Questions tagged [pi-3b+]

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

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9 views

Controlling a on/off switch with RF transmitters

So I happen to know some python to turn lights on and off in rpi3. Also to automate my home I know how to use relay boards. But the problem is that I have one rpi3 and the light which I want to ...
1
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1answer
83 views

Is there a way I can boot up an already shut down Raspberry Pi without physically accessing it?

I have a Raspberry Pi 3 B+ which is currently shut down, and not appearing on my network. The Raspberry Pi is running MotionEyeOS. And is powered using power over ethernet. I've tried starting it by ...
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0answers
7 views

unable to scan the ip address of Raspberry pi 3 B+ by using advance ip scanner

i have connected the raspberry pi to the laptop without using ethernet cable ( iam getting power (5v) from the laptop). i have inserted a file in the sd card of rasp for wifi connection country=IN ...
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3answers
104 views

How to choose a suitable display for pi 3 B+?

I'm currently looking for a display 5 inches or less for my PI, but there are a lot of information and since I'm quite new to the world of raspberry I'm looking for some help and guidance on where ...
-1
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2answers
45 views

DC12V, 3W Pump's Connecting Wire Melting Down Problem (External PSU 12V, 8.5A) [on hold]

So my wire started burning while activating peristaltic pump with relay and external power supply (output=12V). Why did it happen? Is it possible that diode is not well connected or that relay has too ...
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0answers
16 views

Enable Fine Timing Measurement (FTM) on Raspberry Pi 3B+

Is there any way I could create a mesh of Raspberry Pi 3B+ access points supporting the IEEE 802.11mc standard? I'm interested in experimenting with the Wi-Fi RTT Android API for indoor positioning ...
1
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3answers
119 views

pigpio.error: 'no permission to update GPIO' (again)

I am a beginner in Python and in the Raspberry field. I want to write a code to drive 3 leds with a PWM signal. The three leds must not emit at the same time and I want them to emit pulses trains. In ...
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4answers
2k views

WiFi won't start

I have a new Pi 3 B+ and am running openplotter version of NOOBS. When I boot, WiFi doesn't show on the top right of the home screen. When I run raspi-config for Network Options and WiFi, I get '...
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2answers
9 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 ...
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1answer
35 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 ...
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1answer
19 views

PINN no internet connection after hard reset

I have recently installed and configured a new server on my raspberry pi 3B. I used PINN as my bootloader and installed some OSes (Fedberry - an Raspberry Fedora implementation - being the main one). ...
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2answers
46 views

Raspberry pi 3 model B does not boot from USB

I've got a Raspberry pi 3 model B+, but unfortunately the SD card slot has broken, so I googled about booting RPI3 from USB and I realized it's possible but all tutorial that I've read mentioned that ...
2
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1answer
205 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 ...
1
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1answer
47 views

Begineers - I need dual Wifi on Raspberry 3b

I describe the situation which i need help. I have installed raspbian with RASPAP. I need from my raspberry to deliver 2 wifi ssid: Work, not DHCP, transmit the ethernet on wifi for workers.192.168....
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0answers
23 views

How to compile firefox nightly on Raspberry Pi 3?

I am running ArchLinux ARM on the Raspberry Pi 3 model B. I would like to install Firefox nightly on the raspberry pi 3 model B. I can find similar questions on the internet, but most of the answers/...
2
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2answers
350 views

Opencv VideoCapture much faster than PiCamera

I am trying to process frames from my V2 RPI Camera at high framerates and am stuck with the picamera module. The VideoCapture class from OpenCV seems to be much faster than using PiCamera....
1
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3answers
129 views

Unstable Ethernet connection on RPi 4

I run a headless Raspberry Pi 4 (4 GB) which is powered by the official USB-C power supply. I operate the Pi 4 (Raspbian Buster Lite) via the ssh protocol (putty) from a Windows machine. I realized ...
1
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1answer
213 views

How to toggle button on and off with gpiozero?

I can't seem to find a solution of doing this using gpiozero. I've done it using rpi.gpio with add_event_detect and call back to change state but I was under the impression gpiozero is much simpler. ...
0
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1answer
128 views

Cannot connect to my RPi via ssh

I installed raspbian stretch on my Rpi 3 and it works perfectly using HDMI display. But when I run it using ssh on my laptop. I cannot connect it using the ethernet. My laptop sends the packets but it ...
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0answers
40 views

Why the script hang for 2 days?

I am running a python script to check the internet connection of a wifi network. It is being run for every 10minutes. Afwer a one month of working, the scheduler is not invoking the actual function ...
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0answers
29 views

Network doesn't work properly after interface and wpa_supplicant restart

So, I am using an RPi 3 B+ on Stretch. Networking is done through /etc/network/interfaces and systemd's networking.service. The thing is, I am trying to write a script that restarts the wireless ...
1
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1answer
405 views

pymodbus on Raspberry Pi 3B and Energy Meter

Followed this thread on enabling the serial console on the Raspberry Pi 3B. Checked the functionality using this code: dmesg | grep tty Which produced these results: ... console [tty1] enabled ......
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0answers
24 views

VLC stream RTSP USB webcam

I'm trying to stream a usb camera using VLC. I used this page to get it working on a pi zero with a raspberry pi camera attached to it. On a second RPI 3B+ I'd like to do the same only with a USB ...
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1answer
70 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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1answer
36 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 ...
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1answer
169 views

I think I fried my RPi

I am working on two stepper motors and trying to control them using RPi3(Ubuntu mate) with A4988 motor drivers.I successfully managed to drive the motors with extenal 12V battery source.After ...
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1answer
163 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:...
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0answers
21 views

Mode of configuration on Zigbee

I connected one Zigbee with an overlay shield fixed on the RaspberryPi and one Zigbee attached to a vibration sensor. What mode should I configure on the Zigbee's?
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1answer
50 views

Not allowed to use internet in France?

According to the Declaration of Conformity, only indoor use is permitted. Is this just regarding the WiFi, or the whole Pi? What's the reasoning behind this?
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1answer
68 views

Rpi3B+ buster USB to Serial (/dev/ttyUSB0) Communication Problem

I'm trying to establish a serial communication between my Raspberry PI 3 B+ - running on Raspbian 10 Buster - and a testing machine I have. The normal behavior of the machine is to send test related ...
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2answers
43 views

Command for checking all devices attached to RPI

Is there any command for listing all devices attached to RPI(light bulbs, buzzers, USB-s, etc.)? If there is no that command, how can I check it?
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0answers
20 views

Raspberry PI 3B+ won't connect to smartphone Wi-Fi hotspot if it's “Shared wifi” instead of 4G+

I have a Samsung Galaxy S8 and a Raspberry PI 3B+. The PI can connect to a normal Wi-Fi without any problems. The PI can connect to my S8's hotspot if internet is from 4G(+) The PI CAN NOT CONNECT to ...
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1answer
403 views

Raspberry Pi 3 4G Dongle Internet to eth0

I have followed the following tutorial to setup Hotspot on RPi with a 4G Dongle. For 4G Modem i use Sakis 3g Scripts. It works fine. But when I try to connect my PC to the ethernet port of the RPi ...
0
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1answer
819 views

Raspberry Pi 3B+ doesnt play audio via BT speaker

so I wanted to play audio via a bluetooth speaker. I tried it with my Phillips BTM3160 and my Creative iRoar Go. The Pi wouldn't even connect to the Phillips one and on the Creative it plays with the ...
0
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1answer
112 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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2answers
452 views

Lan and Wifi interfaces behave strangely when trying to set a static IP

I'm using an RPI3B+ to learn about dhcp servers. I've hit a snag I can't figure out. Please bear with me. I want to explain what's happening in detail so you can understand it better. I booted my pi ...
2
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2answers
50 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,...
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2answers
363 views

Raspberry Pi batman-adv ad-hoc network setup unreliability

Problem: I am trying to configure batman-adv network on raspberry pi 3b+ following this, using on-board wlan0 interface coming with raspberry pi 3b+. Once the network is executed by following all ...
1
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1answer
896 views

Change back from LCD driver

I've successfully installed this 3.5" LCD display, which uses this LCD driver: https://github.com/goodtft/LCD-show. My problem is, that when I use VNC to remotely access the PI, (I assume) because of ...
3
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3answers
89 views

Cannot set static IP address for Wi-Fi

I am trying to make static IP address on RPI 3B+ for both ethernet and Wi-Fi. I was following this answer(How do I set up networking/WiFi/static IP address?), but still could not do it. So far I ...
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1answer
101 views

How to connect two BME280 sensors via I2C to a Raspberry Pi 3B+

I have a Raspberry Pi 3B+ and I bought two BME280 sensors (specifically these) and I would like to connect them via I2C. I read that you can do software multiplexing but all the information I am ...
-3
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1answer
36 views

How to send data wirelessly from Raspberry pi to another network at remote place? [closed]

I have to live stream video feed captured from rpi to the remotely placed device which is connected to another network. Please help me finding any link or any stack exchange post. My rpi is connected ...
0
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0answers
30 views

Voltage troubles with Pins (Relais stays on) [duplicate]

I am having troubles setting a simple Relais to On and Off. My code is quite simple: GPIO.setup(RELAIS_PIN, GPIO.OUT) GPIO.output(RELAIS_PIN, GPIO.HIGH) time.sleep(2) GPIO.output(RELAIS_PIN, GPIO.LOW)...
2
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1answer
99 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 ...
2
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2answers
32 views

persistent canbus data logging during power loss

I am trying to setup a robust raspberry canbus data logger. The pi will be installed on a mobile vehicle where the power to the pi is disconnected every time the vehicle is switched off, which will ...
1
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1answer
163 views

Raspberry VNC Server is not working

So, I have a Raspberry Pi 3 and I connected it to my laptop through Ethernet. Whenever I tried to connect my Raspberry, I often got this error "VNC Server is not currently listening for Cloud ...
1
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2answers
308 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 ...
0
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1answer
19 views

Stacking together two I²C hats with different voltage

I plan to make a domotic system based on a raspberry pi. I choose a grove hat to connect sensors and relays, but I need a digital potentiometer and grove system does not have that. So I plan to buy ...
0
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0answers
24 views

Raspberry Pi VPN causing problem in regular internet connection

My setup: RPi 3B+ as a wireless access point connected to my home router Openvpn NordVPN Problem: I can successfully connect to a Nordvpn server. It works well for some time. I keep the setup ...
3
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1answer
140 views

Keyboard and mouse don't work in GUI

I've tried to include as much information as possible, but if it isn't relevant I will remove it. I purchased a Raspberry Pi 4 months ago, and I've been using it to run some CRON jobs. I have a ...