All Questions

0
votes
2answers
6 views

i2cdetect detects device - Pi can't access / find it

Currently I'm working with a gyro-sensor and need to use i2c in order to use it. Using a Pi 3 B (os:NOOBS) on kernel: Linux raspberrypi 4.14.98-v7+ #1200 SMP Tue Feb 12 20:27:48 GMT 2019 armv7l GNU/...
0
votes
1answer
17 views

Crontab suddenly doesn't start jobs

I'm suddenly having crontab issues, I didn't do anything other than change the script names and then change them in crontab as well so they all natch, the scripts work if I start them manually, so i'm ...
0
votes
0answers
8 views

How to enable the mouse cursor when only usb mouse plugged in?

I have configured kiosk in raspberry pi with touch screen. And When I am using the USB mouse then cursor is not showing. I have followed https://medium.com/stories-from-upstatement/how-to-build-...
0
votes
0answers
12 views

Can I install ChromiumOS on old Raspberry Pi B+?

Dumb question: Please dont redirect me to other stack exchanges I know its possible to install ChromiumOS (not chromium) on Raspberry Pi 2 and 3, but I wanna know if its possible on RPi B+(the first ...
0
votes
1answer
8 views

Python script unable to receive input from Java

I am quite aware that this might be more of a Java/Python problem but it's on the RasPi and I also don't know if Java or Python is the problem. So here is the situation: I have a python script ...
0
votes
0answers
13 views

Help Interpreting Raspberry Pi GPIO's allocated to Robot starter kit called AlphaBot2

I am a complete newbie to robotics, so please excuse me if this is a simple question. I bought this robot starter kit and need help understanding which features are associated to which Raspberry Pi ...
0
votes
0answers
4 views

Omxplayer how to stream video to external react frontend

So the videos are on the pi, we have a react frontend on my local machine connecting to the flask backend which is on the pi. I need a way to get the video from the pi displaying on the website ...
0
votes
0answers
24 views

Raspberry Pi 3 Model B+ vs Odroid C2 huge performance difference

So i benchmarked my Raspi 3 B+ and an Odroid C2 with sysbench by in single and multithread operation by using sysbench --test=cpu --cpu-max-prime=20000 --num-threads=4 run The results are kinda ...
1
vote
1answer
14 views

Can the DS18B20 be parasite powered without external pullup?

I have a DS18B20 temperature sensor which I am trying to use in parasite power mode with only two wires (data line and ground) with my Raspberry Pi Zero W. I've connected it to the RPi in the ...
0
votes
0answers
9 views

PYTQ on Rasberry Pi and Friture

I'm trying to create a stand alone audio analyser using Friture (http://friture.org). I have a B+ (Rasbian version 9, Python 3 and 2.7. Latest updates. Trying to install via pip gives me a PYQT find ...
0
votes
0answers
16 views

Strange performance problems

I've been trying out a raspi 3 as a desktop recently, and have run into strange performance problems, particularly when using chrome. setup: raspberry pi 3 running raspbian stretch 2.5A power supply ...
0
votes
1answer
10 views

Upon starting Node-RED my Pi detects all of its i2c addresses as connected

I've been trying to connect an MPU-9250 module to my raspberry pi B+ in order to output the sensor's data through a Node-RED UI, i followed this tutorial to setup the MP-9250: https://kingtidesailing....
1
vote
1answer
20 views

Script for monitoring RAID status

I am looking for help with the creation of a script to monitor the status of a RAID implemented using mdadm. Is it possible to create is an icon that can be clicked on, script starts up and displays ...
0
votes
0answers
17 views

I tried many GSM modules with RPI 3B+ but no response

I used both of adafruit fona gsm module and sim900 chip but when i want to see the response by sending AT, i got nothing even though i am sure of my connection is right. I have heard i cant use ...
0
votes
0answers
22 views

Cannot modify files hosted on raspi on other computers in the network

having a weird issue with my pi. Pi is set up as SMB host, hosting music files for access around the house. I can't modify the files from any of the other computers though, except with sudo. Instance, ...
0
votes
1answer
31 views

Start / stop a script with buttons

i want to start and stop this script with a buttons 1 button to start and one to stop using gpio pins 35 and 37 #!/usr/bin/env python from random import randint import SimpleMFRC522 import time ...
0
votes
0answers
26 views

Forward internet to usb0

I have Raspberry Pi 3 (running Raspbian) and Raspberry Pi Zero (DietPi). The Raspberry Pi 3 is connected to ethernet. The Raspberry Pi Zero is set as Ethernet gadget (according to this https://dietpi....
0
votes
1answer
28 views

anode RGB LED to raspberry Pi

I have wired up a common anode rgb led to my raspberry Pi. I dont understand why its not lighting up. My setup is this: 5v to rgb anode rgb to pi pins ( 5,6,26) My code is const Gpio = require('...
1
vote
1answer
28 views

autostart chromium fullscreen NOT kiosk

I want chromium to start up fullscreen with the default startup pages but I don't want it to start in kiosk mode. I've tried a desktop entry and running it from ...LXDE-pi autostart by just leaving ...
-1
votes
0answers
21 views

count to movement according to the time pressed button [on hold]

I need to develop a project with the codes I share with you.The details of the project are as follows.Could you help me about this issue? button pressed for 9 seconds, move = 0 button pressed for ...
-2
votes
0answers
24 views

When I run project to my raspberry pi. They always show me “error”. Because of Debugger coding in it. How to solve this issue [on hold]

When i run program to another raspberry pi 3b+ device. It shows me error. Because it contains debugging code and connect with the serial no. or cpuinfo of raspberrypi. Please check all code in given ...
1
vote
1answer
25 views

How to connect a bluetooth device from the command line

I have a headless raspberry pi (it's networked but not plugged into any keyboard or monitor). I've previously used it to play music through a wired speaker plugged into the headphone socket. I was ...
0
votes
1answer
26 views

Controlling a led button and receiving input from that button

Ok, I have a button with a small 24v Led inside. My goal is to control the light depending on the state of the button. Quick press: toggle start/pause --> light on/off Long press (1500ms) --> reset -...
-2
votes
0answers
18 views

Android on raspberry pi 3 model [on hold]

Unable to run Android on raspberry pi model.after formatting SD card installing Android by balena etcher.it get installed after inserting memory card on pi it shows black screen nothing more than that....
0
votes
1answer
26 views

wine: cannot find L C:\\windows\\system32\\msl.exe

I want to run MSLPU39_Cloud_Ultrasound_Diagnostic_System_Version_1.2.exe software on raspberry pi 3 Model Vi.2. (This pi has Quad Core 1.2GHz Broadcom BCM2837 64bit CPU.) This is a windows based x64 ...
1
vote
1answer
35 views

Wiring that won't damage my pi [on hold]

A while ago, I decided to wire up a Raspberry Pi (Zero W) to a few peripherals, but it stopped working shortly afterward (not entirely, but I think it was undervolting the power rails). I had ...
0
votes
0answers
14 views

How to fetch latest camera frame from PiCameraCircularIO?

To achieve maximum performance delivering single JPG frames as a simple webservice I constantly fetch into a circular buffer with the picamera API. Unfortunately the documentation about it is not very ...
0
votes
0answers
15 views

raspistill timelapse stops producing output

So I'm trying to run a timelapse for 24-36 (or until storage space is full) but raspistill seems to stop producing output after anywhere from 50-300 stills. raspistill -t 129600000 -tl 5000 -o tlapse%...
0
votes
0answers
12 views

Forcing raspi-config to run automatically on next boot, but only once

Once the RasPi boots for first time, it shows the raspi-config utitliy. But on next boot it's gone. I would like to run it during first boot, do some configuration stuff, and then re-enable it in ...
0
votes
0answers
13 views

What size the SD card need to be? Does the ‘Class’ matter?

What should be the minimum size of SD card and class of Raspberry Pi for better performance of the right size.Is SD card just used to initially flash the board with the OS, or does it need to remain ...
0
votes
0answers
18 views

StromPI UPS on Pi Zero

Has anybody used the StromPi UPS with a Raspberry Pi Zero, and if yes, which version? I'm asking because the Pi Zero is not in the manufacturer's compatibility list (probably not a big deal with the ...
0
votes
1answer
16 views

Prevent guest user from using bluetooth and wifi

I'm running raspbian stertch and need to create a guest user to use the raspberry pi with limited permissions. To be specific, I'd like to prevent the guest user from using Bluetooth and wifi. I ...
0
votes
2answers
25 views

How to connect to the internet using an Ethernet cable

I have an Ethernet cable which I use to connect to the internet on a desktop Windows machine. These are the IP settings I gave the Windows machine: IP adr. 172.18.14.19 subnet mask 255.255....
0
votes
0answers
23 views

Raspberry Pi's Ethernet cable port suddenly stopped working after connecting 4-channel Relay board

I am having trouble with my Raspberry Pi's Ethernet and USB ports. I was using Ethernet port usually for my experiments with pi. But I tried to connect 4-channel relay board to my pi. According to my ...
0
votes
0answers
17 views

Raspberry Pi Zero W not booting(ACT green led weak blink)

Raspberry Pi Zero W ACT green led weak blink and not booting. But sd card is working in Raspberry pi 3. Stretch and Jessie installed but both did not work What is the problem? SD card Samsung Video: ...
0
votes
1answer
29 views

Can't reclaim freed disk space

How to reclaim freed disk space after Telegraf filled all swap on Raspberry Pi Zero running Raspbian 9 Stretch? /var/swap grew to 14GB, so I disabled swap with dphys-swapfile and deleted the swap ...
0
votes
0answers
12 views

Raspberry Pi 2 power consumption incorrectly

Before, i'd a problem about changing governor for my Pi (cpu always stays at 600Mhz in every mode), after doing some tweaking, i'd already make it up to 900Mhz. However, now i'm using a power-meter to ...
0
votes
1answer
26 views

Python RPIO.ChangeDutyCycle() Equivalent in WiringPi (C)

I'm currently developing an application with the WiringPi library. I have implemented a prototype in Python, and I'm currently trying to reproduce the same behaviour in C++. However, I ran into some ...
1
vote
0answers
18 views

Communication from Raspberry Pi 3B to Pi zero 1.3 via USB

I have a Raspberry Pi 3B that I need to use to communicate to a Pi Zero 1.3. I am able to SSH into the Pi 3B from my computer via ethernet. I can also SSH into the Pi Zero from my computer via USB. ...
-2
votes
1answer
31 views

Gps for raspberry pi, which one is better in term technical specification and compatibility? [on hold]

Whic one is better between gps add on v2.0 module and gps module ublox neo 6m if I ise this one raspberry pi 3?
0
votes
0answers
14 views

I changed my VNC password before, and now I forgot it. How do I reset my password?

I tried using vncpasswd but that did not work, any ideas?
0
votes
0answers
18 views

High CPU usage from PyGame with time.sleep

so I'm running a very rudimentary webcam surveillance program with PyGame, that just takes a picture from the webcam, stamps the time and saves it in an endless loop. (and does some simple date ...
0
votes
0answers
11 views

How to cleanly reboot a Raspberry with iSCSI rootfs?

I have a setup where a Raspberry 3 boots with PXE and mounts an iSCSI volume as rootfs with iscsid. Now, it seems there is no way to cleanly reboot since there is the network chicken and the rootfs ...
-3
votes
0answers
14 views

Connected to WiFi but no real connection

When I try to connect to the router in my house, it connects and I get a proper IP address. But I’m not connected and can’t download anything. If I share WiFi from my phone it works great. This ...
1
vote
1answer
64 views

Can I connect two Raspberry Pis to one 5" Display via an HDMI switch?

I have two Raspberry Pis running very different systems. I want to build an enclosure so that I can use a single 5" display (Amazon link) for both Pis. The setup I'm envisioning would rely on an ...
0
votes
1answer
26 views

Sending program result to phone, how?

How do I send the result of a python program that's running more than one hc-sr04 sensor to a phone and then using said data in an android app(Java)?
0
votes
0answers
13 views

Controlling servos with AMSpi fork and Arduino motor shield

I have previously asked another question relating to this topic but since then I have found this fork of the AMSpi library which seems to support controlling servos. The problem is, without any clear ...
0
votes
1answer
979 views

Why do LED lights need resistors? [duplicate]

Can someone explain why LED lights need resistors when connecting to pi. The raspberry Pi is either providing 3.3v or 5v depending on if it's connected to power pins or gpio pins. Your set up would ...
-2
votes
0answers
37 views

Raspberry Python No Longer Reliable For Continuous Use

I have developed multiple YouTube Raspberry PI clock projects since 2014 and all of them require iterative loops checking for the time (seconds) to change to update a digital, binary or roman numeral ...
0
votes
0answers
15 views

Python3 Error while accessing from a Particular path

I'm Getting the following errors while using python3 from a fixed location, here it is 'python' Directory (/home/pi/python) pi@rituraj:~/python $ python3 Python 3.4.2 (default, Feb 10 2019, 17:23:02) ...

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