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GPIO extension - USB to GPIO module (NOT GPIO to USB)

I ran out of GPIO on my RPI and now looking for a module to converts USB to GPIO for my Raspberry. I am not interested in converting GPIO to USB, but interested in USB to GPIO. I've been googling for ...
0
votes
1answer
6 views

How to sync clock on raspberry pi with restricted internet traffic

I have a few raspberry pi's operating at a customer facility, and this facility has restricted the pi's traffic to only the IP of my server (digital ocean ubuntu droplet running a django application). ...
0
votes
0answers
3 views

DNS Issue for networking

I was trying to configure for my Raspberry to be client and access point mode when I run into problem of access the web and even apt-get update This is the diagnostic that I have done: First i try to ...
0
votes
0answers
11 views

Raspberry Pi Zero as Keyboard for iOS

I followed this guide to turn my pi into a HID keyboard. The basic idea is you use code to send whatever keystrokes you desire. It seems to be working with macOS but not iOS. I am using a lightning to ...
0
votes
1answer
12 views

Problems when changing the wifi-direct password

I would like to create a Wifi-Direct access point where the board needs to act as the GO. I am using the following configuration file for wpa_supplicant (wpa_supplicant.conf): ctrl_interface=/var/run/...
0
votes
0answers
9 views

How to eliminate audio output

After installing a webcam, and configuring sound and video, I see that my system considers that I have 2 analog audio devices (seen by VLC). One works and the other doesn't when I'm listening to music....
0
votes
1answer
21 views

Using pi as router

What is the minimal config needed, to be able to specify some static route for network subset (eg 10.199.0.0/16), so that my raspberry redirects to internal PC? LAPTOP (pink) is connecting via VPN to ...
0
votes
0answers
9 views

Video and pictures on gmediarender

I managed to get audio with bubbleupnp from my android device to my RPi 3 that runs gmediarender, but when I try video it only outputs audio and no video. I can't understand is it even possible to ...
0
votes
2answers
24 views

Pi crashes without apparent reason

I own a Pi4 (4GB), and I'm having some issues. The pi crashes with no apparent reason. By crashes I mean it becomes unreacheable via ssh, PiHole and HomeAssistant that are running on it become ...
0
votes
2answers
39 views

C or Python With Physical Computing [closed]

I am a professional programmer with 15 years experience in bash, javascript, Python, Java etc looking to do some projects with my pi... Physical computing. I want to involve my 13 yr old son but also ...
0
votes
0answers
11 views

Raspberry Pi4 - unable to access network drive from one Win 10 PC

I am using a Pi4 with Buster Lite and a USB connected HDD as a Server at home. For some reason I cannot access the Server Drive from one Win 10 PC in my home??? I can ping the address and can use ...
0
votes
1answer
12 views

Why does my Bluetooth adapters only allow connection to 5 BLE sensors?

I am trying to connect 7 BLE sensors to my Raspberry Pi using an external bluetooth adapter. However, I can only connect 5 units simoustanely. I have tried with three different bluetooth adapters. Two ...
-1
votes
0answers
14 views

Ubuntu 20.04 on raspberry pi does not login at login screen

I am trying to manage ubuntu on raspberry as a desktop computer, and after starting and closing some sessions, it does not allow me to go from the login screen to my desktop, someone will have some ...
0
votes
1answer
18 views

Raspian cannot install v4l2loopback-dkms using either 32 OR 64 bit

I am trying to follow this guide to stream video output from a DSLR camera to twitch via the command line. There appears to be a straightforward way to do it using raspivid https://medium.com/nerdery/...
0
votes
0answers
10 views

Device drivers only working on boot

I am trying to connect some peripheral devices (test equipment) to a Raspberry Pi 4B+ running Raspbian and I am running into issues with device drivers for serial (using a pl2303 driver) and usb ...
1
vote
2answers
56 views

How exactly do i make a LED Blink? I tried every possible result

I am trying to make a LED blink on a Raspberry Pi Breadboard, but after everything I've tried, it doesn't work. I have tried: Changing wires and moving them around Switching LED's to check if the ...
1
vote
1answer
23 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 ...
0
votes
0answers
18 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://...
1
vote
3answers
51 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 ...
0
votes
0answers
16 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
vote
1answer
17 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 ...
0
votes
0answers
9 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 ...
0
votes
0answers
11 views

Motion Detection in Split Frames using Raspberry Pi [closed]

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 ...
0
votes
0answers
21 views

Reading 4-wire PT1000 using MCP3008 [closed]

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
votes
1answer
33 views

Is it possible to narrow the sensor beam on a PIR motion sensor?

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
votes
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
votes
0answers
26 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 ...
0
votes
0answers
20 views

MPU9250 3D movement. I mean travel [closed]

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
votes
1answer
20 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 ...
0
votes
0answers
27 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 =...
0
votes
0answers
36 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
vote
0answers
41 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
17 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
votes
2answers
44 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
10 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
votes
1answer
14 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
votes
0answers
11 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
votes
0answers
25 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
votes
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
vote
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
votes
0answers
10 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
19 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
votes
0answers
23 views

Raspberry Pi DNS server? [closed]

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
votes
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
24 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
votes
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
votes
0answers
28 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] ...
0
votes
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 ...
2
votes
0answers
28 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
29 views

Writing a new library that uses I2C channels [closed]

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 ...

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