Questions tagged [pi-3]

For questions that apply specifically to the Raspberry Pi 3 and not other/all models.

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Can i use a I2C PWM expander as a Digital output module?

i want to use a "IS31FL3731" I2C PWM expander to dim my LED Strip. This expander does have a lot of PWM outputs and i also need a lot of Digital outputs. So is it possible to use a few PWM ...
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Screen resolution on RPI3B+ too small when connected with Teamviewer + crashes

I am running 3xRPI4 and 1xRPI3B+ with the bullseye release from 30.10.2021 and after the update function from raspi-config. The RPI4 work fine, however, I cannot fix the small screen resolution of the ...
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15 views

multiple reverse SSH tunnel with same port on same server

I'm looking for a solution for connecting to multiple remote computers through reverse SSH tunnels from one computer/software on the same port. I have remote1 and remote2 where I cannot open network ...
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1answer
128 views

Booting raspberry pi 3 model b (not b+) out of the box without SD card

My raspberry pi 3 B's sd card slot broke. Is there a way to boot it using USB or Ethernet? Are there any settings I can apply to a fresh install of Raspberry Pi OS on a USB drive? The board's version ...
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1answer
19 views

pigpio Not allowing simultaneous waveforms on separate GPIOs

I am trying to send a set of pulses equally spaced to 4 stepper motors drivers (on different GPIOs) at the same time. These pulses I am wanting to be around 10 microseconds in width so more precise ...
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30 views

llvm version 11 and librosa error

Best regards i need to download librosa to raspberry pi so first of all i downloaded virtualenv and created environment and installed llvm with: sudo apt-get install llvm pip3 install llvmlite==0.37 ...
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1answer
18 views

I2C Interfacing with HIH6130

I'm trying to read data from sparkfun's HIH6130 Breakout for measuring humidity and temp data. Following this instructable (though without the i2c shield for the pi), the provided python code just ...
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2answers
354 views

Possible to Power RPi 3 & Touchscreen with Old Intercom Wires?

So this question could be a dumb one, as I have little to no experience with electricity. Anyways, here it is: My current project is using the RPi Official Touchscreen (7 inches), along with a RPi3 ...
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1answer
130 views

Microstax GPS - fine then garble

I've bought a Microstax GPS unit which I'm using directly on my RPi 3 (no Microstax headerboard). I've got the unit connected correctly though I'm strangely seeing a few seconds of correctly formatted ...
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1answer
42 views

IP Cam system suggestions

Though id ask here as it seems like a pool of knowledge Im wanting to record RTSP streams on my raspberry pi possibly combining my OMV instance, not sure the best solution/setup hence the post. I want ...
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1answer
621 views

GPIO Input Not Detected Within While Loop

Hi I'm having a problem with trying to detect GPIO input on a PIN within a while loop. Turnstile B Entry button is what I am troubleshooting the statement if tsB_entry_button == False: import RPi....
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4answers
11k views

Win32diskImager "Not enough space on disk Size: 62652416 sectors. Available: 62333952"

I've been careful to buy the same Samsung 32GB SD cards for all my Rpi3 systems to avoid the dreaded Win32diskImager size error. All of the Rpi images are stored safely in the NAS as .img files. ...
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1answer
379 views

How do you disable keyboards (or lock the video player) in Kodi?

Simple question: how do you disable all keyboards in Kodi? I tried looking for the keymaps folder so I can edit the keyboards.xml file but can't seem to find it. If there is a way to master lock (...
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1answer
24 views

Raspberry PI 3 mariaDB and python issue with expanding columns

I am having an issue that I don't really have programming experience to resolve. I have an application that deploys an SQL table that may have more or less columns depending on user input. I am ...
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1answer
2k views

My Access Point isn't working, could I get some help?

I went through a tutorial on thepi.io. However, my AP isn't showing up or not working. I ran the: sudo hostapd /etc/hostapd/hostapd.conf then it came back as: failed to create interface ...
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6 views

Measuring Hardware Performance Counters with perf_event_open on RPi 3

I am under RPi 3, Linux Rpi 4.9.80-v7+, perf version 4.9.82, and I have a deterministic code with a fixed input data, that runs a sort algorithm. I need to capture the runtime information of this code ...
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2answers
1k views

Connecting and reading multiple MPU 6050 sensors on raspberry b+ 3 model

Allow me to start by saying I'm an absolute beginner when it comes to raspberry pi . I've recently purchased a raspberry pi b+ 3 model ,two mpu 6050 sensors (which I had to solder) and connected each ...
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1answer
7k views

Can't get OMXPlayer to display video

I am watching a tutorial on YouTube and literally following everything that he is doing.... I have recorded a video and now trying to play it using the omxplayer When i go to play my video using the ...
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1answer
736 views

UDEV issue.. USB triggers script but USB doesn't mount

So I have the UDEV rule: ACTION=="add", SUBSYSTEMS=="block", KERNEL=="sd[a-z]1", RUN+="/usr/local/bin/script.sh" This is saved in /etc/udev/rules.d/10-usb.rules I want it to trigger the script ...
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1answer
29 views

Do an action while a button is pressed in RPi.GPIO using add_event_detect

I have made a circuit in which a buzzer buzzes when a button is pressed. It works fine if I use a while loop and continuously detect button state. AFAIK, this is not an efficient way and I should use ...
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20 views

What does cmd = 0x84 does in ADS7830 ADC

What does cmd=0x84 do in ADS7830 ADC. Its binary value is 10000100 class ADS7830(ADCDevice): def __init__(self): super(ADS7830, self).__init__() self.cmd = 0x84 self....
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2answers
25 views

I am currently doing the 'Build a LAMP website' project and mousepad is not working

I am a newbie to Raspberry pi and I am unable to continue, I am currently at: https://projects.raspberrypi.org/en/projects/lamp-web-server-with-wordpress/2 and in need to use the following command:'...
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1answer
3k views

How do I set up live Twitch streaming from RetroArch on a Pi 3?

I have been tinkering with Raspberry Pi's for a few years now and have some experience with installs, command line and using SSH, etc. I currently have Pi 3 with Retropie 1.6.3 installed and I can SSH ...
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1answer
37k views

Bluetooth import for Python Raspberry Pi 3

I have successfully connected my cell phone to the Raspberry Pi's onboard bluetooth. I know the Bluetooth works, but I cannot get import bluetooth to work properly. I get this error when I run the ...
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1answer
99 views

Fail to detect SPS30 particle sensor with I2C on Pi 3B

I have connected a number of I2C sensors (BME280 temperature, humidity pressure sensor, a TSL2561 light sensor and MLX90614 IR thermometer) to a Raspberry Pi 3 and they work fine. I am now trying to ...
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1answer
1k views

Run Node.js application while booting in Raspberry Pi [duplicate]

I have to run a Node.js application while reboot in Raspberry Pi.The application uses WiFi and BLE on-board of Raspberry Pi. I have tried out the below solutions: 1.Copied my Node.js application in ...
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1answer
1k views

RPi 3 B with Raspbian, LibreELEC and RetroPie?

Can anyone tell me how to install Raspbian, RetroPie and LibreELEC on the same SDcard. I just bought a Raspberry Pi 3 Model B. I downloaded NOOBS and could only see, even with wired connection to the ...
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1answer
685 views

Adding gcc compiler to Poky image for raspberry Pi

I am using raspberry Pi 3 running a poky image built using the Yocto project. Is there any possible solution to add gcc compiler to the image? I found the cross-compilation very complicated and ...
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1answer
260 views

How can I create a bridge to eth0 with the following network configuration?

I followed this tutorial so I have a network with two wireless interfaces, wlan0 working as a access point and wlan1 working as a client from another router. How can I bridge wlan1 to eth0 without ...
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16 views

Does 2x singstar microphone with usb adapter work with raspberry pi 3?

I am planning to make my raspberry pi into a karaoke machine using probably either ultrastar or pikaraoke. There is 2x singstar microphones with usb adapter (used) selling in game shop near my place. ...
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1answer
202 views

How can I use the free version of Qt to create a GUI for the Raspberry Pi?

I am working on a project that requires high-medium quality GUI. I am thinking of cross compiling from Windows to Raspberry Pi or from Ubuntu to Raspberry Pi. Also, I do not know which one of those ...
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1answer
350 views

Problem installing Bluetooth Dongle on Raspberry Pi 3 running Windows 10 IOT Core

I recently bought the plugable Bluetooth USB adapter usb-bt4le and I want to use it with my RPi3. I have windows 10 core IoT installed on the RPi. I have disabled the on-board bluetooth and I wish to ...
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1answer
272 views

USB soundcard works for audio test but not for mp3

I've been struggling to get my USB sound card to work with my Raspberry Pi 3. After following some suggestions I have had limited success. On startup if I run speaker-test -c2 -twav this test ...
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22 views

Raspberry as an I2C MASTER [duplicate]

This is the link I am using to make Raspberry PI as an I2C slave, I see it uses the bscXfer which is OS timing independent. This is cool. Raspberry as an I2C SLAVE Similarly, I want to make raspberry ...
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2answers
2k views

KeDei 3.5 SPI TFT LCD with Retropie

I am working on an on the go Retro-pie system. I needed a screen to go onto it so I picked up a KeDei 3.5 inch TFT LCD. However when I received it, I found out that it only works with a specific image ...
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0answers
5 views

MoemManager.service stops booting my Raspberry Pi

My Raspberry Pi 3 just stop while boot with message in loft bottom conner ModemManager.service. How to make start my Pi again?
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1answer
222 views

Not able to pair Raspberry Pi3 and iBeacon using Bluetooth

In my current project, I am working with iBeacon in the area of IoT. Basically iBeacon works on Bluetooth wireless technology. I am using Raspberry Pi 3 (with in-built WiFi and Bluetooth). Pi 3 ...
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1answer
659 views

Monitor Displaying "No Signal" with RetroPie at Powerup

I'm in the process of building a game console using RetroPie and a Raspberry Pi 3. I'm connecting the Pi to a monitor via HDMI, and I'm powering both using a power strip with an on/off switch, to ...
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1answer
538 views

Serial commands over Ethernet RPi 3b

I am trying to send LinBus protocol serial commands over the ethernet port of my Raspberry pi to a linear actuator connected on the other end via ethernet. Currently, I am using pyserial script to ...
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1answer
370 views

Wi-Fi transfers hang on Raspberry Pi 3

I was trying to transfer a 50 MB file to my Raspberry Pi 3 via samba and I noticed that after few seconds the transfer slows down until it stops, same thing via scp. It starts but after few seconds (5-...
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1answer
3k views

(Error trying to run qjackctl) libEGL warning: DRI2: failed to authenticate qt5ct: using qt5ct plugin

Running Raspbian installed with NOOBS. qjackctl is installed with all its dependencies using Synaptic. Just trying to run Guitarix on my Pi3 B+. I tried following the instructions in this solution, ...
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1answer
49 views

Unable to create a switch on/off functionality in RasberryPi

I am trying to create a program which which switch an LED ON or OFF when a switch is pressed. The following is the circuit diagram The python code is import RPi.GPIO as GPIO is_lamp_on = False try: ...
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1answer
703 views

How to connect GSM module to Raspberry PI3 and also using Bluetooth of Raspberry PI3

I want to use Bluetooth of Raspberry Pi3 and also I want to Connect GSM module sim800l to Raspberry Pi3 ,in this instruction Bluetooth will be disable , what is the the best way to use both of them? ...
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2answers
130 views

raspberry pi 3 with GPS HAT, status code (data is void)

Hello I'm new in python and raspberry, today I try to run a script take in 'https://www.rhydolabz.com/wiki/?p=18639#comment-47045' But I don't have a valid data in my status code. The code : #...
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0answers
30 views

Raspberry Pi 3B v1.0 How many pieces made?

I would like to ask if someone knows a bit more about this version. For example, how many pieces were there made of v1.0? You can see that on the PCB there is an alien from space invaders. Why? Is ...
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2answers
651 views

Could a RPI 3B+ running Android Things support touch-display and display module with different views?

We are currently working on a project with a Raspberry Pi 3 B that will run Android Things NIH40K, 0.4.1-devpreview, Jun 15, 2017. As it runs AT I would like to connect two separate displays, one ...
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1answer
35 views

Raspberry Pi, how can i turn bluetooth on and off over Python script?

i want to play either a sound, which is saved on my raspberry pi as a MP3 file or send a song from my phone over bluetooth to my Pi. So i found out, that if i run a song over bluetooth and play one ...
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1answer
115 views

Raspberry Pi Live Stream + Image Capture

I'm wanting to set up a camera using a PI. This camera will capture images of vehicle registration plates when motion is detected, to be checked and validated. Is it possible to both live stream and ...
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1answer
484 views

Why is my RPi freezing of its own accord?

I own a RPi 3 Model B, which does a very good job of freezing of its own accord, even when not much activity is being done. I mean, I can still move the mouse, but it stays in its last frame and I ...
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1answer
302 views

Raspberry Pi 3 Model B will not read SD Card

I have a new Raspberry Pi 3 and wanted to download OMV onto it, however, I can not get the Pi to read my SD card. I have two different SD cards that I have tried but the ACT light never turns on. ...

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