Questions tagged [pi-3b+]
Use for questions specific to the Raspberry Pi 3 Model B+
603
questions
1
vote
0answers
22 views
RPI 3B+ yellow LED flashes every 1.5 secs With Buster booted Kingston A400 SSD, always?
Booting my pi 3B+ from Buster on a USB SSD 240G Kingston A400, I now get 5 to 10 fast yellow LED flashes, every 1.5 to 2 seconds, during normal operation, even when only the Desktop is running. This ...
1
vote
0answers
15 views
I don't know why suddenly mjpg-streamer and webcam stop working
I have made a program that uses three webcams and three ultrasonic sensors using raspberry pi 3 and python 3. When each ultrasonic sensors detect stuff in front of them, webcam take a picture of it. ...
0
votes
0answers
16 views
VLC cannot read mjpeg video produced over USB webcam
I'm trying to use vlc to transcode a mjpeg stream from a USB camera connected to a raspberry pi 3B+, however VLC seems unable to read the mjpeg video stream from the camera, I already checked the v4l2-...
0
votes
1answer
24 views
Is it possible to make access raspberry pi 3b+ access point from wifi without ethernet and other external devices?
Is it possible to create access point from Raspberry Pi 3B+, without ethernet? I'd like to create access point like for example android hotspot, were you can start hotspot but you still can use ...
1
vote
1answer
35 views
Simulate raspberry pi GPIO
Is there a software to simulate Raspberry Pi hardware design such as proteus? I would like :
To use a raspberry pi as a virtual component,
Do all the wiring, simulate,
Simulate, test code,
Check for ...
0
votes
0answers
29 views
USB mic input + 3.5mm jack output
I'm trying to set up my Rpi using a USB mic and output through the 3.5mm jack.
If I select the USB mic in alsamixer, I don't have any sound at all. If I use the 3.5mm I get sound but cannot record ...
0
votes
1answer
21 views
How rpi3 as slave use i2c with wiringPi
I tried to let my rpi3 with wiringPi as slave to receive data from master
and data +1 send to master .
mater send 1 to slave (rpi3)
My rpi3 SDA is GPIO 18 ,SLC is GPIO 19
the code on my rpi3 :
#...
0
votes
0answers
19 views
Howto tell the difference between a RP3B and RP4B from a script? [duplicate]
I want to create scripts that configure RP3 and RP4 software installations using Raspbian Lite.
The scripts need to know the difference between an RP3B+ and and RP4B.
How can I do that?
Dazz
0
votes
0answers
10 views
I2C client driver instantiation using Device Tree - probe did not get called
I am writing a sample and simple i2c driver in which I am trying to instantiate the
i2c client device using device tree overlay. I have got some DTE overlay sample which i have complied to .dtbo and ...
1
vote
1answer
53 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 ...
0
votes
0answers
19 views
Problem in uninstalling FluxePi login page
I'm facing a problem while connect to my server. The web server(IP address) automatically take me to the FluxePi login page, I want to remove this login page, so that i can work on apache2 web server.
1
vote
0answers
12 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 ...
0
votes
0answers
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 ...
1
vote
0answers
27 views
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 - ...
0
votes
1answer
21 views
Pi stopped connecting to wifi in fedberry?
I'm using a rpi3 b+ and fedberry 27.
I had connected to wifi previously, now it suddenly stopped working. In edit connections I shows that I have my wifi network as a saved connection and my password ...
1
vote
1answer
54 views
Raspberry Pi ethernet network bridge with seperate wireless connectivity
As explained here, I built an Ethernet bridge using a Raspberry Pi 3b+.
As an extension, I am now trying to connect it to the internet via the Wifi interface.
For that I configured the wireless ...
0
votes
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,...
0
votes
2answers
28 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-...
0
votes
1answer
26 views
autonomous lawnmower with gps, radar and remote control
I am trying to build an autonomous lawnmower using raspberry pi 3B+. I want to include auto-steering or remote control and also I want to include the radar as well to avoid any obstacles and also want ...
0
votes
2answers
30 views
Second wifi (dongle) only as local network
I'm running Raspberry Pi (3B+) 9 (stretch) Wlan0 connected to WAN with network info stored in wpa_supplicant.conf.
I recently purchased an Wifi dongle in order to create a wireless access point from ...
0
votes
1answer
31 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 ...
1
vote
0answers
20 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
...
3
votes
1answer
49 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.
...
0
votes
0answers
22 views
2 RPi's one VPN server one VPN client how to
I have 2 raspberry pi's that I'm playing around with.
One raspberry pi I have set it as a vpn using pivpn I have enabled port forwarding on my local router and I can access the vpn at home using my ...
0
votes
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 ...
0
votes
0answers
16 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..
...
0
votes
1answer
69 views
How do I connect my Raspberry Pi 3 B+ to a hidden network? Nothing I've read works
I just installed Raspbian on my SD card, but I cannot connect to my network initially because it is hidden. I've tried following the guide https://raspi.tv/2017/how-to-auto-connect-your-raspberry-pi-...
-2
votes
1answer
16 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 ...
0
votes
1answer
37 views
How to use at the same time 2 hardware pwm in wiringpi
I need help to configure 2 hardware PWM channels. I am developing device, and sometimes I will need active 2 PWM channels with different frequencies (frequencies is low: 410 and 580 Hz).I'm writing ...
-2
votes
0answers
32 views
how to import 'Adafruit_GPIO.SPI'?
import time
import Adafruit_GPIO.SPI as SPI
import Adafruit_MCP3008
CLK=18
MISO=23
MOSI=24
CS=25
mcp=Adafruit_MCP3008.MCP3008(clk=CLK,cs=CS,miso=MISO,mosi=MOSI)
while True:
v=(mcp.read_adc(0)/1023....
0
votes
1answer
21 views
How can I sent live video to a monitor without internet or Bluetooth on a Pi 3? [closed]
I have a Raspberry Pi 3, a camera and a 3.5 RPi display. All I want to to is send video from the camera to that monitor without the use of the internet or Bluetooth.
2
votes
1answer
48 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 ...
0
votes
0answers
14 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 ...
1
vote
2answers
29 views
do RPi3 3.3/5V pins output constant voltage even if the RPi power supply is changing voltage?
I want to power my RPi with a lithium ion battery. The RPi will be powering some devices which require constant voltage to power them.
If I use a battery as supply for the RPi (which changes as it ...
1
vote
1answer
49 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 ...
0
votes
1answer
36 views
SSH connection hangs in Mac OS Terminal - No prompt for password
I've been SSH'ing into my Raspi 3 B+ for some time now from my Mac OS with no issues.
I recently set a static IP address for my Pi on a LAN network connected via ethernet cable. I edited
sudo nano /...
0
votes
1answer
22 views
Raspberry 3B+ Can it be connected the same time for WiFi and for Ad-Hoc wireless network
Sorry guys, I'm not a Linux guru at all. So the problem:
I have a general wifi in my office and there is Internet shared
via this network
I have a raspberry 3b+ device
I could connect
rpi to this ...
1
vote
0answers
61 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 ...
0
votes
2answers
43 views
Test raspberry power supply
I have a raspberry pi 3 B+ and an external hdd like this one
Connecting it directly to the pi makes the pi shutdown and restart
I’ve tried to use an external usb hub with power but it still keeps ...
2
votes
1answer
115 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 ...
0
votes
1answer
56 views
Unable to install Mongo-DB on Raspberry Pi with Ubuntu Core 18.04
I am trying to install mongoDB on my Raspberry Pi 3b+, which has an ARM 4-Core 64 bit processor.
I was trying to install MongoDB on my Pi just as mentioned in their documentation but unfortunately I ...
3
votes
2answers
64 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 ...
1
vote
2answers
50 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 ...
1
vote
1answer
19 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. ...
1
vote
1answer
34 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 ...
0
votes
0answers
26 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 ...
0
votes
1answer
39 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
votes
1answer
51 views
Can Pi 3b+ be killed by wire under ethernet port
Can raspberry pi be killed by cable under ethernet port? I had moved pi on desk and placed it over a cable in area shown on picture (cable has only 5mm exposed wire), after that pi freezed and din´t ...
2
votes
2answers
119 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 ...
1
vote
4answers
52 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 ...
