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Questions tagged [pi-3]

For questions that apply specifically to the Raspberry Pi 3 and not other/all models.

0
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0answers
6 views

Import Error: No module named watson_developer_cloud

I'm trying to create a program that will send an image to the IBM Watson studio and use that to perform a computer vision image recognition analysis. Anyways, when I try to run the program, it only ...
0
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1answer
7 views

How do I control a headless Raspberry Pi 3 b+ via SSH from Ubuntu 18.04 LTS without a router?

There are many variations of this question that I've found on this site, but so far I haven't found an answer that solves my exact use case. Currently, I am able to SSH into my Raspberry Pi 3 b+ (...
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0answers
5 views

Lagging/freezing

We are receiving signals from hardware components that we need to measure very precisely down to the millisecond. It is all working very well until a minor freeze occurs roughly about once every 3 to ...
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0answers
8 views

Most reliable way to connect RPi to cellular network indoors?

I've researched various hardware dependencies, notably: GSM/SIM800 configurations I'm trying to determine which direction to go in for a project with the following constraints: predominately indoor ...
1
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1answer
87 views

How do I install default raspbian programs on a raspberry pi already running emulation station?

I have a Raspberry Pi 3 with a 32 GB SD card that I put a pre-made image with emulation station on. It launches emulation station on boot and I installed the desktop so that I can use the Pi like a ...
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1answer
13 views

Raspberry Pi Camera Taking Takes Blurry Pictures

I just got a camera for my raspberry pi 3, more specifically the Arducam 5 Megapixels 1080p Sensor (https://www.amazon.com/gp/product/B012V1HEP4/ref=ppx_yo_dt_b_asin_title_o01__o00_s00?ie=UTF8&psc=...
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5answers
2k views

Ubuntu Core Image - Unable to SSH into Raspberry Pi 3

I created install Ubuntu Core on a Raspberry Pi 3. I followed the instructions here: https://developer.ubuntu.com/core/get-started/raspberry-pi-2-3 I made it all the way to a screen that says what ...
0
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1answer
67 views

Error 500 when executing Flask Webserver

Straight to the point. I'm using flask web server to build my monitoring garden. with this tutorial: https://www.instructables.com/id/From-Data-to-Graph-a-Web-Jorney-With-Flask-and-SQL/ finally, I ...
0
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1answer
28 views

Servo robot with keyboard control

I am currently creating a design project that involves controlling several servo motors for a raspberry pi 3. I want to use a keyboard to control the direction of the motors, and I am using curses to ...
0
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1answer
111 views

Is there a good simulator for Raspberry Pi

Sorry to ask this kind of question. Is there any good simulator for Raspberry Pi? because I need to learn more about the raspberry pi but my problem that I can't buy all the sensors such as ...
4
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1answer
5k views

Does a Raspberry Pi 3 require antivirus

Is antivirus or anti-spy ware needed on the raspberry pi 3? The only thing I have found is a thread from 2012; https://www.raspberrypi.org/forums/viewtopic.php?f=62&t=10069 Just wondering if ...
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2answers
62 views

Raspberry Pi 3 Power Issue

I am using Raspberry Pi 3 Model B for my project purpose. The Pi 3 works fine when it is powered through a 5V/2A charger and I am able to use the inbuilt Bluetooth and Wifi using it, but when I try to ...
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1answer
70 views

Cannot Load Library “./pxcore.so” to autorun a python script on boot using systemd

I want to run a code at startup but I am getting this error below. The script works when running in python, but I am unsure how to allocate permissions or where to make a path to the pxcore.so file so ...
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1answer
2k views

raspberry pi as access point with captive portal

I recently got a raspberry pi. I have it set up as an access point in a standalone network (not connected to the internet). I can also serve a static website on this network. Ive been trying to set up ...
0
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1answer
77 views

Installing opencv-3.3.0-r5 on Gentoo 64 bit OS at Raspbery Pi 3B+

My linux environment is pi64 /home/demouser # uname -a Linux pi64 4.14.31-v8-b36f4e9e1984+ #1 SMP PREEMPT Sun Apr 1 14:15:34 BST 2018 aarch64 GNU/Linux First time, I use Porthole to emerge opencv-3....
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0answers
24 views

Radio Transmission

Yes, I pretty much a noob, but I was wondering if there is a way to program the Raspberry Pi in Assembly Code to transmit data via radio frequencies (like remote control) between itself and another ...
2
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1answer
23 views

Generating fast rise PWM signals using software GPIO

I want to use my Raspberry Pi 3 Model B (rev 1.2) as a source for fast rise PWM signal generation. The idea is to utilize RPi as part of a cheap TDR (time-domain reflectometry) setup. For anyone ...
0
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1answer
53 views

Service won't run python srcipt with privileges RASPBIAN JEESIE

I have script in python that need to be run with "sudo" keyword. Everything because I'm accessing "/dev/mem". Now I need to start this python script on RPi startup. So I create simple service that ...
1
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3answers
60 views

Raspberry Pi 3 states connected to the WiFi but not visible on access point (pi cannot be pinged either)

I have a Raspberry Pi 3 running raspbian-lite stretch(9.4) with updates installed. Sometimes when I have the following: Connected through serial (or via the on the lan IP address) ifconfig shows a ...
2
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2answers
19k views

tightvncserver - Displaying Grey Screen on Kali-Linux upon VNC Connection

PROBLEM: Upon connecting to my tightvncerver on port 5901, I am greeted with a grey screen with an 'X' for a cursor. Hardware: Raspberry Pi 3 Operating System: Kali Linux 0.6 Raspberry Pi 3 w/ ...
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0answers
11 views

Raspberry Pi 3 B won't boot up again, even after (supposedly) clean shutdown

everyone. So I am very new to Raspberry pi. I just installed Raspbian yesterday sing NOOBS, and it was successfully installed. I played around with it after install and even rebooted it (using the ...
6
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2answers
3k views

Access point as WiFi repeater, optional with bridge

I need a wireless access point that is bridged with the wired ethernet port and that is connected to another wifi internet router with a client connection as uplink. All devices connected to the RasPi ...
1
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1answer
16 views

Lipo Battery Voltage Drop When Pi 3B and LCD Screen Are Both Connected to Powerboost 1000

I have a Raspberry Pi 3B and LCD Controller Board connected to a Powerboost 1000 Basic. A Lipo Battery Charger is connected to the Powerboost as well. I noticed if I remove the LCD Controller board ...
1
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1answer
65 views

Disable all usb except edimax dongle (7811Un)

I am using raspberry pi 3 and edimax Wi-Fi dongle. I have some rules defined inside /etc/udev/rules.d/99-com.rules like what to do when edimax wifi dongle is connected/disconnected Vendor id I ...
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0answers
11 views

Configure Rasp 3 b+ for automatic configuration file (pac)

I need to configure my rasp 3 B+ so that I can connect to my corporate network. In my Mac, I go to settings, network , advanced, Proxies and then Automatic proxy configuration and enter the proxy ...
0
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1answer
72 views

Computer Monitor Buzzing

I just setup a RPi 3 with Raspbian, but I am getting a buzzing through my monitor. It is connected via an HDMI to DVI cable. When I turn off the monitor the buzzing stops. The monitor does not have ...
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2answers
15k views

The File “etc/network/interfaces” is basically empty

I've been trying to setup the Pi as a WiFi AP, so that I can use it in Hotels to allow multiple devices to use the same WiFi connection. On the net there are multiple tutorials on how to do this. Such ...
1
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1answer
22 views

No Wifi connection when HAT installed

When using a Hat for the Raspberry (MotoPi from Joy-It) the onboard wifi doesn't connect to my home wifi. But when removing the hat it just works fine. The strange thing is, that I've used the same ...
0
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1answer
60 views

How to set up Pi3 as access point without creating new subnet and without using bridge

I have a Pi3 with eth0 and wlan0 interfaces. It's plugged into router via Ethernet. would like to set it up as a wireless AP. The solutions available usually set up a new subnet. I don't want that. It ...
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2answers
45 views

Why can't I boot Raspberry Pi 3 Model B from 500 GiB USB HDD?

I am trying to boot my rapsberry pi 3 model B from an external HDD. I have written an Arch Linux ARM image to both my 16 GiB thumbdrive and 500 GiB HDD. I can boot from that thumbdrive, but the HDD ...
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3answers
65 views

Is it safe to connect 3v3 to GPIO

I'm using Pi 3 I have a line that gives 12V. I need to invoke something on Pi, when the line goes High. As I cannot connect the 12V to GPIO, I thought of using a relay, that will trigger on 12V, and ...
0
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1answer
63 views

Raspberry Pi completely running without a PC (SSH), a keyboard or a monitor

I run a script through the terminal created via Bitvise SSH Client that collects data with an accelerometer. Now I was wondering if it's possible to completely shut down the terminal and connection ...
0
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1answer
76 views

About multiple SPI on Raspberry Pi3

I'm tying to use MCP3008 to read the ADC signal from sensors. But I need to transfer the data through the LoRa module. Which is also the SPI interdace. The example of ping pong has been done. But ...
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3answers
77 views

How to choose a suitable display for pi 3 B+?

I'm currently looking for a display 5 inches or less for my PI, but there are a lot of information and since I'm quite new to the world of raspberry I'm looking for some help and guidance on where ...
1
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1answer
61 views

Share internet connection with mulitple Pi's

Let me first start by saying I am very new to this stuff, only about a week into looking at all the options out there. From what I have found Raspberry Pi will be what I need for a project and I know ...
0
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2answers
66 views

Virtual Reality with RPi 3

I am working on a project in which I am trying to combine two seperate USB webcamera's to create a pair for virtual 360 degree footage. Can RPi 3 encode this video and send it to a smartphone ...
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0answers
17 views

Configuratión mcp 3208 en raspberry pi 3 with spi

I have a problem in the configuration of the A / D converter I am working with the Pi 3B +, in case the problem is that I do not know if the configuration is ok, since it only throws a zero value ...
3
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2answers
8k views

Connect OV7670 camera to Raspberry Pi 3

I've recently bought an Arducam OV7670. The man who sold it to me told me that it was compatible with Raspberry Pi (naïve me to believe him). I've been googling but I've found nothing crystal clear. ...
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0answers
21 views

l2ping bluetooth not timing out fast enough

I have been experimenting with pinging a list of known Bluetooth MAC addresses for a tracking project with a Pi 3, however, the ping does not seem to time out until after 5-7 seconds if there is no ...
0
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0answers
26 views

What is the best model of raspberry pi 3 to use as browser on the tv? [on hold]

I want to use a raspberry pi to use as web broswer. The display is a TV. For example to watch live sport online. what is the best from this use between this model A+, B and B+?
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1answer
101 views

Rasberry Pi - network boot with old router

I apologize in advance if this is a stupid question, but I really don't have a good background knowledge about networking. I did try to google all this stuff, but I simply couldn't find anything ...
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0answers
35 views

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

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 ...
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2answers
1k views

POE Switch to Power the PI?

Sorry if this a repeated, I couldnt find anything similar. Most threads seems to be modifying the PI or splitting Ethernet. Will this setup work for powering the PI? 1) Juniper EC-2200 POE Switch (...
0
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1answer
72 views

Oscilloscope software that can be fed with data

When searching for oscilloscope sofware for any Raspberry Pi 3 OS I can't find any that I can feed data. Some are for special hardware I don't want to buy. I got my own ADC and since it outputs data ...
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1answer
79 views

Windows 10 core with Raspberry Pi

I amusing C# UWP and i am storing sensor data to a database. What I would like to do is send the Sensor name instead of the GPIO Number. So on pin_valuechanged() I like to assign the pinNumber a ...
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3answers
1k views

PoE Switch hat not working

So I got the new raspberry pi 3 b+ and also bought the PoE switch to power it using Ethernet. https://uk.pi-supply.com/products/pi-poe-switch-hat-power-over-ethernet-for-raspberry-pi I don't know if ...
2
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1answer
748 views

Android Things Raspberry pi 3 jack 3.5mm not working

I implemented an application run on Raspberry Pi 3 using Android Things. This application will be able to play rtsp video and output to screen via HDMI port. But the audio is not working with jack 3....
0
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1answer
20 views

Generating signals with Pi

I have a vector of 500 numbers and would like to output these at a sample rate of 1kHz, thus a signal time of 0.5seconds. Is there any way to do this using a Pi? Do the GPIO pins only allow for an On/...
0
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1answer
104 views

How to setup different static IPs for different SSIDs (different networks)? [duplicate]

I did configure a static IP for my home wifi connection, but now I wanna add another static IP for using it in another network but I don't know how to do it. Right now I have the following ...
0
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1answer
77 views

Torrentbox Hard Drive keeps unmounting when copying files. How to avoid it?

My external hard drive is connected to a powered usb hub (5v 3000mA) then connected to rpi3. Whenever I copy any file that would take more than 30 sec, it would unmount and I have to mount the next ...