Questions tagged [pi-3b+]

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

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98 views

Why the message “raspberrypi dhclient: send_packet: Network is unreachable”?

I am having a raspberry pi jessie OS. I configured it as ethernet to ethernet router. eth0 is connected to a modem and eth1 is actually a usb to eth converter. Rpi get internet through the eth0 ...
1
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1answer
115 views

GPIO pin (BCM 12) acts differently on PI3 and PI4

The following code is running on PI3 and is working perfectly fine. I try to provide a short description of what the code does. In this code I first set the BCM 12 as the pin of interest for my sensor ...
5
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1answer
81 views

Is it possible to configure a Raspberry Pi 3 to become a Bluetooth adapter for a desktop PC?

Stupid question, but I've been looking everywhere. I want to configure my Raspberry Pi 3 so that it can basically serve as a bluetooth adapter for my desktop pc. Is this possible, or does it only work ...
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1answer
22 views

How do I set up an RPi 3 as a 1-port eth0 router?

I want to set up my RPi3 to be a 1-port router running a webserver. I know how to make a wireless access point and connect my PC via hostapd/dnsmasq, and I know how to set up a webserver on the Pi. ...
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0answers
28 views

Combining potentiometers to register as buttons

Does anyone know how I could use 2 potentiometers (1 for vertical axis, other for horizontal) and combine them to register as buttons? I want to make a shifter for sim racing and I want to combine 2 ...
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2answers
52 views

Ethernet to connect directly to device with static IP and no DHCP, Wi-Fi to connect to WLAN normally

I have a Pi3B+ (running Buster) that connects to my WLAN nicely via normal wpa_supplicant.conf means. ~ $ ip -4 addr show | grep global inet 169.254.60.134/16 brd 169.254.255.255 scope global ...
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0answers
23 views

How can we acquire an analog signal having both positive and negative parts , i.e. a bipolar signal, using Raspberry pi3 B+ module?

I am using raspberry pi 3 B+ board. I have to acquire analog voltage signal having both positive and negative parts, i.e. a bipolar signal How can i acquire this signal with the R-pi? I have tried ...
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1answer
93 views

RPi4B PCA9685 PWM Controlling Servo Problem

I have this RPi3 that I am running a bunch codes on it. It is communicating with a server and also I have python supervisor running on it. Now I am trying to set up the same system on RPi4. For some ...
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56 views

dnsmasq DHCP refusing to work. NordVPN hotspot on Raspberry Pi

I'm trying to set up a NordVPN hotspot on my Raspberry Pi 3B+ so I can connect it to my smart tv and get rid of Netflix region restrictions. I have everything set up properly but still dnsmasq DHCP ...
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1answer
102 views

Response to a incoming call using python script

I am trying to implement a system using Raspberry-pi and SIM-800 modules. Now I can see incoming calls from my python script, but it can not parse data. import serial serialport = serial.Serial("/...
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37 views

Logitech F310 hot plug working on Pi 3 B+ but not on Pi Zero W

I wrote software in C for my work that reads Logitech F310 controller input and controls our vehicle accordingly. I wanted my software to be fault-tolerant, so I added code that checks the presence of ...
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1answer
40 views

Counting Two Pulses Generated By Rotating Motor

I want to Count pulses based on some Conditions which are: (1) Count all the rotations generated during motor Rotations. (2) Count all the motor rotation pulses when an additional signal is enabled. ...
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0answers
85 views

Why UDP connection from hotspot raspberry doesn't work

To start with I have to say I have seen few similar questions but none of those could help me with resolving my problem. My setup is, two raspberry Pi 3 B+ with Raspberian on board(updated). One of ...
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0answers
37 views

When I install volumio in my raspberry, I got the error as below, how to solve the error:Failed to open ALSA device “hw:1,0”

When I install Volumio OS in my raspberry 3b+ and plan to play music withe it, but when I play a music from the GUI of volumio, I just got the error as "Failed to open ALSA device "hw:1,0";No such ...
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0answers
38 views

irsend pauses for significantly too long

I'm having a problem replaying a raw sequence using irsend. The sequence below is very simple. Very long pulse (6700us), followed by a very long pause (3400us) followed by two short pulses and two ...
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0answers
66 views

Installing PiVPN failed to connect port 443

https://www.youtube.com/watch?v=WA7QTM9hovQ&t=119s The first time I tried to install PiVPN on my Raspberry Pi 3 B+ (Linux raspberrypi 4.19.58-v7, Raspbian GNU/Linux 10 (buster)) with the steps in ...
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117 views

Audio output not working

I bought a raspberry pi3b+ for my son that is connected to the TV, I installed both raspian and lakka and i configure it, but there is no sound coming from the TV via the HDMI port. After several ...
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0answers
61 views

RPI GSM Add-on SIM800 AT commands are not working

I am trying to send sms using RPI Add on v22 module and Raspberry-pi 3+. I have mounted this module on top of Raspberry-pi. When I use minicome using minicom -D /dev/ttyS0 -b 115200 -o I get the ...
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1answer
184 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 ...
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1answer
61 views

Getting OpenGL ES Framebuffer back to CPU Memory

I've started learning how to use OpenGL ES, and am trying to do some general purpose computing using the Pi's GPU. I've got it mostly working, but I'm hung up on the last step: getting a framebuffer ...
2
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1answer
176 views

systemd-networkd: Bond Ethernet and Wifi (USB Dongle), AP with Raspi 3b+ on board Wifi

Raspbian Buster Lite, Raspi 3b+ I want to bond ethernet (eth0) and a USB wifi dongle (wlan1) for network/internet access. This part I've managed with success, dynamic failover works perfectly. The ...
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1answer
77 views

Fail to mount NAS network drive

I am attempting to mount a network drive. Since I am experienced with raspbian I've asked a friend that is for help, but neither him or I have managed to succeed. I'm, using a RPi-3b+ and a ReadyNas ...
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1answer
34 views

Run a code without being on the physical machine

I have some devices (i.e. leds) that I need to control on a Raspberry Pi, but I was thinking if there is a way in which I can put the code in a server, and then when the raspberry Pi receives a ...
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30 views

RaspberryPI use with 3G/4G dongle

I've been looking into a project which would require me to enable my PI to have a remote internet connection. I'm wondering if the PI is able to use a 3G/4G dongle for this? If it can, does anyone ...
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1answer
203 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 ...
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1answer
67 views

RPI 3B+ 'activity' LED always flashes approximately every 1.5 secs With Buster booted external USB SSD?

Booting my pi 3B+ from Buster on a USB SSD 240G Kingston A400, I now get quick pulsing yellow (green?) activity LED flash bursts, every 1.5 to 2 seconds, during normal operation, even when only the ...
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2answers
169 views

Configure Rpi as router - error when starting network and DHCP interfaces

I looked at several solutions for this question, but none of them worked. Additionally, I tried some of the tutorials provided (with the necessary changes), but none of them worked My aim is to use a ...
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0answers
31 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. ...
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0answers
156 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-...
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1answer
36 views

Is it possible to make access raspberry pi 3b+ access point from wifi without ethernet and other external devices? [duplicate]

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 ...
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1answer
298 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 ...
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0answers
44 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 ...
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1answer
38 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 : #...
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0answers
20 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
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0answers
14 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
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1answer
87 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
44 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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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 ...
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0answers
57 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 - ...
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1answer
23 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 ...
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1answer
124 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 ...
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0answers
29 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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2answers
88 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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1answer
35 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 ...
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2answers
37 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
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1answer
41 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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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 ...
3
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1answer
97 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
24 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
131 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.. ...