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Questions tagged [raspberry-pi4]

PROGRAMMING QUESTIONS ONLY. Questions about general use should be asked on https://raspberrypi.stackexchange.com/

The Raspberry Pi 4B comes in three different models, the only difference being the amount of SDRAM (1GB, 2GB or 4GB).
The most notable spec improvements, compared to older models are:

  • 1.5GHz 64-bit quad-core Cortex-A72 ARM v8 CPU
  • 1GB, 2GB or 4GB LPDDR4-3200 SDRAM (depending on model)
  • Gigabit Ethernet
  • 2.4 / 5GHz 802.11ac Wireless LAN
  • Bluetooth 5.0 BLE
  • 2x USB 2.0, 2x USB 3.0
  • 2x micro HDMI ports (both support up to 4kp60)

Visit Raspberrypi-Stackexchange for general questions about the Raspberry Pi.
Also useful might be the original raspberry-pi tag info.

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Failed to send sms through wvdial (No Carrier! Trying again)

Problem pi@raspberrypi:/~ $ sudo wvdial --> WvDial: Internet dialer version 1.61 --> Initializing modem. --> Sending: ATZ ATZ OK --> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 ATQ0 V1 E1 S0=0 &C1 &D2 OK --> Modem…
H. Pardess
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Failed to Sending SMS with gammu (Error 500)

Problem: pi@raspberrypi:~ $ echo "Test" | sudo gammu sendsms TEXT +937******** If you want break, press Ctrl+C... Sending SMS 1/1....waiting for network answer..error 500, message reference=-1 Unknown error. or even I run the…
H. Pardess
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Tensorflow won't download on my Raspberry Pi 4 and keep getting the same error message

I am trying to download TensorFlow on my raspberry pi 4 but I keep getting the error that it "could not find a version that satisfies the requirement tensorflow == 1.11. I tried doing "sudo apt install libatlas-base-dev" but even still I get the…
rb_9999
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Raspberry Pi 4 command to open TCP sockets

I have a Meca500 (R3) robot. My robot doesn't have wireless function, I use cable to connect the robot to my laptop and use a software to control it, I created an IP address for the robot. Now I want to use a Raspberry Pi to control the robot. What…
Alyssa
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Integrating rasberry pi with google cloud AutoML and/or Vision API

I am basically working on a smart trashbin project. I want a ultrasonic sensor to sense that someone has put trash in... this will then trigger the rasberry pi camera to take a picture. The problem I am having is with this next part: How do I get…
kanishk
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/usr/local/bin/chromedriver: cannot execute binary file: Exec format error when tring to use ChromeDriver with Selenium to work on a Raspberry Pi 4?

I'm stuck trying to get my Selenium script running on my raspberry Pi 4 running with raspbian. The script is running fine on my mac. The problem is with setting up the webdriver. I tried installing several webdrivers, including chromedriver,…
Tobias Grunwald
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Opening any notebook gives "500 internal server error" in Raspberry Pi 4. How to resolve it?

I installed Jupyter Notebook on Pi 4 intially it worked properly but now its giving 500: INTERNAL SERVER ERROR. So, I tried to install with conda and, i install Miniconda. when I try to install Notebook with conda it gives fillowing…
Sadhana Singh
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Visual Studio C# Project using Microsoft.CongnitiveServices.Speech doesnt work on Raspberry pi 4 with Raspbian, can someone help me?

some time ago I worte a Text to Speech and Speech to Text bot with Visual Studio. It works fine on my Windows PC. I decided to bring this software to a Raspberry Pi 4 with Raspbian, but when I tried loading my Application this Error Popped…
feno2701
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What are the prerequisites for jitsi-meet?

I currently try to install jitsi-meet on a raspberry but don't succeed. I tried to use Rasperian and Ubuntu Server as base OS. I installed Java and nginx as prerequisites (as noted here). But I still always get to following…
rdmueller
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Raspberry Pi 4 doesn't boot when attaching camera

I am having problem connecting the camera module to my Raspberry Pi 4. The PI is working just fine, but when I attach the camera to the module, it just doesn't boot. What might be causing this?
Lima
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How do I open 2 chromium windows from terminal?

I would like to open 2 chromium instances from terminal but this does not work. I'm currently using raspberry chromium-browser --window-position=0,0 chromium-browser --window-position=1920,0
Jackal
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INFERENCE_ENGINE_LIB not set error in Cmake

I'm trying to run the gender_age sample (https://github.com/movidius/ncappzoo/tree/master/apps/gender_age) in my raspberry pi 4 with intel movidius Myriad X VPU and I have an error I follow the tutorial…
Victor Morgant
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What is causing the int not subscriptable error in this code?

I'm setting up my Christmas village early so I can make changes to it this year. I'm trying to get an LED strip and a string of LED lights to fade at varying speeds at the same time. the code works for a minute then gives me an "int not…
Jamie
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How can I set ip address of raspberry-pi4 in nodejs

I try to set fixed IP on a raspberry pi 4 with node js and if I run the following script with sudo var networkconfig = require('network-config'); var my_net_cfg = { ip: '192.168.1.15', netmask: '255.255.255.0', gateway:…
Eugen T
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why am i having this python import error when ive already installed the module?

Right so I having been trying to set up my raspberry pi 4 for a while now because I want to run a bot kind of system on it and I know all my code works and stuff but when I try and run the program on my pi it says it doesn't have modules I need,…
user12127292
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