All Questions

0
votes
0answers
17 views

I2C Raspi (Master) Arduino Mega (Slave) creating a csv File from sensor values

i am trying to connect raspi 3 (master) with an Arduino Mega (slave). I have 4 analog sensors on the on the Arduino Pins A0 - A3. I now want to be able to manually start and stop the readings from ...
0
votes
1answer
41 views

Raspberry Pi Touch Screen - I can't do anything

So, I recently bought a UCTRONICS LCD 3.5 in. touch screen for the Raspberry Pi (I have a Raspberry Pi 3 with Raspbian Stretch), and attaching it and getting it to turn on worked just fine. I ...
0
votes
0answers
10 views

Wifi direct connection disconnects automatically after a few seconds in Raspberry pi

I am using this configuration for wifi direct connection in Raspberry PI 2 B+ ctrl_interface=DIR=/var/run/wpa_supplicant driver_param=use_p2p_group_interface=1 update_config=1 device_name=...
2
votes
2answers
36 views

How can I implement event detection?

I want to implement a function that does not abort my program but wait until I press the button on channel 11. And start the program again. #!/usr/bin/env python import RPi.GPIO as GPIO import time ...
-2
votes
0answers
34 views

How to we create two way communication between Raspberry pi 3 and Android/ ios App? [on hold]

We are trying to communicate between Mobile App and Raspberry pi 3 with some efficient method.We are using firebase and Android Things server right now.We are quiet new in this field. we are using ...
1
vote
0answers
18 views

Voice recognition and processing using a wireless microphone and a wireless speaker on RPi 3 B+

I have installed Google Assistant on my Raspberry Pi 3 B+ and it seems to be working fine. My setup is: The voice input is through a USB microphone. The output is through the 3.5mm jack (I use a ...
0
votes
2answers
75 views

Is Raspbian stretch repository down?

I came to the office this morning only to be greeted by a whole bunch of puppet errors all over our device fleet. Upon investigating, it seems none of the devices are capable of locating the raspbian ...
0
votes
0answers
19 views

Can't install development files for QT on RPi Zero W

I've been following this tutorial trying to get working QT cross-compilation from my PC to a Raspberry Pi Zero W. It is failing on Step 5 ("Install a bunch of development files"). Running sudo apt-...
0
votes
0answers
17 views

Microphone Error: arecord: main:722: audio open error: No such file or directory

I am a 100% beginner when it comes to raspberry pi and this is my first project. I am trying to configure a microphone and speaker for an alexa module being integrated into my magic mirror project (...
0
votes
0answers
35 views

How can I recieve data from uhf rfid reader's usb port to my raspberrypi controller

I am new to raspberry pi, currently we want to develop gate control with open/close boom-barrier so we are using an UHF RFID reader and a raspberry pi. I bought a RFID reader that has a USB connector ...
-1
votes
1answer
30 views

Raspberry PI Portable USB Charger [duplicate]

I bought a $5 usb charger that I am using to power my Raspberry Pi. The charger works decently but I am noticing that every once in while the raspberry pi will reboot. I have read that some chargers ...
1
vote
0answers
25 views

HDD goes down and I need to reboot the raspberry

I have a raspberry working with transmission + plex. The issue is that the HDD goes down randomly and those services stop to work. When that happens, the rasp is still alive and I can connect via ssh, ...
0
votes
2answers
39 views

Running temperature options

I have new RPi 3B+ intended to run 24/7. I am looking to ensure it doesn't overheat, so am wondering whether having wired ethernet would make it run cooler than using the WiFi? The Pi is situated ...
1
vote
0answers
15 views

Is it possible to run P4wnP1 on Raspberry Pi 3?

im 13 years old and im from italy(my english isn't very good for this reason), for you is possible to run P4wnP1 (for ethical hacking purpose) on rpi 3 model B? If the answer of that question is '...
0
votes
0answers
29 views

Why does the SSH RSA signature change frequently

I am running a couple of servers on my Raspberry Pi 3, and have access to it via both VNC and SFTP. The Pi is sometimes shutdown very frequently (while testing code), if this is relevant. The problem ...
2
votes
2answers
75 views

How can I stay connected wirelessly online but also set the ethernet to a set ip address to connect to a piece of hardware

I am currently working on Raspberry Pi 3B+ (Stretch 9) and I have been stumped on how to be connected online wirelessly while also having my LAN port configured to receive and send data via a ...
1
vote
1answer
19 views

Need RPi3b voice control

I'm failing to find a simple way to control my RPi via microphone. I've fount some projects but they all require things such as Google AIY voice kit. Is there any simple way for me to control GPIO ...
0
votes
0answers
13 views

how to establish a communication between obd2 wifi and the pi 3 (raspbian)

i want to recieve data from my obd2(ELM 327) wifi interface to my pi into the screen, i can connect my pi to the "WIFI_OBD" but i don't know how to send a command throw the screen and receiving data. ...
0
votes
1answer
19 views

Is LWIP integrated with USB in Raspberry?

Can I add to a Raspberry Pi (2, 3?) an usb dongle (to add a network interface) and then install LWIP to manage that connection using LWIP code? LWIP is a IP/TCP Open stack (https://savannah.nongnu....
1
vote
2answers
61 views

Max distance for GPIO cable? [duplicate]

I'm planing on putting up a magnet and a reed switch on my window at home and I'm planing on using a RaspberryPi to sense when it's open/closed. I'm going to pull the wire up in the attic so the ...
1
vote
0answers
42 views

UV4L and v4l2rtspserver

I am trying to stream with uv4l over v4l2rtspserver This is what I do: Start /dev/video0 $ uv4l -nopreview --auto-video_nr --driver raspicam --encoding h264 [core] Trying to loading driver '...
0
votes
0answers
32 views

Pi won't connect to HC-06 Bluetooth module

I’m really desperate for some help with an issue that’s been kicking my backside for days. To give some background - I have a Raspberry Pi 3B+. On it I have the latest RetroPie image (4.4). I’ve ...
0
votes
0answers
22 views

GPIO Open drain and open source setting while using the pin as input

I found this document. It says: Open Drain and Open Source Sometimes shared signals need to use "open drain" (where only the low signal level is actually driven), or "open source" (where ...
-1
votes
0answers
25 views

Cant connect to pigio localhost? [duplicate]

RPi 3 B+, Raspbian, Python 3.5 I'm tryiing to use the hardware PWM via the pigio library & am using the example code from the website. import pigpio imort time GPIO = pigio.pi() HSYNC = 18 GPIO....
0
votes
0answers
16 views

Raspbian - Require login occasionally after reboot

I have suffered this problem for several months, i have already config it to auto login via sudo raspi-config select Desktop auto-login for GUI But still prompt a login dialog after reboot ...
0
votes
0answers
37 views

How do I find which pins my TFT display is using?

I have a TFT Touch Screen Display from Tontec that I'm using for a project. According to the product description the display only uses 8 pins. However, the connector cable takes up 26 pins worth of ...
0
votes
0answers
20 views

Cannot start Deluge, Keep getting Syntax Error

pi@raspberrypi:~ $ sudo deluged pi@raspberrypi:~ $ [ERROR ] 22:51:31 main:248 invalid syntax (__init__.py, line 1) Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/deluge/...
1
vote
1answer
51 views

Java 11 not working

I want to start experimenting with Java on a PI, following this guide http://docs.gluonhq.com/embedded/#_setting_up_the_raspberry_pi and started with PI ARMv6 rev 7 (v61) Kernel Linux 4.14.79+ ...
0
votes
1answer
25 views

Java error javax.net.ssl.SSLHandshakeException: when trying to read from webpage

I am using java to read from a webpage using this code: import java.net.*; import java.io.*; public class URLReader { public static void main(String[] args) throws Exception { URL oracle = new ...
2
votes
1answer
597 views

What is the purpose of auto-login? Is it safe/secure?

Please excuse my ignorance. I have searched and I haven't found anything that addresses my question. What is the purpose of auto-login and is it safe to enable? I am using my Pi 3B to host a very ...
0
votes
1answer
26 views

I2C instability

I2C was working great for over a month using an Adafruit Motor Hat, and an LSM303 accelerator/compass also on the interface passing through the Motor Hat and consuming 3v. As a side note, power-wise, ...
5
votes
1answer
129 views

Clients connected through OpenVPN unable to process DNS requests through Pi-hole

I am on Rasbian Stretch. I installed OpenVPN (via PiVPN) and Pi-Hole (4.2). I setup my Pi-Hole (that runs on 192.168.1.6 on the LAN) to use Cloudflare DNS over TLS (using the cloudflared service on ...
0
votes
1answer
76 views

Sequential file name problem (Python/Picam)

I would be very grateful for some guidance on the following script. You will see that I have very little experience (3 days!). Using the pantilthat servo control, I am taking a image (jpg) at ...
0
votes
0answers
28 views

How to play specific video files through python script based on passed integer

I have an oddly specific problem, though aren't they all? I have a RPi 3B+ on stretch that I'm trying to boot into a python script that I've written that receives an integer and passes it to two ...
0
votes
2answers
28 views

How to use a PC to access pendrive that is plugged in pi? [on hold]

Is that we can access or see the file in pendrive which is plugged into pi, as a normal storage device in a PC from which the pi is powered?
1
vote
1answer
39 views

Raspberry Pi connecting to Wifi but not ethernet

I am trying to SSH into a Raspberry Pi 3B+ using ethernet, but it says: No route to Host. Pinging the IP doesn't work either, and raspberrypi.local doesn't seem to be resolved by mDNS. When I tried ...
0
votes
1answer
26 views

How to control Arduino Uno using Raspberry Pi after image processing is done?

I am working on a project which is basically a robot car to collect garbage after the image in front of it is determined as Garbage (image processing using Raspberry Pi). I want my car movements to be ...
-1
votes
0answers
20 views

Unable to update date and time on NOOBS installation

I installed the latest version of NOOBS onto my Pi 3B+ and I completed all the steps but it shows the wrong date and time. I have tried all the possible ways to fix this but I can't seem to.
0
votes
0answers
27 views

Getting error: `/usr/bin/veracrypt: No such file or directory` after installing veracrypt

I am trying to install the armv7 version of Veracrypt on my Raspberry Pi. I downloaded it from: https://launchpad.net/veracrypt/trunk/1.21/+download/veracrypt-1.21-raspbian-setup.tar.bz2, unzipped and ...
0
votes
0answers
11 views

Debian gateway server with webmin suddenly unable to communicate with anything

I have a Raspberry pi running Raspbian Lite and webmin that is been serving as my home network gateway (and has been for some time without issue). Tonight I was attempting to add some port forwarding ...
-1
votes
0answers
18 views

How do I use a push button hardware to call a class?

I am making a project using a raspberry pi. In this project, I have to capture an image and go in a process of computer vision. I created a UI and in this UI, for after I click a button widget I use ...
0
votes
0answers
21 views

desktop not loading

I've recently encountered a problem on my raspberry pi 3 not loading desktop. I thought it was due to some extra large files I had, so I deleted those but desktop still does not load. I typed in ...
0
votes
1answer
30 views

Static IP address not working on Raspberry Pi with DHCPCD

I created a static IP address for eth0 to use with a USB dongle (connected to my PC) in dhcpcd.conf file. interface eth0 static ip_address=169.254.2.13/16 static routers=169.254.11.25 Is there ...
1
vote
1answer
24 views

GPIO PWM reset to high

I'm using the pi 3a+ pwm to send sync informations to my music gear. When I stop the pwm, I don't use the pwm.stop(), but rather set the duty cycle to 0. This is because I run the pww from a different ...
0
votes
0answers
58 views

How to connect Raspbian Stretch Lite to wifi on Raspberry Pi Zero W

I've been working on getting wifi to work on my new RPi install for over 20 hours now and don't seem to be making any progress. I've had two RPi 3s (Model B+) for a couple of years now, running MoOde ...
0
votes
0answers
46 views

Can't get MLX90640 working

Warning. Really long post. Hi. I’ve been having problems in getting my MLX90640 thermal camera to work on my Raspberry Pi Zero W. I’ve connected the camera to Pins 1,3,5,7,9 as instructed. I then ...
0
votes
0answers
49 views

How to use WM8960 Audio Board on Raspberry Pi Zero W

I'm trying to use the WM8960 Audio Board (not the HAT) on a Raspberry Pi Zero W. I followed the instructions for the HAT to install the driver (WM8960 Audio HAT User Manual). It seems to be installed ...
0
votes
0answers
8 views

RPI access point and how to share the internet with connected devices

I want to share the Internet from my USB modem stick on my raspberry pi to other devices by turning my pi into a WiFi access point. I am using a pi 3 model B+ running raspbian stretch and I am able to ...
0
votes
1answer
25 views

FFMpeg doesn't have tools/zmqsend

We are trying to use zmqsend (it's part of the ffmpeg repository) to communicate with a ffmpeg instance. On Raspbian, ffmpeg is configured with --enable-libzmq, and libzmq-dev is installed, but ...
0
votes
1answer
29 views

Mute PAM8302 amp with Raspberry Pi

I'm using a PAM8302 amplifier with a Raspberry Pi Zero W and it's working great. However, I'd like to start the amp muted and then unmute it from a Python script. Per documentation, PAM8302 goes into ...

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