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Questions tagged [pi-3b+]

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

1
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3answers
41 views

How to recover 'deleted' microSD card space? [duplicate]

I've been playing around with my RPi3B lately and for whatever reason wanted to reformat my SD card. I'm unsure how I did it but now when I insert the card it says there is only 31mb of space. The ...
1
vote
1answer
26 views

P5 code optimisation for raspberry Pi

When I try to execute this sketch that is based on a face recognition algorithm it really lags on raspberry, whereas when run on different devices (macbook pro and notebook), it runs smoothly. You can ...
0
votes
0answers
19 views

Meaning of output from 'ps -aef | grep python3'

When I enter this command, ps -aef | grep python3 I get the following message pi 828 1 0 12:06 ? 00:00:08 /usr/bin/python3 /home/pi/hs110-data-collect.py pi 5079 863 1 ...
0
votes
0answers
23 views

Porting tizen 3.0 on a raspberry pi 3

it's my first time to run another os on my RPI3 other than rasbian so I'm trying to set-up tizen 3.0 on my RPI3, I have found this link that describes all the steps to port tizen on a raspberry pi3 ...
-1
votes
1answer
38 views

Powering a line following robot with a power bank. Any thoughts?

I am currently wondering for a college project, if it'd be possible or not to use a power bank to build a line following robot and power both the pi 3b+, the waveform motor driver hat with 2 dc motors(...
0
votes
0answers
28 views

DS18B20 temperature sensor not found in devices folder

I am trying to setup DS18B20 for Raspberry Pi. I have followed the instructions from Adafruit Lesson 11 updated RBPI kernal to 4.19 setup wiring (see below) with 10k resistor verified signal (yellow ...
0
votes
0answers
9 views

Install USB Wifi to run in parallel on RPi 3+

This is a very similar question to one already asked, but it is different in that I want the USB dongle to provide internet access to the RPi while the RPi AP still operates. I am trying to set up a ...
1
vote
0answers
13 views

Regarding ttyS0 and ttyAMA0 of Raspberrypi b+

Is it possible to communicate at the same time with raspberry UART(ttyS0) port Rx and Tx and ttyAMA0 (inbuilt Bluetooth) Communication? In my current project, I am doing the serial communication of ...
1
vote
1answer
37 views

AM2302 no signal using Raspberry Pi 3

I am trying to setup a AM2302 (DHT22) to use with Raspberry Pi, and unable to get a signal. What I need help is to be able to conclude whether the problem is due to (1) sensor fault (2) wiring fault (...
0
votes
0answers
11 views

Problem: Tor Router with a Wifi to Ethernet Bridge

I configured my Raspberry Pi 3 Model B to route all traffic from wlan0 to eth0. This works for me and I can connect my RPI to a Wifi-Network, connect my computer with the RPI through ethernet and I ...
1
vote
1answer
21 views

Software control backlight of a 3.5 inch display

I'm using a 3.5 inch SPI screen on a Raspberry PI3. I would like to know how is it possible to control the backlight value with a shell command. I try to use the command echo %s > /sys/class/...
6
votes
2answers
4k views

Access point as WiFi repeater, optional with bridge

I need a wireless access point that is bridged with the wired ethernet port and that is connected to another wifi internet router with a client connection as uplink. All devices connected to the RasPi ...
0
votes
2answers
34 views

hostapd doesent work anymore

I was running hostapd and it worked fine but i had to reinstall the os and copied the config but now it gives me some problems. First of all hostapd was masked, then i unmasked it and tried to start ...
1
vote
0answers
1k views

Pi 3B+ jack audio inputs

Related: Raspberry Pi 3 audio input? I need to be able to input several jack microphones (minimum 2, more could prove useful) to my raspberry, to do some audio processing (between all inputs), and ...
1
vote
1answer
57 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 ...
0
votes
0answers
14 views

PyGame GUI hidden by program

I am working on creating a graphical program to display two lines of text (a big message and a small message) on my Raspberry Pi Touchscreen using the module pygame. In the basic terminal, I can pass ...
1
vote
2answers
86 views

Roughly how much users could handle a RaspBerry Pi3b+ as server for standard Wordpress personal blog?

I want to try to use my raspberry to host a standard wordpress personal blog. Yes I know this could sound a crazy idea but I'm wondering roughly what range of users could handle assuming a standard ...
1
vote
1answer
26 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 ...
0
votes
0answers
12 views

OpenCV 3.3.0 issue

Hey when i am running code i got this annoying error #!/usr/bin/env python import numpy as np import cv2 as cv import os from pantilthat import * os.system('sudo modprobe bcm2835-v4l2') cascade = ...
0
votes
0answers
25 views

Pi 3 Model B+ can't boot after changing vRAM

I just got the device (Pi 3 Model B+) and am a total beginner. I'm using NOOB/Raspbian. Every time I try to change the video ram (either through the GUI or the config.txt) the device is unable to ...
1
vote
1answer
160 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'...
0
votes
0answers
15 views

Extracting machine data using Pi

We currently have moulding machines i am looking at whether i can use raspberry pi to give live data from each machine either from the main control board or the traffic lights system we have to show ...
0
votes
2answers
34 views

How to run program automatically after booting Raspberry pi on stretch

I have written a program for wireless communication between raspberry pi and Arduin0 with Hc05. But how to run this program automatically after booting pi? every time I have to login pi and run the ...
1
vote
0answers
34 views

Remote internet options

I am looking to set up a RaspberryPi 3 for a trail cam and I have seen multiple option for internet access that are a little dated. Wondering if there is anything more "up to date" that I am not aware ...
40
votes
3answers
193k views

How do I make serial work on the Raspberry Pi3 , Pi3B+, PiZeroW

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

regarding system used uart port of raspberrypi3 b+

I want to do a serial communication Raspberrypi and voice recognition module v3, and for that I have to disable the system used UART port raspberrypi3. After disabling the raspberrypi3 b+ system used ...
0
votes
3answers
1k views

SSH not working on Raspbian

I can't get SSH to work on my newly setup Raspberry Pi 3. Installed a fresh image of Raspbian Stretch Lite. I am unable to access the machine in the LAN using SSH: pi@domoticz_pi:~ $ ssh 192.168.178....
2
votes
1answer
49 views

Media + Torrent box on Raspberry pi 3 B+

I want to make my Raspberry Pi 3 B+ a media & torrent box. In addition, I don't want to connect it to the TV - so I want the media to be shared via SAMBA or similar, control the pi through SSH ...
2
votes
1answer
57 views

Is it safe to power my external hard drive with a Raspberry Pi 3 B+ USB port?

I have a external hard drive that has written on it "5V ⎓ 1A". Both power and data transfer happen over a single USB. I have been reading about powering this hard drive with the USB ports on my ...
0
votes
2answers
83 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, ...
0
votes
0answers
20 views

how to install Azure IoT Hub Device Client SDK python on Raspberry PI 3 B+

I am using Raspberry PI 3 B+ with Raspberrian stretch os. How to install Azure IoT Hub Device Client SDK python on Raspberry PI 3 B+
1
vote
2answers
32 views

AWUS036AC (rtl8812au) – ›Association request to the driver failed‹ after restarting wpa_supplicant.service

I am using an AWUS036AC wifi dongle to connect to the internet. I installed the drivers following this instructions. When I restart my wpa_supplicant@INTERFACE.service I get this error message: ...
0
votes
1answer
90 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 ...
0
votes
0answers
28 views

Use of bind-interfaces in dnsmasq?

We have used dnsmasq to set up a wifi to ethernet router on raspbian jessie. I have configured eth0 for static IP address using dhcpcd.conf file and it is given as follows. interface eth0 static ...
2
votes
1answer
1k views

RPI3 Raspbian Stretch regular connection on wlan0 AP on wlan1

I'm trying to make a very simple setup with my RPi. On the on-board standard wlan0 I want to connect to my home network normally, using a wpa_supplicant file this works very well. Now I'm having ...
-3
votes
2answers
79 views

I want to connect raspberry pi and alexa in order to control my Samsung tv

i have amazon alexa and i cant control my Samsung tv model UE50KU6000W. Somewhere i can't recall i think that i read that you can do it if you use raspberry pi. So is that true? and if so how can i ...
2
votes
1answer
28 views

Problems with Wifi mmc1: timeout response

I'm having problems with my raspberry pi 3b. I will try to explain it in the best way, I have several raspy working with a script in python that I did, in the script it establishes a communication to ...
0
votes
0answers
23 views

Try to sending and receiving data from raspberry pi to HC05 arduino

But I am not able to connect my HC05 module with Raspberry Pi 3B and I am getting error like: connect 00:18:E4:40:00:06 Attempting to connect to 00:18:E4:40:00:06 [CHG] Device 00:18:E4:40:00:06 RSSI: ...
1
vote
0answers
12 views

UART 0 PCLK not registered (pi 3)

I'm using a rpi 3 and so to use the UART 0 I had to disconnect the bluetooth from it: enable_uart=1 dtoverlay=pi3-miniuart-bt dtoverlay=midi-uart0 in /boot/config.txt It works great but now at ...
0
votes
1answer
20 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/...
1
vote
1answer
19 views

custom kernel fails to boot - 'task init:1 blocked for more than 120 seconds'

I'm trying to build a custom kernel for my 3B+ (following this guide: https://www.raspberrypi.org/documentation/linux/kernel/building.md). It seems to boot without any error messages until it ...
6
votes
1answer
904 views

Netbooting multiple “workers” RPi from a “master” RPi

My question is, I believe, a little bit complex, and I think it would be better to fully describe what I have and what I want to achieve, with what I am able to do. What I have I have a group of ...
0
votes
1answer
23 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 ...
1
vote
1answer
43 views

CPU/RAM monitoring of one process

I know close questions have been asked, but I did not find any answer to this. I would like to monitor CPU and RAM of a process I launch, which is executed through several threads. I would like the ...
0
votes
1answer
81 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 ...
0
votes
0answers
24 views

Differences in DPI video between Raspberry Pi 3 B and 3 B+

I have two identical setups with 5" TFT displays connected to Raspberry DPI hats. The SD card images are identical. The only difference is one is using a model 3B and the other a model 3B+. I have the ...
0
votes
0answers
23 views

PI 3B not booting without Logitech USB dongle plugged in

My (headless) Raspberry Pi 3B (boots from SanDisk Ultra Fit 64GB USB stick) will not boot at all without the Logitech universal keyboard/mouse dongle plugged in one of the USB ports. With it plugged ...
2
votes
2answers
59 views

Unable to flash Android of things on SD card properly

I have been trying to install Android of things on Raspberry Pi 3 B+ but cannot get it working. I downloaded latest android of things setup utility, ran it on windows 10. I have successfully flashed ...
0
votes
1answer
41 views

How do I start and stop the on board wireless access point?

I would like to have my wireless access point available at particular periods of the day and not at others. I have a RPi3+ running default Raspbian and followed https://www.raspberrypi.org/...
0
votes
2answers
492 views

Failed to execute child process “xterm”

I updated my Pi yesterday. Afterwards my own sh program, which is for switching audio-outputs stopped starting with the error message Failed to execute child process "xterm". The programm uses the #!/...