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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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1answer
6 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+ (...
0
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0answers
4 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 ...
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 ...
-1
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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 ...
0
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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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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 ...
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 ...
2
votes
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 ...
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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 ...
1
vote
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 ...
0
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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 ...
1
vote
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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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 ...
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+?
1
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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
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 ...
0
votes
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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0answers
23 views

piscope SPI pin activity even though the SPI device is not connected

my final goal is to use python (spidev) to communicate with a BMS chip. Until now I was quite unsuccessful, thats why I wanted to use piscope to track the activity of the SPI pins. The device is not ...
0
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0answers
22 views

DS18B20 & Pi 3+

I'm not getting a w1_slave, and all I'm getting is 00-xx0000 when the DS18B20 isn't burning my fingertip. I went for green for ground, which is on the top right plug from this perspective. I spliced ...
0
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0answers
13 views

communicate agilent E3640a with raspberry pi 3 using gpib_usb_hs

i have to communicate agilent E3640a with raspberry pi 3 using gpib_usb_hs what is the solution to install driver gpib in raspberry to communicate to agilent e3640a
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0answers
6 views

ReSpeaker 2Mic Expansion Board Not Showing Up Under “aplay -l”

I am very new to the raspberry pi. I am setting up the Respeaker 2Mic Expansion board on my Raspberry Pi 3 B+. I have downloaded the files from GitHub through the terminal, have physically connected ...
1
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0answers
25 views

Raspberry Pi 3 B+ LED Light Blink not working

I am trying to get my LED to blink once, but it is not working. I connected the brown wire to pin 6 (Ground), and the red to pin 7 (GPIO 4). I watched a tutorial on connecting the circuit but it is ...
1
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0answers
23 views

Android things keeps restarting

Trying to install Android Things OS on RPi3 B V1.2, but before I can -- or shortly after -- I get to the set-up screen, the OS reboots. This happens repeatedly. Rasperian works great under CPU and ...
0
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0answers
17 views

Configuración del conversor MCP 3208 para la raspberry pi 3B [closed]

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 ...
0
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0answers
26 views

How can I use the free version of Qt to create a GUI for the Raspberry Pi?

I am working on a project that requires high-medium quality GUI. I am thinking of cross compiling from Windows to Raspberry Pi or from Ubuntu to Raspberry Pi. Also, I do not know which one of those ...
0
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0answers
27 views

GPIO number vs Pin number. Which to use?

I am writing a code for an ultrasonic distance sensor. The code worked fine when i used the gpio numbering system for the wires connecting to the gpios and sensor. As soon as i connected the sensor to ...
-1
votes
3answers
42 views

runing command on startup

I need to execute this command on the RASPBERRY PI bootup cd RPi_Cam_Web_Interface && ./install.sh and also follows dual ENTER keys with 5 seconds interval for each.
0
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0answers
14 views

How to track steps of multiple stepper motors with different frequencies

I’m working on a small stepper motor driven vehicle powered by a Raspberry Pi 3B. For the motor control, I am using the hardPWM function of the pigpio library from Joan, which is working great. I can ...
0
votes
1answer
31 views

Raspberry Pi Won't Boot (Only Red LED On)

I have a Raspberry Pi 3B+. For several months it worked perfectly fine, but one day it just stopped booting and only getting to the red LED. I've tried buying a new microSD but the same behavior keeps ...
0
votes
0answers
39 views

Send IP packets between two Arduino or two Raspberry boards

I have two Arduino boards and I want to do a small project with them. I want them the do the following: Firstly, I want to send an IP packet through the network from the first Arduino to the other. ...
0
votes
0answers
17 views

Raspberry Pi Camera to load face recognition trained model located in desktop

I'm setting up a security application to have real-time face recognition on Rasp Pi Camera. The face dataset are gathered using laptop and the trained model are also located in laptop directory. Is ...
0
votes
1answer
25 views

How do I increase the RPi 3 minimum clock speed without using force_turbo?

So I don't want to change my max clock speed, but I want to slightly increase the minimum clock speed at light load from 600MHz to 800MHz. However, if I set these options in my /boot/config.txt/ and ...
0
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0answers
18 views

ffmpeg - Video Audio Capture with Compression

I am running ffmpeg script that captures webcam video and microphone audio and then uses video compression before saving the audio/video mp4 file. The script works on my desktop but cause error on my ...
0
votes
0answers
15 views

Can't set PS3 Eye USB camera as default sound device in alsamixer

When I try to change default sound card in alsamixer to USB PS3 Eye camera (which is detected as USB Camera-B4.04.27.1), I'm getting following error: cannot load mixer controls: Invalid argument I ...
0
votes
1answer
48 views

What is the max voltage that the Raspberry Pi can handle over the USB plug? [duplicate]

I've been trying to make my own lower-cost power supply for the Raspberry Pi (my cellphone wall adapters don't provide clean enough 5V power for the Pi 3B+) with a 12V wall wart I have laying around ...
0
votes
1answer
26 views

H-Bridge motor driver with Raspberry pi [closed]

i am using L298N h-bridge with Raspberry pi to drive my motors. I am using 4 motors and each motor is of 3V and 120mA. But, my teacher has asked me to shift to powerful motors and i have bought 2 new ...
0
votes
0answers
22 views

How to stream audio/video from Raspberry Pi to Windows PC

I have a Raspberry Pi 3b that I am using as a radio server with a rtl-sdr (Realtec Software Defined Radio). I would like to have any audio coming from the Raspberry Pi to be streamed to my windows 10 ...
0
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0answers
20 views

Getting firefox to stop crashing[parrotsec rpi3b+]

I have the rpi3b+ and i can get it to boot to desktop but getting firefox to load an not crash is a chore having firefox uo an running woluld make running the system easier so i could trouble shoot ...
0
votes
2answers
43 views

WEP WiFi Hotspot

So I want to use my DS online again, and what I need to do is get a router with WEP seurity, or a router without security. So I decided to use my Pi 3 B as a WiFi hotspot. But all the stuff I find is ...
0
votes
1answer
39 views

Multithreading Python Raspberry Pi 3 B+

My Raspberry Pi 3 b+ is reading by Modbus the values of an irradiation sensor, processing all the data, showing it in a plot and showing some warnings (if the irradiation ramp is higher than 5%). I ...
1
vote
1answer
31 views

Installing XFCE4 on raspberry Pi

I want to try out XFCE4 on the raspberry pi. This is mainly because of two reasons: ► I just like XFCE ► I want a bit more flexibility when it comes to GUI scaling - I have a 240x320 LCD and need to ...
0
votes
1answer
20 views

I2C Level Shifter 3,3V Raspi 5V Arduino Mega

I am connecting Raspi (Master) via I2C with Arduino Mega (Slave). Do I need a level shifter for this or is it non compulsory? As of now my code runs for some time before i get a Remote I/O Error ...
0
votes
0answers
45 views

Fragile code on rasp pi running IOT

I'm using a Pi 3 with Android Things to operate some relays that control valves on an irrigation system. The system uses the internet to get a weather forecast to work how much water to use, and uses ...
0
votes
0answers
11 views

How to configure keysettings for each game individually for picade?

I have the picade from pimoroni and use it for example with the C64 emulator. Within the picade there is the special Picade PCB board which does the keymapping that should be reprogrammable. My ...
0
votes
1answer
21 views

SenseHat joystick loop consumes 100% cpu load

After messing around with the SenseHAT for the Raspberry Pi (a Model 3B in my case) and testing the LEDs and sensors, I wanted to try out the included joystick as well. Naively going after the "...
0
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0answers
23 views

Resilio Sync vanishes without notice

I have a raspberry pi 3 here with the latest (for today ;-) raspbian on it. Also the latest version of resilio sync 2.6.3. I have installed it so that it will automatically start at boot etc. When ...
1
vote
1answer
47 views

Runtime Warning: This channel is already in use

I am writing a code for Ultrasonic distance sensor. I have wired all the things perfectly and written the code for it but somehow it gives a runtime error of the channel already being in use. Below is ...
1
vote
1answer
28 views

Libboost package installion error on Raspberry pi 3b+

Command: sudo apt-get install libboost1.50-all-dev Result: Error: Could not find any package by globe and regex libboost1.50-all-dev Error: Unable to locate package libboost1.50-all-dev
2
votes
0answers
39 views

How can I install the latest kernel from kernel.org to Arch Linux ARM for Raspberry Pi 3 model B?

I am using Arch Linux on Raspberry Pi 3 model B. I want to install a newer kernel (currently I have 4.14.94-1-ARCH kernel installed) I have downloaded and compiled the mainline kernel 5.0-rc5, which ...
-2
votes
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 ...