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Questions tagged [pi-3b+]

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

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votes
2answers
303 views

Setting up Bridged VPN using: RPi 3G Hotspot router + openvpn client to connect to home RPi OpenVPN server

I have a Raspberry Pi 3B+ which is working as a hotspot using a Hologram Nova usb ppp0 device where it receives Internet from and routes the internet through WiFi and Ethernet. This Hologram usb ppp0 ...
2
votes
3answers
48 views

GPIO vs I2C SMBUS2

This example scans for any I2C slave address current on the I2C bus. (I am using a RPi 3B+ with raspbian buster from september release) Script trial_smbus.py: from smbus2 import SMBus channel = 1 ...
2
votes
1answer
310 views

DS18B20 Temperature Sensor - Rpi 3/4 Driver, Wiring, Detection, and Python Programming

I am new in raspberry pi. In my research project, I would like to monitor ground temperature at 60 points. My team decided to set a monitoring system using raspberry pi. As a preliminary test, I ...
0
votes
1answer
24 views

4 Displays with diffrent output using Raspberry Pis

Core Problem: I need 4 displays to show diffrent output (simple images) For this kind of "Video Wall" problem, most solutions recommend one RPi for each display/monitor in a master/slave ...
0
votes
1answer
76 views
+50

Low wifi speed even with 5Ghz wifi adapter

My internet download speed from my D-Link wifi router is 24 M bits/s From ethernet the download speed is 50 Mbits/s I am using Tp-link AC600 Archer T2U Plus wifi adapter with Rapberry pi 3B+ I ...
0
votes
1answer
202 views

use raspberry 3+ and PN532 Itead with i2c

nfc-scan-device uses libnfc 1.7.1 1 NFC device found: error libnfc.bus.i2c error : worte only -1bytes (10 expected) error libnfc.driver.pn532_i2c Unable to transmit data(TX) pn53x check_communication:...
1
vote
0answers
43 views

Raspberry Pi 3 B+ (Buster) can't control Dynamixel AX-12A with Raspberry Pi 3 B+ (Buster) with half duplex communication

I have a project to make mobile robot with Dynamixel AX-12A as the wheel, so i changes the AX-12A to Wheel Mode with CM-530 and it works well. I follow the guide from http://www.oppedijk.com/robotics/...
0
votes
0answers
9 views

Rainbow screen issue with raspberry pi 3 model b+

I am using Raspberry pi 3 Model B+ and using Ubuntu Mate operating system. I am also using raspberry pi 3 supportable original charger of 5.1V 2.5A. still i am facing the same rainbow screen issue on ...
0
votes
1answer
31 views

Different Boot behavior for cloned Pi

I am running a python script on my Pi 3 B+ and registered it in a crontab @reboot so it is executed when booting the system. On my development Pi everything works fine, but when I clone the SD-Card ...
1
vote
1answer
167 views

How to use Ethernet and Wifi on Pi3b+ and Raspbian buster

Yes, I am aware that similar questions have been asked before on this StackExchange but almost all of those are old and don't seem to be working for me. After googling around I found that things have ...
1
vote
1answer
32 views

howto config network interfaces in Raspbian after config files change

I cannot find a way to start network interfaces with proper config after I changed config files (eg dhcpcd.conf). The only way I found to take the new config into account is to reboot. There must be ...
0
votes
0answers
24 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:/...
0
votes
0answers
35 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....
0
votes
1answer
2k views

Install EPSON TM-T88V printer with CUPS in Raspberry pi 3

I am trying to install the EPSON TM-T88V printer with CUPS in Raspberry pi 3, but I can not make prints, the status of the printer says "inactive". I tried the PPD file "tm-ba-thermal-rastertotmt.ppd" ...
0
votes
1answer
190 views

How to set up wifi with ubuntu 18.04.2?

I'm trying to use ubuntu OS on my raspberry pi 3 B+. I have formatted my microSD card to FAT32 and copied the ubuntu-18.04.2-preinstalled-server-arm64+raspi3.img. I am able to have the OS working. ...
1
vote
2answers
47 views

How to send email from Pi using python without smtplib?

I am new in Raspberry Pi and I am trying to send mails without using SMTP. I had used SMTP before and it worked perfectly fine. But recently the same code is not working, though it compiles without ...
0
votes
1answer
31 views

ImportError:python2.7/dist-packages/RPIO-2.0: undefined symbol: makedev

I have a problem with RPIO. I am running a face recognition using OpenCV python on Raspberry Pi 3B+. pi@raspberrypi:~/facerec-pi/code $ sudo python capture-positives.py Tradeback (most recent ...
0
votes
0answers
40 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 ...
2
votes
2answers
38 views

Raspberry Pi getting burningly hot and not displaying

I tried turning on my raspberry pi 3 b+ and it wouldn't show anything to my TV, the entire Pi ( mainly around the SD card ) was so hot I could barely touch it. Bare in mind the pi was only on for ...
1
vote
1answer
470 views

Problem autostarting pigpiod

On my Pi3B+ I had pigpiod configured to run on boot and I can successfully run compiled c programs; specifically DHTXXD.c which contains:- /* DHTXXD.c 2016-02-16 Public Domain */ #include <stdio....
1
vote
2answers
46 views

Raspberry Pi 3 B+ won't boot up after 1 week of use

So I just got a new raspberry pi 3 b+ earlier this week by RS Components and I got it working on the first day. A couple days I shut it down and later when I tried to turn it back on, it didn't all it ...
1
vote
0answers
36 views

Raspberry pi with 1.3" oled i2c screen

I'm currently trying to use this 1.3" i2c oled screen with the Adafruit oled i2c library, but I'm currently getting this issue: I have made sure to run the setup.py and all of the code is the same. ...
2
votes
0answers
37 views

How to split a display into many and access all the screen

I'm trying to split the screen in raspberry-pi. and access each screen for each display I want the multiple layer in a single screen. Eg. my output screen resolution is 1024x720 in that i have to ...
7
votes
1answer
5k views

How to setup the Raspberry Pi 3 onboard WiFi for Ubuntu Server 18.04 with netplan?

How to setup of Raspberry Pi 3 B+ onboard WiFi for Ubuntu Server 18.04? In particular, with netplan? This is a clean install of the Ubuntu Server 18.04 image for Raspberry Pi 3. File: ubuntu-18.04.2-...
1
vote
2answers
20 views

Cannot connect to Xserver during CLI boot

so i want to autorun my python script after boot in a CLI boot however it seems that its giving me an error "Cannot connect to Xserver". My python script uses a camera i used crontab to autorun my ...
-2
votes
0answers
26 views

Why can't I get to the log-in screen?

An error just comes up stating that the password and username is default and needs to be updated. We can't make it into the initial setup. There's no space to type. What do I do?
2
votes
1answer
1k views

OpenVPN on Raspberry Pi stopped working (no tun0)

I've been using a Raspberry Pi 3B (running Raspbian) with OpenVPN connected to a Portuguese IPVanish server for about a month now and everything has been great. In fact I've been amazed at the speeds ...
0
votes
1answer
41 views

Pi 3 B+ sudden audio failure

A few months ago I bought a RasPi 3 B+ to act as an overglorified doorbell using reed switches to tell the Pi to play a custom MP3 with the "Playsound" Module into the Company's PA system. It worked ...
1
vote
1answer
193 views

Cant install php

I'm kind of new to the linux os and I'm having trouble installing php. i needed a few tools for jasper which alwys show up in the error message. sudo apt-get install php -y Reading package ...
1
vote
1answer
990 views

Rpi3b+ to Rpi3b+ jtag/SWD connection and OpenOCD

I'd like to hook together two Raspberry pi 3b+ to use jtag/SWD with OpenOCD. I learned it can be done, but implementing it has proven challenging. I have two questions: How to connect the Rpi's. If I'...
-1
votes
1answer
28 views

After my script crashes, I can't run any more scripts, RP 3 Model B+

I am running a script that is probably crashing. When I run it, nothing seems to happen, so I hit Ctrl + Z to halt the program. But then I can't run any other script on the Raspberry Pi 3 Model B+. ...
44
votes
3answers
215k views

How do I make serial work on the Raspberry Pi3 (or later model)

My Pi3 serial console produces rubbish and fails to respond to the keyboard.
1
vote
1answer
44 views

When I make a clone of my SD, the resulting image has ethernet problems

First of all, I'm working with Ubuntu Server 18.04, on a Raspberry Pi 3b+. I'm running a server with Nodejs and MongoDB. Everything works perfect. The problem comes when I want to clone the SD into ...
1
vote
2answers
62 views

RPI Ethernet Gadget Intermediary Theory

I am brand new to these forums so I apologize if I posted this in the wrong place but I had an idea that originated when I heard about the RPI Zero's ability to act as a USB Gadget or HID Device and I ...
0
votes
2answers
197 views

Can't SSH Into Headless Raspberry Pi 3 B+

I have a Raspberry Pi 3 B+ and I'm trying to use it to run some servos. I'm brand new to the hardware and networking part of this setup - I only have experience with programming, but not this part. I ...
1
vote
1answer
35 views

RPI not booting, only red LED, not the SD card

My RPI 3B+ won't boot up anymore. Only the red LED lights up, the green one remains off. I use the official power supply, and my SD card is not corrupted. My SD card realy isn't the problem: I tried ...
0
votes
0answers
61 views

How to solve Raspberrypi 3 b+ stretch os Bluetooth host down error

how to solve this error : I am trying to builed a communication between raspberry pi and Hc05 Bluetooth module. But many cases I am getting host down error and not able to send data properly. below ...
0
votes
1answer
42 views

Raspberry Pi 3B+ input pin strange behavior

I have few switches connected to Raspberry Pi inputs. Internal pull up resistors are enabled. When I connect pin to the ground Raspberry Pi behave fine - pin state is low. However when I disconnect ...
0
votes
0answers
23 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. ...
2
votes
2answers
102 views

Adding I2C Bus with dtoverlay Does Not Show Up in i2cdetect

I am trying to set up multiple I2C interfaces on my pi. I have added the following lines to my /boot/config.txt and rebooted: dtoverlay=i2c-gpio,bus=4,i2c_gpio_delay_us=1,i2c_gpio_sda=29,...
3
votes
1answer
32 views

Won't mount btrfs file system unless you try to mount each disk separately

I have a pi 3b running raspbian 10, installed fresh this morning. All was going well until it ceased to be able to mount my btrfs volume. The error I get is as follows: mount: /drive: wrong fs type, ...
2
votes
1answer
163 views

Running a persistent node js server on boot and keeping the command line open

I know there are a lot of answers to this question but none have worked for me and I've been at it for something like six hours... Most of the answers also look like they are years out of date. I am ...
0
votes
1answer
15 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 ...
0
votes
1answer
62 views

Android cannot connect to Pi's wlan

I'm running a Node server on port :3000 and want to access it from other devices using Pi's wlan0 address. wlan0: 169.254.36.22 Accessing from Macbook works Accessing from iPhone works Accessing ...
0
votes
1answer
57 views

Raspberry pi + L298 H bridge motor speed reduced when battery circuit shows 50%

I made a raspberry pi car. The pi is powered by two 18650 (Breewell New Multipurpose Flat Top 18650 Battery 2000 mAh 3.7 Volt Lithium Genuine Rechargeable Battery -Pack of 2 https://www.amazon.in/dp/...
0
votes
0answers
12 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 ...
0
votes
0answers
43 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 ...
0
votes
1answer
899 views

Access point as a Wifi repeater for WPA2-Enterprise network

So this is a little bit of a random question but I'm attempting to follow this tutorial to set up a wifi repeater with my Raspberry Pi 3B+. I can get the Raspberry Pi to generate a network that can ...
0
votes
1answer
159 views

Can't use my Raspberry Pi 3 B+ for I2C in high speed mode

I've been trying to use a Raspberry Pi 3 B+ to get data from an accelerometer, namely an ADXL 357, via I2C but the problem is that the data rate is about 200 Hz or even less. I tried to set the ...
0
votes
1answer
191 views

RPI Motion service delay on restart

Is there any way to delay the start of the Motion service on RPI restart? I'm having an issue where v4l does not make it yet to provide /dev/video0 but Motion is already trying to open it and ...