Questions tagged [pi-3b+]

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

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Where does the Raspberry PI 3 b+ IO peripherals mapped in the ARM virtual address space?

BCM2835 data sheet The earlier version of Raspberry PI (BCM 2835) data sheet shows that the IO Peripherals are mapped from starting address - 0x20000000 - In ARM physical address space 0xF2000000 - ...
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1answer
68 views

i2cdetect shows two device address

I have interfaces Atmel 24C04 EEPROM to raspberry PI 3b+ and used i2cdetect to verify if the interfacing is done properly. I am new to this area and trying to learn by doing some hands on. After ...
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0answers
31 views

bluetoothctl hangs with “connect to bluetoothd”

I have a Raspberry Pi 3 and I have been playing with the bluetooth functionality. It worked for a while: I successfully paired a Windows machine with my Pi, but now it does not work anymore. I used ...
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17 views

Changing picade's power off functionality

I added a picadeX on top of my Rpi (3B), and it comes with a soft power off functionality. It works like a toggle switch : click once to power on click again to power off As I wanted to integrate ...
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2answers
174 views

Accessing a hotspot raspberry pi 3B+ and accessing network devices

I have a Raspberry Pi 3B+ which is working as a hotspot using a Hologram Nova usb modem where it receives Internet from and routes the internet through WiFi and Ethernet. This Hologram usb modem does ...
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1answer
796 views

Difference between iface wlan0 inet manual and iface wlan0 inet dhcp in wifi to ethernet router?

I have developed a wifi to ethernet router. Wifi is connected to my home router having internet and ethernet is connected to my laptop( just for testing).My laptop is not getting internet, but it gets ...
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2answers
54 views

RUN RC522 READ Python Script without SUDO [duplicate]

Im working with MFRC522-Python library, I READ the RFid Uid then I open a webbrowser with a specific URL composed by the uid of each card. The thing is in Raspbian Buster (RPI 3b+) cannot run Chrome-...
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4answers
5k views

What cooling is the most effective for the RPi 3B+?

I've been doing some research with the new RPi 3B+, but have been struggling to find much information about effective cooling for overclocking. I have seen some solutions such as Heatsinks (small ...
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0answers
28 views

Can't log in via any means

So I'm running Raspbian (I installed with NOOBS initially if that makes a difference) on a Raspberry pi model 3B+ and I can't log in. before anyone says it, I know this question has been posted before,...
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1answer
35 views

Cannot ping my access point

I created an access point on my Raspberry PI (Raspbian) following Setting up a Raspberry Pi as an access point - the easy way the systemd-networkd way. Now I have to connect to my AP via another RPI ...
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2answers
229 views

Clarification on Access point as WiFi repeater, optional with bridge needed

Regarding the detailed instructions for Access point as WiFi repeater, optional with bridge here: Access point as WiFi repeater, optional with bridge Since the raspberry pi 3 b+ has only one radio, ...
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1answer
167 views

Raspberry Pi running python opencv on php

I try to use the php running the python: <?php $command=shell_exec('sudo python /var/www/html/FacialRecognition/simpleCamTest.py 2>&1'); echo $command; ?> But the result show in ...
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0answers
22 views

RPi Camera starts going white

I bought a RPi Camera V2 from amazon yesterday and when I tested it today it started going white and then flashing colors like a disco party (rave starts 8 seconds in): https://imgur.com/a/QK5VL22 ...
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1answer
67 views

Scanner only works if used as root

I am having difficulties getting my scanner to operate. I am using Raspbian Buster on a raspberry pi 3b+. My scanner is a USB Canon LIDE 110, which is connected to the pi through a powered USB hub. ...
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0answers
22 views

Remote access lags on 3B+ when firewall enabled

I'm having some weird problems with SSH and VNC on a 3B+. I've got basic firewall rules on the Pi to allow that traffic through, but I get major lag with them. I'm talking 2 minute delays. If I ...
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0answers
59 views

Raspberry pi running hassio wont connect to internet/network all of a sudden?

I have a raspberry pi 3b+ which i use at home to run all my home automations stuff - one day when i came back from work nothing worked? all my dashboards, my lights, all automations nothing worked.. ...
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1answer
19 views

iptables blocking access to a service (Cloud9)

I want to create a Cloud9 server using a raspberry pi. I download the repository and it ran just fine in the port 8181 as it shows below. I could even access the panel from the Raspberry using ...
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1answer
64 views

Pi 3 B+, 7" official touch screen and a Sense Hat query

New here, but wanted to ask about the above. My Pi 3 B+ is connected to an official &" Touchscreen display, which uses a double adaptor to provide power to the Pi and scren. This work fine. ...
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1answer
107 views

DNSMasq unknown interface wifi0 - failed to start

Introduction I am trying to use my Ubuntu Core-RaspberryPi as a Wifi Access point. Therefore, I am using hostapd and dnsmasq. I followed this tutorial in order to setup everything. I start them ...
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0answers
20 views

PiCAN2 network is down

I am using RPi 3 model B+. I am trying to set up can communication using Pi CAN2 (From SKpang) with baud rate 500000. But I am getting "write: Network is down" whenever I am sending "./cansend can0 ...
2
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1answer
128 views

RPi 3b+ corrupt /boot (Please give me the contents of your /boot)

Last Friday (July 19th) I did sudo apt-get update and sudo apt-get upgrade, then I shut it down. Today, I tried to power it up, but nothing appears on my screen. My HDMI cable is working properly, so ...
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1answer
73 views

How to enable the mouse cursor when only usb mouse plugged in?

I have configured kiosk in raspberry pi with touch screen. And When I am using the USB mouse then cursor is not showing. I have followed https://medium.com/stories-from-upstatement/how-to-build-...
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1answer
56 views

Why can't I hear the sounds when making a call?

I was able to make calls using my RPI 3 model B+, Huawei E153 GSM Modem, and minicom. I can see that the cellphone I'm calling was able to answer my call (from my Pi). I plugged in my headphones to ...
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1answer
123 views

Using an additional WiFi dongle to create WAP and switch

I followed the answer to this question: Access point as WiFi router/repeater with additional WiFi-dongle To have my 3 B+ act as a WiFi hotspot where wlan1 connects to the internet (WAN) and the pi ...
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1answer
3k 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-...
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0answers
66 views

Powerbank for Raspberry pi 3 B + car robot

I am just beginner, so perhaps this question is not correct. I am going to build a robot car, and I am going to power it by using powerbank. My question is : is it enough for robot at all? I mean, is ...
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2answers
70 views

Should I tear apart USB PSU or get a dedicated switching PSU?

I'm going to be using an Pi-3B+ to switch an AC and a DC device using one of the popular relay modules. This whole project is going to go in a custom screw-together project box that will have AC input ...
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2answers
52 views

Relay modules: Can I switch AC in one and DC in another?

I would like to control both 120VAC and 24VDC from my RPi 3B+. To make this easy, I'm looking at one of the various 3ch or 4ch relay modules for an RPi 3B+, like this or this. I'm familiar with using ...
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1answer
21 views

How can I control a RaspiCam with the display CSI?

I was working with a RaspiCam on my 3B+ when something in the hardware broke. The Pi does not recognize my cam anymore. But when I connected it to the display CSI the LED on the cam started glowing. ...
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1answer
39 views

Is it possible to use the pi as a wireless usb passthrough to my windows computer?

I have just recently had a raspberry pi 3 model B+ and thought of a cool project. Being a total beginner at this area, i do not know if it is even possible. My desktop pc is in a very pecular ...
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2answers
118 views

Pi 3 Model B+ has steady red PWR LED but no green ACT LED with 2018-03-13-raspbian-stretch.img

Pi 3 Model B+ has steady red PWR LED but no green ACT LED with 2018-03-13-raspbian-stretch.img. See screenshot below. I'm not sure if the side of the ACT light is red and if so if that's also a ...
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0answers
43 views

reading EMG on Rpi3 using Teensy 3.2 on usb serial

We are using MyoWare EMG sensor and reading the RAW EMG pin as well as filtered SIG pin on the board. What it basically does is sends an analog value as a fraction of the input Voltage, which in this ...
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1answer
46 views

MGR996R rotation angle

Basically I want to control the angle of the rotation of the servo motor but I don't seem to know how... From the tech sheet I know this motor shouldn't be a continuous one, any hint would be ...
0
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1answer
133 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. ...
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4answers
56 views

Is it safe to reuse a crashed SD card?

I have the following set-up: RPi 3 8GB MLC microSD partition 1: root and the rest (read-only) partition 2: /var filesystem (rw) continuous writes to /var/logs system will experience unexpected sudden ...
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1answer
169 views

Raspbian on Raspberry Pi 3 b+ doesn't boot [duplicate]

All was working fine till I left my Pi 3 b+ board turned on for around 4-5 days along side windows on my monitor. Now, when I connect power to it, only red power led glows constant red. Yellow led ...
2
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1answer
83 views

Pi bluetooth audio: can't get LMS squeezelite audio to BT

I have a Pi 3B+ running Raspbian Stretch. I want to send audio via the built-in BT to a Logitech Audio Adapter which feeds my stereo. I can do this from the command line via either aplay or mpg123 so ...
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2answers
124 views

What are the differences in architecture of Model 2 and Model 3B+? (SD card not working in model 3B+)

I have two raspberries (model 2 and model 3B+) and two sd cards. I wanted to swap the cards. The card from model 2 is not recognised in model 3B+. There is no green LED which indicates that the ...
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2answers
49 views

How to clone a ssd which I am using to boot

I have an SSD that is connected via USB to SATA cable to the Pi. I have a lot of files and settings saved on this SSD, I wanted to make a backup of this on another SSD, such that if something happens ...
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0answers
8 views

Can I save and open multiple videos with OpenCV or any other module/package/method

So, I have been working on a project which requires me to open an animation/video if the user gives an input of a recognized string mentioned in my code. Basically if the word entered by the user is ...
1
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1answer
53 views

How to install 64bit version of mongodb on Raspbian?

I was able to install the mongodb-server. However, if I run the mongo-shell with the command "mongo", I get some warnings. One of them concerns me: NOTE: This is a 32 bit MongoDB binary. 32 bit ...
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0answers
179 views

Alsa Lib PyAudio error on Raspberry Pi 3b+

I was looking at an old question that gave advice for fixing these errors: ALSA lib pcm_dmix.c:1052:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown ...
2
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1answer
91 views

How to Package Custom RPI Kernel into *.deb?

I have compiled a custom Raspbian kernel from source because i need to enable the CONFIG_AUDIT flags for installing SELinux & Auditd. Following the Official Kernel Documentation i was able to do ...
1
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2answers
105 views

Create Wifi network without Internet Connection and perform WIFI Switch

I would like to create a wifi network which does not have access to the Internet - that should not be a problem as there are plenty of posts already on Stack Exchange covering this topic. However, ...
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0answers
24 views

Raspberry pi 3b + not booting up after connecting with Raspberry pi Camera

I am using Raspberry Pi 3 b+ for 3 months. I connected the pi using laptop Ethernet SSH connection. Yesterday i connected raspberry pi camera to the raspberry pi and enabled the interface setting ...
1
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1answer
35 views

Cannot get installed system to output component video, but NOOBS can

Background: Pi 3 B+ connected to an old tube TV with front composite video connection. I've installed NOOBS on a 32GB microSD card, and am able to successfully boot it, using the keyboard 4 key (NTSC)...
0
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1answer
37 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
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2answers
77 views

Raspberry Pi4 extension to PCIe

Is it possible to extend the Raspberry Pi 4 to provide a PCIe connection? I have a PC which has as only purpose to play music using this Soundcard (no Linux drivers that work well) "PCI Express X-Fi ...
1
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1answer
177 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 ...
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0answers
15 views

Has anyone used spidev library with python 3?

I am currently trying to interface a RPI 3B+ with a flash memory chip using SPI communication. do anyone have a good resource for using SPI communication with memory? What language should I use. I ...