All Questions

1
vote
1answer
37 views

Raspberry Pi 3B+ interface with Heart Monitor AD8232 using MCP3008 and SPI pins

I am making a project of Real-time ECG monitoring device using Raspberry Pi 3B+, Heart monitor AD8232 sensor by Keyes, MCP3008 ADC and 7" HDMI LCD. I am giving supply to RPi using 5V DC charger ...
1
vote
0answers
18 views

uv4l with multiple usb camera

I have 2 usb camera(1,2) and want to stream for each camera. I have used driver = uvc, but when i use default port 8090 for camera1, it works fine. When i explicity stated --server-option='--port=9000'...
0
votes
0answers
15 views

Control Led brightness with google home

I'm currently working my assignment to use google home to control the Led brghtness with pwm from raspberry pi 3. i've found some good tutorial on youtube and the internet, and now the connection ...
1
vote
0answers
18 views

Adafruit speaker bonnet: no error and no sound

I bought an Adafruit I2S 3W Stereo Speaker Bonnet with the 2x20 header pin pre-soldered and also the speaker set. The bonnet does not neatly stack on top of my Raspberry Pi 3 Model B+ because of the ...
0
votes
0answers
18 views

Raspi-config issue — SPI & I2C

SBC: Raspberry Pi 3B OS: Ubuntu 18.04 Enabling SPI causes raspi-config to respond with ``Programmer error: unrecognized option''. Enabling I2C causes raspi-config to enable SPI. Enabling I2C ...
0
votes
0answers
22 views

Where to find buttons for raspberry pi zero w [on hold]

So I want to make a intelligent light switch (to toggle on/off hue) with raspberry pi zero w to save as much money as possible. Where can I find some buttons to toggle/on off? I cant seem to find ...
1
vote
3answers
68 views

Can a relay be on for 16 hours continuously?

A part of my engineering project involves a L.E.D tubelight staying on for 16 hours continuously. I am connecting the light to a relay module. Is it ok, if the relay stays on for so long? I mean, is ...
1
vote
0answers
35 views

Autostarting Chromium (Edit: How to connect to the local Session on Pi?)

I just want to auto start Chromium on boot and I followed Method 1 over at this site. The same Method is used in the Top Answer here. All in all it is about adding the command for starting the ...
1
vote
0answers
9 views

How do I stop my HDMI going off

for some reason, after a while the screen connected to my RPI 3B+ goes off, and stays off, until I unplug it and plug it back in again. I only run in console mode, and running alt+F[1-4] does nothing,...
0
votes
0answers
8 views

ESC/POS Printer not detected by Raspberry Pi

I try to connect a POS printer with my Raspberry PI 3B. In my opinion, the printer should appear under /dev/usb/lp* or /dev/ttyUSB* or /dev/ttyACM* after connecting. At the moment I can't find the ...
2
votes
0answers
26 views

Not able to ssh into RPI Zero W with raspbian Lite?

I have for weeks now tried to ssh into my RPI zero, and I cannot figure out what is wrong here. I've been using this guide https://desertbot.io/blog/ssh-into-pi-zero-over-usb. The installation ...
0
votes
0answers
20 views

How to fill out wifi settings file for raspberry pi

I need to fill out a settings file for my raspberry pi, which looks like this: [connection] id=hassos-network uuid=e0638ca6-cd7a-4e82-9812-2984b9f01a4w type=802-11-wireless [802-11-wireless] mode=...
3
votes
2answers
31 views

Editing script on local machine

I always edit and execute code on my Raspberry Pi via SSH and Vim. Can I open script on RPi in my Sublime Text on the local machine and after saving this script (CTRL + S), it'll save on RPi?
1
vote
1answer
21 views

Qt Userland raspistill/racpicam integration - Unable to find an X11 visual which matches EGL config

I am developing simple gui app for a client on Raspberry pi running Ubuntu(Mate) 16.04 using Qt 5.5.1 and OpenCV for some face recognition (all C++) using 5MP pi camera. The framerate/CPU usage ...
0
votes
0answers
18 views

HDMI port is not working

I have been using an RPI3B+ for around 2 months . I used it remotely most of the time. Recently, when I was trying connect it with a monitor via HDMI to VGA converter , it didn't work at all. I ...
1
vote
2answers
22 views

How do I make a Java application I made run as a deamon?

I have a Java Application is going to be my Discord Server's bot. How do I make this application run as a daemon on a Raspberry Pi, it uses the latest version of Raspbian and the Java application ...
0
votes
0answers
19 views

How to read voltage data from arduino nano (slave) using i2c communication

python code: import smbus import time bus = smbus.SMBus(1) SLAVE_ADDRESS = 0x10 def requestreading(): # try: # # b1 = data[0] # b2 = data[1] # b3 = data[2] # ...
0
votes
0answers
16 views

How can I install java on a raspberry pi running kali linux

I am trying out kali Linux on my raspberry pi for the first time, and I am trying to install java, as I use it a lot on my pi. I didn’t want to give this up because of my new os. However, when I try ...
1
vote
0answers
50 views

project with my son

I am doing a pi project with my son. For the first part of the project he built a meccanno car and now we are going to power it. My setup is illustrated here: https://prnt.sc/nb8oph As you can see ...
0
votes
0answers
22 views

Using raspvid to stream to PC, I can see data on PC received but how to work with in openCV?

I am using PiCamera on my PI. I am executing this command on the PI: raspivid -n -t 0 -w 640 -h 480 -fps 30 -o - | nc 192.168.0.12 5000 On my computer (windows), executing this command: nc -l -p ...
2
votes
3answers
31 views

Stuck with the old kernel

I did recently an updated (sudo apt-get updated && sudo apt-get dist-upgrade) on my 3 raspberies. Two RPI 3B, and one RPI Zero W. The strange thing is that the raspberries that I installed ...
1
vote
1answer
8 views

Set taskbar width to 0 and can't undo it

Right click your taskbar and select panel preferences. In the Geometry tab there is a width attribute. I needed to make my taskbar disappear so I dragged width to 0. Now I seemingly have no taskbar, ...
-2
votes
1answer
42 views

Ensure/lock a program to run on Raspberry Pi only?

Are there any characteristics/ lock available so that the program would fail to run on any other device except Raspberry Pi. I have thought about using GPIO with external circuits but would prefer ...
1
vote
1answer
22 views

Slow Transfer Speeds When Multiple Raspberry Pi Zero Ws Connected Over WiFi

I'm working on a project that uses the pi camera module and 35 or more Raspberry Pi Zero Ws to take pictures and send them back to a central computer. Everything works fine with just 1 Pi connected, I ...
0
votes
0answers
15 views

Re-link Google Home Account with Assistant Pi [closed]

I installed the Google assistant on a Raspberry pi 3+ and it works perfectly. I see the Raspberry in my Google Home App and I can configure some features. However, by mistake, I have unlinked from the ...
1
vote
1answer
23 views

no module named 'speech_recognition'

I installed speech recognition pip install SpeechRecognition ran this import speech_recognition as sr r = sr.Recognizer() with sr.Microphone() as source: audio = r.listen(source) print(r....
1
vote
0answers
12 views

Raspberry pi3 TFT screen setup

EDIT: This is the the screen I bought This is my first post here so I hope I do not screw up too much... I have a raspberry pi3 with 3.5inch tft resistive touchscreen display (720x480) connected via ...
1
vote
1answer
19 views

RPi Zero: Two UART devices at the same time

I need to read UART data from one device, and send different data to the other device, all via raspberry pi zero. It has only one UART TX and one UART RX on GPIO pins, but I heard that it is possible ...
1
vote
0answers
6 views

Bluealsa not discovering nor connecting with iPhone

I am having a problem in trying to get my iPhone able to discover the raspberry pi as well as getting the raspberrypi to pair with the iPhone. I am using bluealsa as pulseaudio got replaced, however ...
2
votes
0answers
16 views

Trying to get SSH over USB to work (Raspberry pi Zero W)

I'm trying to connect to my Raspberry Pi Zero W using SSH over USB. I've seen other people do it, and I have tried multiple different tutorials over the last few days, but none of them worked. I've ...
0
votes
1answer
24 views

See what song is playing on OMXPlayer

Currently i use the following command to play an audio file os.system('omxplayer -o local --vol 600 --loop /home/pi/sound/homescreen_audio.mp3 &') This is in my python code. My question here is ...
-2
votes
0answers
29 views

How to run a python program on startup of raspberry pi?

I have written a program for face detection in raspberry pi B+ model 3 and want to run that program on boot up. I have also tried using crontab method and the /etc/init.d method also. But does not ...
0
votes
1answer
26 views

Pi HAT Waveform Generator for Raspberry Pi 3B+

I am looking for a Pi HAT capable of generating 300 kHz sine waves at about 8 samples per waveform with my Raspberry Pi 3B+. Sampling rate required is around 2.5 MSps. Output voltage ideally needs to ...
0
votes
1answer
30 views

Connecting 4 HX711 to one Raspberry Pi

I have four individual scales that are each connected to a HX711, those HX711s are each connected to the Raspberry Pi. I'm a beginner in python as well as this Rasberry Pi. how do i properly code this ...
1
vote
0answers
13 views

Ethernet speed: Screen On vs screen OFF

I've a Raspberry Pi 3 B+ with Ubuntu 18.04 installed. With an SSH connection with my Kubuntu PC, the transfer is good (4.5Mo/s) when RPi's screen is OFF (via xset dpms force standby) but if the RPi's ...
1
vote
2answers
39 views

Moving sd card to a larger one

I'm sure there are lots and lots of people asking this but I couldnt find a good answer. How should i move my x GB sd card content to the new XX gb sd card since i have multiple partitions? I ...
1
vote
2answers
28 views

Determine why PI didn't connect to a WiFi

I setup my Pi to connect to wifi by entering login details for two WiFi networks in /etc/wpa_supplicant/wpa_supplicant.conf. I managed to get this to work with one wifi, but now I'm somewhere else and ...
1
vote
1answer
48 views

Rasp pi 3 reliability - automatic updating a problem?

I have a pi 3 with Android Things that I use to control an irrigation system. It connects to wifi, gets the weather forecast and controls the irrigation valves based on the weather info. It runs ...
1
vote
0answers
18 views

IP address starts with 169

My Raspberry Pi 3 with is running Raspbian GNU/Linux 9.8 (stretch) has the wlan0: inet that starts with a 169 in the IP address. I know that this an IP address that is given when the DHCP cannot give ...
1
vote
0answers
15 views

Wifi stops working (on my laptop) after connecting rpi as ethernet gadget

So I am using a raspberry pi zero W as an ethernet gadget. I got ssh working and the RNDIS/Ethernet Gadget thing working so I can log into the pi using pi@raspberry.local. I even got VNC to work so ...
0
votes
1answer
36 views

Why write a text to file only works when call from terminal?

i got this simple code that writes a "abc" into a text file calles test.txt. Now, on a Raspberry execute this code wit IDLE or Thonny does NOT work, the text file remains empty... but instead, when ...
0
votes
0answers
20 views

5 images(jpeg) per second OpenCV from purethermal 2 [duplicate]

Is it possible to capture 5 jpeg images per second from a purethermal 2 stream with opencv or another way on a raspberry pi for a set amount of time? If so how? (I have a FLIR lepton 3.5 on the ...
0
votes
1answer
26 views

Automatically toggle Pi Zero hot spot/wifi client off and on

1I'm trying to set up Pi Zero W a wireless client in an embedded application that will first allow a user to log in to a hot spot, then select a wifi router accessible by the Pi, log in to the ...
0
votes
0answers
22 views

storing local SSIDs in an array

on my raspberry pi im wondering how i can run a command in python to list the local wifi networks i can connect to, however each SSID must be stored in an array. for example if there were three wifi ...
1
vote
1answer
34 views

Unable to exceed 100Mbps over 3B+ Ethernet link

I have an rpi 3B+ running Raspbian connected to a gigabit switch, and a Debian machine on the same switch. Both systems negotiated a gigabit link to the switch: $ sudo mii-tool eth0 eth0: negotiated ...
-2
votes
0answers
29 views

RasberryPI 3 help! [closed]

Hi I'm very new to all this, I would like to use my raspberry Pi on a TV with scrolling pages with different information on each page and if possible travel updates and 24hr news, any help or ...
0
votes
0answers
17 views

Raspberry Pi 2 crashes on manual ifconfig command

I'm trying to manually set IP configuration on my raspberry pi 2. Using SSH I run the following command in the terminal sudo ifconfig eth0 10.0.0.100 netmask 255.255.255.0 up my raspberry pi then ...
-2
votes
0answers
19 views

Can I connect multiple (different sensors) at a time to raspberry pi [closed]

Can I connect ds18b20,dht11,and a light sensor at a time. If yes what may be the statements for the code. I have separate codes for all the three sensora but I am not getting how to combine them in a ...
1
vote
1answer
38 views

USB hub raspberryPi

I've been searching for a host-powered USB hubs with Raspberry Pi and discovered that most of the hubs are sort of built for the raspberry Pi device. I intend on using the USb port for serial ...
0
votes
2answers
23 views

Execute single graphical programs remotely using X Window

I have a Raspberry Pi with Raspbian Stretch Lite. I want do execute only some single graphical programs remotely and do not want to install a complete graphical user interface with a Desktop program ...

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