod +rwx ...
-1
votes
0answers
18 views

How to reflash os but keep libraries [closed]

I am currently working with a raspberry pi 4b and a navio2. I have already downloaded the raspbian image and flashed it to an sd card. I have downloaded intel realsense and a bunch of other libraries ...
-1
votes
0answers
30 views

SSH Enablement for headless rPi Zero W

I tried to setup Wifi & SSH on a rPi3: with the intent to transplant the SD to a pi-Zero. I do not have the mini HDMI cable for a rPiZW and have ordered the cable. In the interim, I would like to ...

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