All Questions

0
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0answers
5 views

Original Raspberry Pi B, video playback choppy on Pi_Video_Looper software from Adafruit

Installed NOOBS on an 8GB SD card and installed Raspbian. Then, installed Adafruit's Pi Video Looper. Inserting a USB stick with a video, the 1280x720p video played back choppy, not fluid. I severely ...
0
votes
0answers
7 views

Unable to detect pi cam

I have a RPi 2 B for which I recently got a PiCam. I connected it to my Pi and when I powered the Pi a red LED on the cam came on. I tried enabling the camera module in sudo raspi-config , it even ...
0
votes
1answer
11 views

MCP3008 and Raspberry Pi Zero

Can I use MCP3008 to input analog signals to Raspberry Pi Zero? If not, Which is the cheapest version of Raspberry Pi?
0
votes
0answers
5 views

Keyboard layout Odoo PosBox

I'm using a Raspberry Pi 2 Model B Rev 1.1 with Raspbian GNU/Linux 9 (stretch). When I Try to change the keyboard layout in raspi-config I get following error: pi@raspberrypi:~ $ sudo raspi-config ...
0
votes
1answer
10 views

Help needed with GPIO and a remote controlled gate relay switch

I am very confused and hoping someone can point me in the right direction. What I would like to achieve is converting an external relay switch (from a normal everyday gate receiver) into a signal ...
0
votes
0answers
9 views

5v pin usage for 433mz transmitter receiver

I've bought a 433mhz transmitter receiver and I made a check on model SODIAL(R) 015274A2 the strange is in two links we have 2 differente specs, one says: https://www.amazon.com/SODIAL-433Mhz-...
0
votes
0answers
4 views

No IP after ifup

I have a problem with the roaming option of wpa_supplicant on the raspberry pi. I tried to configure roaming and it works, but far from good. Most of the time the pi just dont connect to another ...
0
votes
0answers
6 views

raspberrypi-bootloader error during apt-get upgrade after restore form backup, how to fix?

I recently restored a pi 3 from a backup. Before the incident that required the restore I had it booting from a USB SSD hard drive. To restore the operating system I simply copied the root directory ...
0
votes
1answer
16 views

Why is my RTC DS3231 but seems DS1307?

I bought a RTC DS3231 because of the accuraty of time (2ppm, I was searching an accurate RTC). When I received it, I checked that in the encapsulating it is as well marked like DS3231. But, after ...
0
votes
0answers
9 views

No response of rasperry while using selenium with python - code works fine on other device

i wrote a python code using selenium to interact with a headless browser. Now I'm trying to transfer the program to my raspberry so I don't have to keep my Laptop online all the time. I altered the ...
0
votes
1answer
9 views

Power Raspberry Pi using GPIO Pins and a 10A supply with 7805

I am currently working on a project where i have micro-controller,stepper drivers etc all powered through a single 12v 10a power supply. I was planning to use the same supply to power the raspberry pi ...
-1
votes
2answers
16 views

How can i Get 5 Volt output with GPIO

I am using Raspberry Pi 3 B+ and I want to run a 5 volt DC motor with RPi.GPIO, I have written a code: import RPi.GPIO as GPIO from pip._vendor.distlib.compat import raw_input u = raw_input('how ...
0
votes
1answer
17 views

What problems can occur when unplugging a (sync'd) USB drive?

I want to know if there are any specific technical reasons for not just unplugging a USB drive that is still mounted, provided: 1) All open files on the stick have been written to and closed 2) The ...
0
votes
0answers
19 views

Raspberry pi 2 wont boot without touchscreen

I know, this sounds like similar responses. I have tried editing config.txt however it appears that some code in it is still running after i boot with the raspberry pi with a touch screen. I did also ...
0
votes
1answer
18 views

Verify WiFi Settings Will Work via Command Line

I'm remoting into a RPi Zero W using SSH. The RPi is connected to the internet via Ethernet cable. I want to set-up the WiFi at the current remote location and check that it will work when the ...
0
votes
0answers
10 views

Retropie: Start with netplay sends me back to the menu

I'm trying to start netplay and it works on the other raspberry but on mine if I start it with netplay it sends me back to the menu. I updated everything. Anyone any suggestions
0
votes
0answers
23 views

I’ve replaced my rack mount server with a raspberry pi. It is evident my server’s processing power was underutilized [on hold]

Can anyone provide me with an example of activity that would stress test my raspberry pi?
0
votes
0answers
12 views

No network out of the box?

New Rpi 3B+, fresh download of Raspian image, Boots OK, Goes through the setup (localization, time zone, etc), and even finds my WiFi AP and asks for my password. But, WiFi says "Wlan0 not associated"...
0
votes
0answers
13 views

Can I connect an HC-SR04 to a PCA9685

I currently have a setup that includes two HC-SR04 sensors, a breadboard and some LEDs. I can control the LEDs based on the distance readings from each sensor just fine. I want to add more senors and ...
0
votes
0answers
9 views

Changing desktop background via bash

I'm trying to adjust the background on my Raspberry Pi via a bash script but I can't seem to find a way to do it without using a GUI. Does anyone know a way of doing this? Thanks, Richard
-1
votes
0answers
10 views

Open 2 chromium Windows 1 on each screen

I have a dual screen setup (fb0, fb1) and was wondering what's the best way to open a web-browser window in full mode one on each screen at boot. Each will have a diff url. Using latest raspbian on a ...
0
votes
0answers
17 views

Rpi3 Bluetooth hotspot continuously from iPhone

I'm new to Raspberry world, I received a pi3 model as a gift. I noted that there is a generalized problem when Wi-Fi and Bluetooth modules work at the same time, for example with a Bluetooth mouse/...
0
votes
1answer
15 views

When powering up my raspberry i dont get a screen

When you plug in power cabel and hdmi with no SDcard will it promt on screen? Or do i need an OS to even get it to promt? Just got mine and i cant get it to promt on my screen.
2
votes
2answers
20 views

Hardware Level Query for Pi Version

Is there a way you can query the model and revision of a Pi from a script without accessing files that are generated at install time for the OS? I have a project where a web page needs to display the ...
0
votes
0answers
20 views

spi/mcp3008 trouble with getting a reading from chip, all channels read 0 (zero)

Pi model: Pi 3 A+ Os: Raspbian GNU/Linux 9 (stretch) <- it's stretch lite SPI: On Loop back test: spi mode: 0x0 bits per word: 8 max speed: 500000 Hz (500 KHz) TX | FF FF FF FF FF FF 40 00 00 ...
0
votes
0answers
21 views

Raspberry Pi 3 Model B - SSH server config switches to disabled over time?

I have been using SSH remotely, enabled it though sudo raspi-config, and then a week or so later I tried to connect through PuTTy and it timed out. Checked the config and it was disabled... Any ideas ...
0
votes
1answer
24 views

Send data from raspberry pi to another raspberry pi

I'm currently working on a project where I have 2 RPIs both with multiple sensors e.g. dht22, sw-420, photoelectric IR optocoupler and they are connected to cloudMQTT. What I need is that the data ...
0
votes
1answer
35 views

Cannot resolve local hostname of my Raspberry Pi

Currently I am using a pi 3 model B+ as a mopidy server. I set this up at home and I was able to access the pi with the hostname from a browser (e.g. going to http://hostname.local/ in a browser). I ...
0
votes
0answers
10 views

Multiple GPIO.add_event_detect callbacks results in incorrect expected output

I am currently working with a differential drive robot which has two wheel encoders connected to GPIO Pins 5 and 23. I managed to obtain velocity information based on the pulse time information ...
0
votes
1answer
26 views

raspivid doesn't include b-frames

I'm streaming raw h264 using raspivid on Raspberry Pi 3 and PiCam v1 . However, even I set the h264 profile to main or high, stream only contains I and P frames. Here is the command that I use for ...
0
votes
1answer
22 views

Transfer files from my old SD card to a new one

Totally lost on this. I accidentally fried my pi by connecting the wires on a Motor driver the wrong way round! So, new PI and as I didn't update Raspbian I had to download Noobs to a new card. Up and ...
0
votes
0answers
6 views

RPI Motion service delay on restart

Is there any way to delay the start of the Motion service on RPI restart? I'm having an issue where v4l does not make it yet to provide /dev/video0 but Motion is already trying to open it and ...
0
votes
0answers
16 views

Capture stereo image using IVMECH's IVPort v2

I have the IVMECH v2 (a raspberry camera multiplexer) and want to capture a image pair (1 from each of the 2 cameras) as close together as possible. Which code should I be looking at from their github?...
0
votes
2answers
20 views

Get different values from potentiometer even not touching

I have a potentiometer that is used to adjust volume level along with MCP3008 but even if I don't touch it, its values are going and coming as following. Press Ctrl-C to quit... Channel 0 minus 1: ...
0
votes
0answers
21 views

Pi 3B, 2 Servos and 2 Ultrasonic sensors. Power Supply needed

So right now I have the following items in front of me: Raspberry Pi Model 3B The power cable / plug that comes with it 2x MG995 Servo motors (<- open short compact datasheet for voltage info) 2x ...
0
votes
0answers
27 views

Connecting Raspberry Pi Zero W to wifi

I've just set up a Raspberry Pi Zero W - my first Raspberry Pi. I've loaded Raspbian into it without trouble, but I can't connect it to WiFi. It can find my home network easily, and lets me key in ...
0
votes
0answers
16 views

3 B+ SD card partitions

Looking at the SD Card (32) it has 6 partitions, I would like to use berryboot and have a choice of OS's there are only 2 partitions used on the SD card, can I or should I expand the the 2 used ones ...
0
votes
2answers
19 views

Raspbian Sretch: notify-send does not display message on desktop

I have installed libnotify-bin, and notify-osd All looks good. Yet when I do $notify-send 'hello' I see nothing Is there a service that I should turn on or something? Jerry
0
votes
0answers
14 views

Python PiCamera V2 won't take bmp images, why the errors?

from picamera import PiCamera import time camera = PiCamera() camera.resolution = (3280,2464) time.sleep(2) camera.capture("test1.bmp") # This code doesn't work #camera.capture("test1.jpg") # This ...
0
votes
0answers
10 views

Pygame initalisation for TFT on /dev/fb1 only succeeds as root

I connected a 320x240 TFT to my Raspberry Pi A+ running Raspbian stretch via SPI and set it up as fbtft_device. It shows up in /dev/fb1 and I can write images to it via pygame. I initialize it like ...
1
vote
2answers
74 views

How to make ups hat run safe shutdown on raspberry when disconnected from the power source

It can be long discussion, because there is no single solution around this, so, to cut the story short, I will tell where I stuck on my way. It is AndroidAuto (media centre in car on raspi) project I'...
0
votes
1answer
42 views

Connecting Raspberry Pi 3 with Huawei Surfstick 372

I tried to connect my Raspberry Pi with the Huawei Surfstick. All the tutorials i watched so far didn't helped me. If i plug in the Surfstick the raspberry shows that it is associated with it and has ...
0
votes
3answers
45 views

How to edit Raspberry Pi files from SD card on Windows machine?

I am distributing multiple Raspberry Pi OS images, all images are almost identical, the only difference is that there is one file /usr/MyFolder/MyFile.txt which content is different for different ...
0
votes
0answers
17 views

Waveshare 3.5 (A) display speed 41000000 not work

i had a real waveshare 3.5 lcd. and, i try to edit config.txt. i'm try to edited speed=41000000,fps=60 and speed=36000000,fps=60. refresh rate is worked so smoothly! but display's color is terrible. i ...
0
votes
0answers
7 views

Frequencies available for wavechaining using PIGPIO library

I am working with the PIGPIO library to run stepper motors. I am using wavechains to the STEP pin of the driver. I need help regarding the possible pulse frequencies available for wavechaining. I ...
0
votes
0answers
12 views

Simple network manager application for 5inch display

I want to install on my Raspbian Lite (I already installed basic xinit packages and I'm able to run a graphical jar app without problem) a simple network configuration with GUI. My goal is to connect ...
0
votes
1answer
16 views

Retropie boots to 640x480 resolution over HDMI

I flashed the latest Retropie image (4.4) and it boots with a resolution of 640x480 when connected over HDMI to my 4k TV. I used the correct Retropie image for my Pi 3. I confirmed the screen ...
0
votes
2answers
32 views

pi-hole acting as nameserver for a domain?

I feel that I may be making a mistake in my plans to host my own DNS for a domain I own. I want devices within the private network to all have subdomains to my main domain, e.g. laptop.example.com, ...
-1
votes
0answers
25 views

Power management in Windows IOT

Because my project is in the field and not in a lab, power consumption is a significant issue. According to specification an idle Raspberry Pi 3B+ bare board has a current draw of 330mA. Long term ...
0
votes
1answer
37 views

VNC without pass from external internet

Problem I want to use raspberryPi's Chrome from my Mac in order to watch some videos. In order to do that, I am trying to make VNC connection. Condition raspberry pi and my Mac uses different ...

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