Questions tagged [pi-3b+]

Use for questions specific to the Raspberry Pi 3 Model B+

319 questions with no upvoted or accepted answers
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412 views

Trying to run a C# Discord Bot on Raspberry Pi 3 Model B+ with Windows 10 IoT

I have developed, in Visual Studio 2015, a C# Console Application which uses the Discord.Net API. It works great running on my PC, which has Windows 10, however I am looking to run the program 24/7 on ...
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0answers
43 views

Rpi3 WIFI AP go down after some time of innactivity?

I have setup my Rpi 3 as wifi access point and it was working for a long time. But some day, wifi stop working unexpectedly and i was no idea that what was the problem. It means wifi access point is ...
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2answers
350 views

Can't blink a LED using SPI interface on Raspberry Pi v3

As a part of my PoC project, I'm using single 5050 LED made by Adafruit. I wired it like this (LED - RPi): DI (Data Input) - SPI0 MOSI CI (Clock Input) - SPI0 SCLK GND (Ground) - GND VCC (5V) - 5V ...
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0answers
61 views

Relay for controlling backlight of touchscreen not reacting after a while

I connected my rpi3 to a 10" touchscreen. I connected the backlight of the touchscreen to a relay which I'm controlling via the GPIO pins. This is working fine for the first couple of minutes. But ...
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0answers
400 views

How to upgrade other major OS to work on 3 B+

Scenario I am yet another victim of thinking my rpi 3 B+ was broken when it wouldn't boot up. It turns out that the 3 B+ is looking for some special boot instructions. I currently have: Ubuntu Mate ...
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0answers
256 views

Raspberry Pi 3B+ Ethenet socket Orange LED flashing

I have this weird issue with my Raspberry Pi 3B+ where during normal operation, e.g. while running sudo apt update && sudo apt upgrade the command errors out saying it couldn't connect to the ...
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0answers
21 views

Why do fbedev OGLES Draw Calls takes 30+us each?

When operating with the framebuffer OpenGL Drivers on my HTC Vive, performance is incredibly good on my Raspberry Pi 3B+ EXCEPT that every single draw call takes anywhere from 30-50us, regardless of ...
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0answers
2k views

Slow Refresh Rate on WaveShare 3.5" LCD (B) on RPi 3 B+

I've flashed StickyFingers-Kali-Pi-armhf-180607 to my Raspberry Pi 3 B+ with Waveshare 3.5" LCD (B). I update and configure the unit for my specific screen using the guide's instructions, entering the ...
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2answers
6k views

How to improve wireless throughput on RPi 3 b+ in AP mode?

I've upgraded from 3 to 3 b+ in hopes of improving throughput on wireless network (using built-in wireless chip as AP and wired connection on the other end). I've configured it to work in 802.11ac ...
1
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1answer
554 views

Wifi conflicts with bluetooth: impossible to use BT mouse + keyboard with wifi turned on

2 years later, I still have the same issue. In Raspbian, using the built-in Bluetooth controller: Connect a BT mouse Connect a BT keyboard Turn on the built-in Wifi and connect to a network ...
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0answers
34 views

A weird bug in Raspian

I just updated my Raspberry pi 3B+, after the reboot all windows get their “top” cut of like this: And everytime the cursor is outside the current window it appears as an “x”, I hope you can help me ...
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0answers
1k views

Can't Login to Pi0 console from Pi3 B+ via UART Serial USB-TTY Adapter

I am new to RPi's so bear with me please: I am trying to log in to the Pi0 console via sudo screen /dev/ttyUSB0 115200 but I just get a blank screen. Ouput of dmesg | grep tty: [ 0.000000] ...
1
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1answer
313 views

Can't get past rainbow screen with Kali install process

I am new (to all of this, Pis, Linux, etc). This is my first real attempt at working directly with hardware as well. I needed a new project so I got a Canakit started set which came with a Raspi 3B+,...
1
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1answer
863 views

Raspberry Pi Internet Issues

On my raspberry Pi 3B, attempting to access the internet for downloads fails. Anything that uses it (chromium, apt-get, etc) does not work, giving errors such as DNS server not found, or just hanging. ...
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0answers
602 views

Issue on Display Resolution

I am unable to set the correct screen resolution when trying to connect TV/Monitor(via HDMI) with RaspberryPi3 at runtime, the following are the steps: Disconnect TV if already connected Boot ...
1
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2answers
4k views

Raspberry Pi 3 B+ no wireless interfaces found

I can connect to Wi-Fi when I use RPi 3B but when I boot the system with 3B+ it doesn't connect to Wi-Fi automatically and when I click on the top right to connect it to Wi-Fi, I see the error: no ...
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0answers
16 views

'No wlan0 interface found' on Raspberry Pi 3B+ Running Retropie

My WiFi has stopped working on my Raspberry Pi 3B+ running Retropie. When I enter the WiFi settings and then select 'Connect to WiFi network' I get this: No wlan0 interface detected I have tried ...
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1answer
28 views

How to publish results on the Web from local MQTT non-Internet network?

I'm making a project where I have a local no-Internet MQTT network (scheme below). Devices (except for RPi 3B+) needs to work outside so I can't provide them Internet access. The purpose of RPi 3B+ ...
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0answers
18 views

Insert real-time sensor data without using a csv file and display real-time accuracy

Hello guys im having a problem about inserting real-time data directly without using a csv file and dislay real-time accuracy of the data Here's the Program : import os import time from numpy import ...
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0answers
33 views

Connecting circuit with raspberry pi

I have a dedicated circuit that has a proximity sensor and every time it detects an object the motor is rotated. I want to connect my Raspberry Pi to it and control the motor as well as the proximity ...
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0answers
33 views

OpenCV2 ---> OpenCV4

I have been working on a project from github, https://github.com/twilio/wireless-security-camera, that utilizes OpenCV. Now I haven't played much with OpenCV so this is trial and error on my part. ...
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0answers
67 views

ValueError: Could not find a format to read the specified file in mode 'i'

I am trying to run this code from here on RaspberryPi 3 B+: https://www.datacamp.com/community/tutorials/tensorflow-tutorial For a reason I cannot understand it throws this error: "Could not find ...
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1answer
20 views

Unable to expand SD Card for RT-Linux Image created using Yocto

I am creating a minimal image for my Raspberry Pi 3b+ with an Preemptive RT Linux Kernel using Yocto Project's warrior branch. I was able to create a base image for the same (bitbake -k core-image-...
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0answers
19 views

ALSA lib bluealsa-pcm.c:219:(io_thread) PCM FIFO write error: Broken pipe aplay: pcm_write:2053: write error: No such device

Bluetooth Error Device: Rpi 2 2014 Model B Ver 1.1 also Rpi 3 Bluetooth Headset JBL Everest Elite 750NC Bluetooth Adapter Panda Wireless PBU20 command line: aplay -D bluealsa:DEV=C8:DF:84:20:...
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0answers
26 views

Socket communication between Pi and Arduino

I'm a beginner with Raspi and I would appreciate your advice and input on a project I'm working on. Hardware: Raspi 3B+ with latest Rasbian, Arduino MKR 1000 I have a bunch of sensors attached to ...
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0answers
25 views

Unable to SSH into RPi using Public/Private keys “Server refused our key”

I am using Windows 10 and Raspbian Buster on a Raspberry Pi 3B+, and am unable to use keys to login to the Pi. I get the error "Server refused our key" every time. I have created public and private ...
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0answers
19 views

How to add the hfp/hsp profile based speaker for input (speech recognition)and output simultaneously?

I m trying to make kinda type of assistant out of my raspberry pi 3 b+ model and so bought this Speaker . So that I can use it to give audio input as well as get the output at the same time . But I'm ...
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0answers
22 views

Bridge between Twilio API/phone line and closed circuit 20v intercom

Question about how to achieve the below using a Raspberry PI. What hardware would i need to buy and is the below possible? I have a closed circuit intercom system in my house. This is a video ...
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0answers
27 views

Pi stopped booting after loosing power - can it be recovered

I have had a pi running as a bluetooth link to a meat curing machine and it's been awesome! The thing has run without issues for like 45 days. Well today I decided to move it to a new room and so I ...
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0answers
33 views

Does Raspberry Pi 3 B+ support the RGB-D Sensor?

Currently I am using Pi Camera which capture the image. But my objective is : To find the nearest object from the camera image. But Image Contains multiple objects shown below RGB-D can capture ...
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0answers
10 views

RPi alsaaudio.PCM works good for Python2.7.16 but not for Python3.7.3

I am new to audio related programming in RPi. Following code works well and playing sound from a wav file in Python2. import alsaaudio as aa output = aa.PCM(type=aa.PCM_PLAYBACK, mode=aa.PCM_NORMAL, ...
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0answers
43 views

Adafruit Neopixel 60LED RGBW Strip showing up with wrong RGB color

We are currently using the Adafruit Neopixel RGBW 60 pixel LED strip with our project, and are currently trying to control it. The strip, however, is displaying incorrect colors when trying to ...
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0answers
38 views

How to change the decimal separator in C# for raspberry pi with mono?

I'm working on a C# application that I run on raspberry pi with mono. I would like to convert a double A = 0.05 to a double B = 0,05. I succesfully did it on my computer, I changed my Number Decimal ...
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0answers
22 views

Error E405 while trying to install discord.js with npm

I'm trying to host a Discord bot in my RPI3B+, but the required node.js package discord.js always fails to install. I've tried purging both NPM and Node.js, and i have upgraded my Raspbian using sudo ...
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0answers
46 views

Can't connect waveshare hat to raspberry pi 3b via python3 to obtain gps

I'm stuck with my waveshare hat and it would be cool if you could help me. I would like to obtain the gps location. I'm a python beginner and tried to use some already written code from this websites:...
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0answers
22 views

Why i can't write OBD 2 value of a car to firebase?

Hello guys im having a problem sending a value to firebase here's the code that i use import obd connection = obd.OBD("/dev/ttyAMA0") while True: cmd1 = obd.commands.RPM response1 = ...
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0answers
47 views

How to convert hexadecimal value of OBD(On-Board Diagnostic) to a readable value

Hello guys im having a problem about the conversion of hexadecimal of obd2 of a car to readable value like vehicle speed which is in 'km/h' here's the code that i use import serial ser = serial....
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0answers
14 views

Sending command to the motor via python code while connecting by VNC wiever

We are making a project. Our python codes are in the raspberry. When raspberry is connected to the monitor via HDMI, we can directly give a command to our motors by using our python code and it works ...
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0answers
27 views

Pi does not find NOOBS files

My Raspberry Pi is not finding the NOOBS files. I have tried to make the SD card bootable, but it did not get me as far as if I just unzipped NOOBS on to the Sd card. The screen is blank. Any ...
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0answers
40 views

Using expect for authentication

I have installed the Nordvpn linux app After using it for some days I have realised I need to login again sometimes. Login is done by the command and the response is: root@root:~ $ nordvpn login ...
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0answers
15 views

Raspberry Pi3 B+ Windows IoT does not boot

I am using Raspberry Pi3 Model B+ embedded card and I am trying to flash Windows IoT core. I had some issues with it while it does not boot. I followed the steps described here and used RaspberryPi ...
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0answers
15 views

Mini usb 2.0 microphone not detected

I googled but didnt find an answer. I bought usb microphone like this: https://www.ebay.com/itm/USB-2-0-Mini-Mikrofon-Stecker-f-r-Windows-PC-Mac-Linux-Raspberry-Pi-Mikrophon/112352215940?pageci=...
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0answers
32 views

Rainbow screen issue with raspberry pi 3 model b+

I am using Raspberry pi 3 Model B+ and using Ubuntu Mate operating system not Raspbian Os I am also using raspberry pi 3 supportable original charger of 5.1V 2.5A. still i am facing the same rainbow ...
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0answers
45 views

How to create a person or head (not face) detection using open CV that are not too slow when run in Raspberry Pi 3B+?

Hello guys my problem is creating a program that can detect the head(not face) or human detection for my project One of the program that i see is too slow for raspberry pi 3B+ which is this : https:/...
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0answers
77 views

Raspberry Pi 3B+ successfully connect and pair but can't receive data from OBD II

Hello guys my problem is i cant recieve any data from OBD II to Raspberry Pi 3B+ Here the materials that i use: Raspberry pi 3B+ ELM327 -> OBD II Operating System of Raspberry Pi -> https://medium....
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0answers
70 views

How do I read all registers of an INA219 sensor via SMBus in Python at once?

I'm trying to Connect my Raspberry Pi 3B+ with a Raspbian 10 to an INA219 current sensor (that also returns voltage and a premultiplied power) via SMBus in Python 3.7. After destroying one Raspberry ...
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0answers
29 views

Timed trigger for GPIO input

I'm running a raspberry pi system that records fish as they swim passed an IR break beam sensor at a fish ladder. So far the system works well but I'm trying to cut down some of the false triggers. ...
0
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1answer
48 views

Using pigpios waves and audio output

I am using a Raspberry Pi 3 B+. I want to play audio through the 3.5mm jack and use PWM at the same time or successively to simulate a IR-Remote. I know that you can't use the hardware PWM while ...
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0answers
18 views

Restarting another python script that is running from a running python script

I know that os.execl(sys.executable, sys.executable, *sys.argv) restarts the current running python script. But what if I have two scripts that are running and under certain conditions, the main ...
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0answers
92 views

RF ISM 433MHz Module Using Rpi RadioHead Low Speed Problem

I have a rf module 433Mhz which consist of a transmitter and a receiver, I used virtualwire and Radiohead library in Arduino and it's pretty fast. When I shifted that to rpi there were no dedicated ...

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