0
votes
0answers
3 views

Multiplexer vs RPI Compute Module for stereo camera?

I am looking to capture images simultanously using 2 picameras (tried USB the FPS is low). It seems like there are 2 options: Raspberry Pi compute module 3 with IO board which gives 2 CSI ports(...
0
votes
0answers
5 views

python error: “ImportError: No module named encodings”

I'm in a bit of a python death spiral, here, with the "ImportError: No module named encodings" error when I try using python. I've read a dozen or so different posts on the problem, and none of them ...
-3
votes
0answers
19 views

find ip address by mac address in python

I need to find ip address of my device by mac address of it in my network by a python code. how can i do that? or is there any way to determine ip address of my device in python? my device is an ...
0
votes
1answer
20 views

YA Cron Question

I have a python script called mediacircus.py that works when run manually (using Idle) in /home/pi. I have a Cron schedule to run it every minute that looks like this: * * * * * /usr/bin/python /home/...
0
votes
0answers
11 views

wlan0 does not get correct IP / gateway on _one particular_ Wi-Fi spot

Edit: I found the possible culprit, see end of question I have started off Jessie, and I need the Pi to be able to connect to various Wi-Fi networks (it will get sent away, so it "just needs to work")...
-2
votes
0answers
23 views

Javascript HTTP Requests, successful on other platforms, failing under Chrome on Raspberry Pi/Raspbian [duplicate]

A Javascript that successfully makes HTTP calls to other servers under Chrome on other platforms does not work under Raspbian on Raspberry Pi. I have a page on localhost with a javascript attempting ...
0
votes
0answers
7 views

Raspberry Pi Server Internet WLAN connection only if router is on

I've got a Raspberry Pi with a running Node.js server on it. After connecting it with my router via Ethernet, I have to set the Internet connection of one of my devices with the SSID of my router. ...
1
vote
0answers
12 views

printer driver for Pi from linux driver

Hope I'm in the "right" place for this query. If not, please direct me to a more appropriate SE or other site, thanks. I have a Pi 2B, to which I have USB connected an old DroboS and it works fine as ...
0
votes
0answers
7 views

MPD with Bluetooth

Is it possible to run MPD with bluetooth in the Pi? Currently many guides which I have seen are mostly utilizing Upnp/Wifi setup to run. Now this is fine if there was only Apple devices. Since ...
-2
votes
0answers
26 views

Anyone get a cross object request to work from Chrome Javascript? [on hold]

A Javascript that runs well under Chrome on other platforms does not work on Raspberry Pi. What does Javascript require to make a simple call http call to an external site from Javascript under Chrome?...
0
votes
0answers
19 views

unable to install packages- raspberry pi 3

I have been trying to get this working for a lot of hours now but no success. Here is what I have done- ping 8.8.8.8 works Also added nameserver 8.8.8.8, 8.8.4.4 in etc/resolv.conf as suggested on ...
0
votes
0answers
16 views

What happen if i use a fake sd card to install raspbian [on hold]

I bought a sd card but i am not sure if this card is fake . I tried to install noobs and raspbian but i failed The green and the red led are working
0
votes
1answer
14 views

Switch Raspberry Pi 3 between access point and non-access point

I used this tutorial to make my Raspberry 3 an access point. After following that, I can't connect to the internet—neither via Wi-Fi nor via cable. With this tutorial when I see the DHCP status—it ...
1
vote
1answer
16 views

Controlling electromagnets in clock display

I have an electromechanical 7-segment clock display with each segment controlled by an electromagnet. A segment is 'on' depending on the polarity of the last pulse to its electromagnet. Can anyone ...
0
votes
0answers
12 views

listen for sensor continuously when using django as a server

I have developed a smart bulb using relay to switch the bulb on and off when I clap. This works with a simple python script but that i want to use django as a server for handling this use case. I ...
-1
votes
0answers
14 views

Using barcodescanner to trigger digital timer

I'm looking for a way to use a barcodescanner to trigger a digital timer. The context is a workshop, where there are certain tools that can be safely used for only 4 hours. These tools will be ...
0
votes
0answers
23 views

RPi3 's usb port fail

Mouse and keyboard does not work properly when connect to my pi3 modelB's usb port. It worked perfectly a day ago. But wifi dongle can process as usual. dmesg show below [ 3410.013515] usb 1-1.2: ...
1
vote
1answer
31 views

Detect an SD card that became read-only

Recently my SD card died, becoming permanently locked in a read-only state. I realized it a few weeks after the fact, when I saw that files I would create disappeared after a reboot. Of course, all ...
1
vote
1answer
11 views

cannot connect to pi via sftp filezilla on mac but ssh via terminal successful

I am fairly new to command line and rPi, all previous experience has been desktop & web apps and have fallen at a major hurdle with my new Pi. As the title suggests I am struggling to sftp into ...
0
votes
0answers
6 views

Is full FOV in rpi-cam V2 possible at 640x480 @60fps?

I have a video recording system developed using RPi 2 Model B and Cam v1 and plan upgrading to RPi 3 Model B and Cam v2. My application is such that I need higher frame-rates (60fps +) at Full FoV, ...
0
votes
0answers
12 views

Raspberry PI - team viewer start up

I am new to raspberry and would like to know simple steps to follow to start Teamviewer on Raspberry Pi startup thanks in advance
0
votes
0answers
16 views

apt upgrade fails on fresh image

I flashed the latest version of raspbian-lite to an SD card and booted my Model B from it. I changed the hostname and other config settings in raspi-config, then reboted and tried to run sudo apt ...
0
votes
0answers
11 views

Iterate through directory of images [on hold]

I've got a Pi 3 with Raspbian that connects to my NAS. I want to display the digital photos we've accumulated over the years but haven't found a really good way to do that. Right now I'm running a ...
0
votes
2answers
21 views

Start Python CLI app on startup

I have a Raspberry Pi 3b+ that is booting to the pi user terminal, no GUI. I need to have a small CLI app run after the pi has finished booting. So far I have tried editing /etc/rc.local, and using ...
0
votes
0answers
17 views

Install ubuntu from live mode

I've started the linux ubuntu mate on raspberry pi skipping the install step and entering in live mode. Now i want to install on microsd but i can't find where to start the installation. I don't want ...
1
vote
0answers
16 views

Select time zone not working in Android Things default screen

I recently reset my Android Things on my Raspberry Pi 3 because it was unable to find my own WiFi. After the reset I tried to go into settings and change the time zone to GMT+02:00. If I click at ...
0
votes
1answer
16 views

Iptables and reverse ssh tunnel to connect with IP camera

I need to be able to access an IP camera that is on the same local network as a raspberry. I do not have access from the outside because it is a mobile data network that does not give me public IP or ...
2
votes
1answer
26 views

SSH not working over WLAN (ssh enabled, ping works, tcpping on port 22 works)

I know this has been asked several times, but I went through a lot of trying to connect from my PC to my Raspberry Pi via SSH and I don't get it to work. My Setup: Raspberry Pi 3 Model B+ Working ...
0
votes
1answer
31 views

Long distance wired communication between 2 raspberry pi

I need to send video feed from one raspberry Pi to another raspberry Pi for 10 meter . Can I use Ethernet cable ? what do i need to do?
2
votes
1answer
17 views

Execution interruption while holding a kernel spin lock

I want to toggle an GPIO pin with a certain accuracy. (i.e. latency about 1 us). I have a Raspberry Pi 3 model. Therefore I wrote a simple test kernel module. The toggling loop does basically this: ...
0
votes
1answer
26 views

Why is the autostart a directory and not a file in .config on Pi 3b+

Unable to open the autostart file to enable RealVNC to auto boot
0
votes
0answers
22 views

Picademy Parts Kit Immersible Temperature Probe Pinout

I have a Picademy parts kit (12 of them, actually) from Newark/Element 14. These kits have an immersible temperature probe that I conjecture is based on a DS18B20. However, there's no documentation. ...
1
vote
1answer
50 views

Use Raspberry Pi GPIO to sync multiple video players. Possible?

Is it possible to use GPIO to sync multiple RasPi video players? As shown in the picture below, I need to sync 16 RasPi video players. The master RasPi will trigger the video players (start, stop, ...
0
votes
1answer
30 views

I have raspberry pi 3 but I can't install rasbian on it [on hold]

I used many sd card but it didn't works.i don't know that the raspberry is broken or the sd card is facke
-1
votes
1answer
19 views

How to get the Pi to recognize numbers and letters from images

I would like to start a project that will take a picture of the license plate of a vehicle and then take all the digits and record them. Is there a way to have the Pi recognize the digits?
0
votes
2answers
20 views

Raspberry Pi VNC login info

I have set up a correct VNC server, but when i try to login to it on my Mac it asks for login info. i tried using pi and the username and raspberry as the password but it did not work. Is there a way ...
0
votes
0answers
7 views

No sound through headphones using libreelec

I have set up libreelec so it can play videos on my pi 2 that is connected to the official touchscreen, however, there is no audio output. I have set the audio to output to the analogue output in ...
0
votes
0answers
22 views

Raspberry pi nrf24l01 on SPI1

for the past couple of days I've been trying to figure out if there was any way to use nrf24l01 radio module on SPI1 pins. I have a raspberry pi 3B+ with a 5 inch LCD elecrow screen. Whenever I try to ...
0
votes
1answer
48 views

Is it okay to power the Pi Touchscreen by plugging into the Pi?

I have the official raspberry Pi 7 inch touch screen, and I have mounted to it a Pi 2. Lately I have been using it and I have been plugging the power into the Pi itself. I however recently remember ...
0
votes
0answers
8 views

Java AWT full screen window / touch screen: mouse events “fall through”

I'm having a Scala (Java) app open a javax.swing.JFrame and put it to full screen; the physical display is a 3.5" touch screen on the GPIO. I just noticed that when I click on parts of my UI where ...
1
vote
1answer
23 views

Starting the Motion Service Automatically on Boot

I'm using the motion library on a raspberry pi zero with sketch. In order to get the motion server to start on boot, 've updated /etc/rc.local to include the following: sudo motion -c ~/.motion/...
0
votes
1answer
27 views

Do I need a resistor for a 3v3 led? [duplicate]

Begginer question, if the output voltage of the raspberry pi is 3.3v and my led voltage is 3.3v, do I still need a resistor? As far as I understand, if the voltage is the same you don't need to add a ...
1
vote
1answer
37 views

Why does my raspberry pi zero w crashes when controlling a DC motor with an L9232D and a 9g Servo motor?

I use this simple circuit to control a DC motor with an L293D, and a 9g servo motor with a Raspberry PI Zero W: I use the simple following code to test the circuit: from time import sleep import RPi....
0
votes
0answers
11 views

Cam Display Idea

I have an idea. I have a love boat ride (tunnel of Love ride) were 2 people get in a boat and follow a slow trough for about a 1/2 mile. While in the ride there are scenes, at one scene the people in ...
0
votes
1answer
23 views

small sound sensor not detected

The usecase of my project is when I hear the sound of clap then only the relay channel should get triggered. But in my case, the GPIO.input(SOUND_INPUT_PIN) is only giving me value 1(HIGH). The ...
0
votes
0answers
17 views

how to write log files to pendrive in raspberry pi 3

I'm trying configure RPI 3 for a 24*7 operation..i need to run Apache, java, php, SQL, j query from the pen drive and main code & OS from the SD card and i want to write log files to pen drive ...
1
vote
0answers
19 views

raspberry pi model b+ Not booting

I recently bought a raspberry pi 3 b+ from amazon and when I got it delivered the package was already opened, so I just want to check if my raspberry is working or not so I formatted a compatible sd ...
0
votes
0answers
23 views

How do you call upon Raspberry pi for VNC using name instead of IP?

I was trying to VNC into my Raspberry Pi, but but I couldn't find a way to set a static IP for it on Stretch. When I looking around, saw that someone VNCed through the name of the Pi (?). I was ...
0
votes
0answers
26 views

What options for low power transmission of photos

I'm looking at how to send images from one or more remote devices to a central server which is powered. The situation is I will have several devices which are physically isolated, outside and perhaps ...
0
votes
0answers
27 views

cant open image from rc.local

I would like to open image from rc.local. I am sure rc.local is getting called during boot as it execute/run test c++ code. I tried with various image viewer like gpicview , mirage. I can try with ...

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