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10 views

Binding PiCamera stream to GstWidget

Well, today I began to program in Python and I'm doing a graphical app with PyGtk in Anjuta. My first objective is to get the stream of the PiCamera in a window. But I'm getting problems to manage the ...
0
votes
0answers
8 views

Help getting the CTP (touch) part of my circular touchscreen connected and working

I purchased this circular touchscreen on Alibaba to use with a Raspberry Pi in my prototype. I told the manufacturer I was using a Pi and the screen does not connect to the Pi by default as it has a ...
0
votes
0answers
9 views

Sudden influx of “frame reassembly failed” messages after Raspbian update

Problem Looking in /var/log/syslog, I see a lot of messages like this: Bluetooth: hci0: Frame reassembly failed (-84) Here's a recent segment from the logs: Jul 9 02:23:34 apple-pi kernel: [ 3268....
2
votes
0answers
26 views

Accessing Raspberry Pi JTAG randomly fail

I am trying to debug a Raspberry Pi 3B (rev 1.2) bare metal application using JTAG. I have no JTAG adapter so I am using another Raspberry Pi (3B rev 1.2) as JTAG adapter. I am using OpenOCD and it ...
1
vote
2answers
53 views

Simple total counter

Looking for a simple input pulse counter for no more then 2000 counts per minute. Right now I have it set if gpio.input(countswitch): data["count"] += 1 which works but I get 100 plus counts for ...
0
votes
0answers
17 views

How to pass through usb serial data

I have two slave USB devices, one microcontroller and one real-time target machine (the latter is interfaced with a USB to RS232 cable). I would like to send serial data from the microcontroller to ...
6
votes
4answers
2k views

RPI3B+: What are the four components below the HDMI connector called?

I am trying to get the following RPI3B+ to work. Apparently the machine is booting ok, since I can see it using nmap on my local network: # nmap 192.168.0.23 Starting Nmap 7.70 ( https://nmap.org ) ...
1
vote
2answers
50 views

Raspberry Pi “Temporary failure in name resolution”

After many hours of googling and testing for a solution, I am stuck. I would really appreciate some advice. Situation - I have (5) Raspberry Pis 3B+ (RP) at various customer locations and I want to ...
2
votes
1answer
29 views

Can I connect RaspberryPi GPIO to Nintendo DS Buttons?

I was wondering if I can connect a Raspberry Pi to the buttons of a Nintendo DS. I have seen something similar on Youtube for the Switch controller. My goal is to control the buttons using a Raspberry ...
1
vote
1answer
21 views

Recover MineCraft pi world after Accidental system shutdown

While playing the MineCraft pi in my RPI 2B, Accidentally the system went off, and when i logon again Im only able to see the "create world" button. I cant find my last saved world. Is there any way ...
2
votes
1answer
50 views

see output from c++ program which was started by rc.local

is there a possibility to see output (f.e. std cout << ...) from my program which was started from rc.local script when i am logged into my Rpi via SSH?
2
votes
2answers
52 views

how to update customised OS image to a newer version keeping modification?

I am using Hypriot as OS . I have done modifications to some file and script,and i have add new service on boot . I would like to know if i have a newer version of Hypriot how can i update my ...
0
votes
1answer
28 views

Create new users and put them in a group with low privilege

I try to create new users and put them in a group with low privilege. I want them to only have access to their home (not to other folders). I tried useradd but the new user has access to all folders. ...
1
vote
1answer
28 views

Rpi to read windows and SAMBA folder files

I want to use a NEW RPi 3b+ to play music files hosted on another RPi and Windows a PC. The RPi with media files runs a SAMBA server with a 4TB HDD with all music and other files on it. The RPi also ...
-1
votes
1answer
25 views

Unable to locate package libdbus-1

So, I'm trying to run the following code on my Raspberry Pi 3b+: sudo apt-get update && sudo apt-get install -y libdbus-1{,-dev} And I get the following result: Unable to locate package ...
0
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0answers
16 views

Raspberry apache server not showing images and the site is acting weird

I'm hosting a site made with codeigniter in a raspberry 3 with Apache which is basically a form and the pictures aren't showing. I see the files are with user and group www-data and I'm trying to ...
0
votes
1answer
54 views

Created a Raspberry Pi 3B+ Wireless Hotspot, how can I extend the hotspot via Ethernet

I have successfully created a WiFi hotspot for my RPi 3B+ using a Hologram Nova and the embedded WiFi card on the Pi. However I realized that the ethernet interface has disappeared and cannot extend ...
1
vote
1answer
67 views

are the Zero and Zero W software compatible?

I'm having problems on a brand new Zero, I prepared the SD on a Zero W to install updates and other via internet, I disabled bluetooth and I left wifi enebled in case I'll need to change something on ...
0
votes
0answers
44 views

Confused on how to increase speed of crypto mining (Raspberry Pi 3B+)

According to the top answer on this post, this guy is getting 400/KH per Pi. I'm getting something like 10. The command I'm running just includes the pool stratum, my worker name, and password. No ...
2
votes
1answer
22 views

Updating python code with usb

I have a folder in the pi/home directory with python code. Is there a way to update (replace) these files by using one of the usb ports? I would like to be able to plug in the usb, reboot the pi, if ...
0
votes
0answers
16 views

Sending a list of commands

I have a list of user created commands that get sent serially with a set wait time in seconds. What is the best way to do this in python and have the ability to hit a button to start, pause and stop ...
1
vote
1answer
27 views

Piscope resolution

I generate a carrier frequency at 38KHz and I see the output LIVE in the piscope, but the "pulse widths" are not perfect ... the pulses are more or less wide when they must all have the same width. It ...
2
votes
2answers
27 views

Play multiple mp3 files

I need to be able to play up to 8 mp3 files at the same time. Is this possible with the raspberry pi 3b+? They need to be started in python code.
0
votes
0answers
12 views

Can i send data from sensor to website or mobile application [closed]

I'm new to this computer science and embedded systems since I'm from mechanical background. Actually I'm under going an project in which I need to sense data from sensor using raspberry pi. I need to ...
0
votes
0answers
17 views

over speed detection an recognition [closed]

I work on a school project that uses an arduino card and a raspberry pi card to detect and film vehicles in excess of speed ... I want that when the vehicle crosses my IR sensor speed is calculated by ...
0
votes
0answers
34 views

Error installing lirc on raspberry pi 3

I would like to install lirc on my raspberry pi 3B+. Unfortunately there is an error message when installing with apt-get. I just reinstalled raspbian using Noobs to avoid any problems due to changed ...
0
votes
0answers
10 views

cv2.namedWindow freezes in Raspberry Pi 4

I'm trying to open a namedWindow using openCV in raspberry pi but it freezes after cv2.namedWindow("image")line. However, the project works in Windows. Before it freezes it prints the following ...
1
vote
0answers
19 views

Collect video from camera and display it in a navigator

I'm trying to collect live video stream from a camera. The camera output is analogic so I'm using an Analogic to USB converter connected to my Raspberry. I'm looking for a good solution to collect the ...
1
vote
1answer
23 views

How to get song information using PulseAudio?

I want to have a script that is continuously running in the background while I connect my phone via Bluetooth to play music. I need the script to get the total time length of the track, the current ...
2
votes
1answer
28 views

1-wire device not detected

I'm having trouble getting a 1-wire sensor to be detected on my Raspberry Pi Model 3 B+. The sensor is this temperature and humidity sensor. I have wired the red wire to 3.3V, the black wire to ...
-1
votes
0answers
15 views

Can't connect a Pi Zero's console to Pi 3 B+ as a terminal via UARTs (3B+ to 3B+ and Zero to Zero both work ok)

After nearly two months I'm still my head against the wall with PI3 B+ UART, has anyone ever got the UART to work. I want to connect a zero's console to a B3+'s UART as a terminal. I can easily do ...
1
vote
1answer
35 views

GPIO generate 38KHz carrier frequency , understand duty cycle

I try to understand how to generate IR carrier frequency with the raspberry and how PWM and NEC work visually. I learn PWM but I cannot find any explication of duty cycle. Ok it's a percentage of HIGH ...
0
votes
0answers
15 views

video flickering while streaming with uvc-gadget and g_webcam on raspberry pi 3b+

I am using raspberry pi zero w emulated as a webcam using uvc-gadget. It works plug and play on Nvidia-jetson-nano, or any other pc or laptop. But I see too many choppy frames when I use it with my ...
1
vote
0answers
23 views

Different recording results under same code and raspberry pi

I would like to record videos using this code: RecordIntervalTime = 30*60 # 30 min def camRecord(): with picamera.PiCamera() as camera: camera.resolution = (640, 480) camera.framerate = 24 ...
1
vote
0answers
13 views

keepalive in terminal via vnc

Raspberry Pi 3, Raspbian stretch, all updated. I can connect to Raspberry via VNC from My MacBook Pro 10.13.6 and do anything I want to in terminal. But every minute an enter key is executed. On the ...
0
votes
0answers
17 views

how to play audio from python on Rasbian Stretch Lite?

I would like to play selected audio files through the built-in audio port on a Raspberry 3 that is running Rasbian Stretch Lite, from a python program. Unfortunately, none of the libraries or external ...
0
votes
1answer
20 views

Linphone for Raspberry error

I finish, using source and without errors, the linphone installation on 'stretch' following the instructions on linphone. trying to start `linphonec', I'm receiving the following error message: $ ...
2
votes
0answers
25 views

Raspberry Pi 3B+ with LEDs WS2812B and speaker

I just started making my first project with Raspberry Pi 3 Model B+ and I found an amazing tutorial ("https://tutorials-raspberrypi.com/connect-control-raspberry-pi-ws2812-rgb-led-strips/"). I am ...
2
votes
2answers
266 views

how does the Raspberry Pi PoE shield work?

I would like to do PoE for some Pies, but I dont like the real-estate the PoE hat takes up. what exactly is required for the PoE to work? what pins must I use on the raspberry PI, and what does the ...
2
votes
1answer
16 views

Use both UART(ttyS0 and ttyAMA0) of raspberry pi Zero W

Is it possible to use both the ttyS0 and ttyAMA0 of raspberry pi zero w at the same time? I don't need the Bluetooth functionality.
0
votes
0answers
20 views

Cannot connect Deluge Thin Client to RPie Deluge Server

I'm trying to setup my RPi 3 (buster) with a deluge server and a VPN (Private Internet Access) I have followed theses guides https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=223589 https:/...
0
votes
2answers
48 views

Convert 12V to 5V to power RaspberryPi

I have an Eleksmaker laser cutter which has a board with a 12V output (see top of image). I would like to power my RaspberryPi using this 12V output. What is the advantage of powering the ...
1
vote
1answer
39 views

Using a Raspberry Pi to connect to a Public Hotspot

Is there a way to use a Raspberry Pi to take a (public) WiFi Signal and create a hotspot such that devices can connect wirelessly to the internet via the Pi? Moreover, can this be done if a network ...
0
votes
0answers
13 views

Gpio state manipulation if subroccess is finished?

I have my raspberry pi 3 running a python script that manipulates some strings and according to that they sometimes pipped to minimodem. How can i be sure that the pipped subprocess is finished so I ...
0
votes
0answers
25 views

Read VW Cluster Adapter Over GPIO

So, i'm trying to develop a new cluster using my Pi. I've built the entire thing using a WiFi OBD-II Adapter & Python. Then I hit a stumpling block, OBD cannot read things like Indicators/Cruise ...
0
votes
0answers
27 views

Single webcam using /dev/video0 and /dev/video1

With just one webcam attached, I get two devices: /dev/video0 and /dev/video1 They appear to have identical attributes. It's random which one gets bound to which entry, and only 1 of them actually ...
0
votes
0answers
20 views

Detect fire with pi cam module

I have a python script that uses a usb cam to detect fire with opencv, it worked well until changed to the picamera and now i get this error when i run the code: File "seeFire.py", line 23, in ...
0
votes
0answers
22 views

keyboard library - ImportError: You must be root to use this library on linux

I'm trying to close my program when the esc key is pressed. For this I found the keyboard library. import keyboard #pip install keyboard t=0 while True: print (t) t=t+1 if keyboard....
0
votes
0answers
21 views

LCD Display 2x16 ist recognized from my Pi [closed]

I connected a 2x16 LCD Display(from Quapass) to my Raspberry Pi 3b+. The SDA to pin 3 (GPIO 2), SCL pin 5 (GPIO 3), GND to pin 6 and VCC to pin 2. The Display is turned on and the screen is blue. The ...
2
votes
1answer
39 views

Raspberry Pi 3 b+ seemed to be dead because of excessive vlotage of around 5.5 volts. Can anybody help?

My rapsberry pi 3 b+ constantly showed the under-voltage warning, so I connected my PSU to th RPI and setted the output voltage to be around 5.5v. I measured a voltage of around 5.2v when the RPI was ...

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