All Questions

2
votes
1answer
23 views

Pi 3B addressable physical memory

Using valgrind, I have found a program (written by co-worker) receives a bus error: Non-existent physical address at address 0x4859008 This had me wondering how physical memory was mapped. I read ...
2
votes
2answers
62 views

data packet of hex values sent over serial

I have googled, read, experimented etc and still have had no luck sending a packet of 5 hex values over serial. Here is what I have tried: import serial import time ser = serial.Serial( port='...
1
vote
1answer
40 views

How to cross compile OpenCV for the Raspberry PI Zero?

Hi so I've got a camera module for my Pi Zero and wanted to play around with OpenCV and Python. Looking around google, if found a few guides to get OpenCV to a Raspberry but most included to either ...
2
votes
1answer
44 views

pwmWrite() does not change dutycycle immediately

I'm using wiringPi for PWM on BCM18. I tried to use this to generate a STROBE-equivalent signal to turn ON the LED for the Camera Capture. My intention is to synchronize the LED-ON to shutter opening (...
0
votes
1answer
16 views

Error installing rpi.gpio on minibian

I am new to raspberry pi and following a series of online tutorials. I installed minibian according to the tutorial. everything was working fine until I had to install rpi.gpio. I am getting the ...
1
vote
0answers
16 views

Can we do zoom-in and zoom-out while video is live streaming? by using raspberry pi camera?

Can I do zoom-in and zoom-out, while live streaming the video using the raspberry pi camera? Is there any python code to do so? I am unable to zoom the video while live streaming. Please help me with ...
0
votes
2answers
82 views

Connecting 32 magnetic sensors

I would like to build an organ pedal board and use Raspberry Pi as signal processor. The pedal board will have 32 inputs, one for each key. I am planning to use magnetic sensors (like A3144), which, ...
0
votes
1answer
52 views

Python code to use Adafruit motor shield v1 with Pi 3

It is dangerous to run motors directly from the Pi, hence we need a motor shield. I own an Adafruit arduino motor shield clone: https://learn.adafruit.com/adafruit-motor-shield Note: I'm aware about ...
0
votes
0answers
17 views

DSP control card and Raspberry pi: [closed]

How to set up DSP control card as Rapsberry Pi slave, with GPIO pin 33 and pin 34 for I2C communication? Any Idea?
0
votes
0answers
25 views

How to Capture Image on Raspberry Pi using USB Webcam and then Process it on Remote Desktop?

I'm trying to build a human detector system. I have a USB camera connected to a raspberry pi. The Raspberry Pi along with the USB Camera is located at the ceiling of a room. I have already developed ...
1
vote
1answer
32 views

Play a defined set of MP3's on defined days

am new to Python and have been struggling to create a workable script for a friends project - am hoping someone can point me in the right direction! The script is to control playback of mp3 files ...
0
votes
1answer
39 views

Raspberry + Fedora, wrong CPU load average

For some reason, my "top" command is showing wrong cpu load average. Like 100% cpu usage everytime, but, in fact, the cpu is 100% idle. It's a Raspberry 3, running Fedora 28. CPU temperature is below ...
0
votes
1answer
22 views

Can't see my Pi on the connected devices on my phone anymore

I'm a complete beginner concerning the Raspberry Pi. I have an Pi 3 model B and I was working on an RFID project. Everything was working fine until I wanted to power off my Pi with sudo halt to do ...
2
votes
1answer
43 views

Are there reliable methods for connecting/reconnecting to multiple bluetooth LE devices to a raspberry Pi?

I've been trying to get a bluetooth LE IoT set up to work with multiple bluetooth LE devices that periodically turn on and transmit. I'm using code similar to https://engineersportal.com/raspberry-pi-...
1
vote
1answer
35 views

How can I delete a python script from rasperry pi?

I recently have installed a script that didn't work properly, and now I want to remove it. The script allowed the pi to boot when pin 5 was connected to ground with a resistor, but it doesn't work and ...
1
vote
0answers
17 views

Can't connect to Raspberry Pi Zero W over USB SSH

I'm trying to login to my Raspberry Pi Zero W via SSH over USB, as in this article https://desertbot.io/blog/ssh-into-pi-zero-over-usb and this one https://www.thepolyglotdeveloper.com/20 ... cable-...
1
vote
1answer
41 views

Error installing packages on Raspberry PI 3

When I'am trying to install packages I am getting error: The value 'jessie' is invalid for APT::Default-Release as such a release is not available in the sources cat /etc/debian_version 9.8 cat /etc/...
3
votes
2answers
38 views

Connect Camera (TTL serial) to Raspberry PI

I recently bought a barcode scanner for a hobby project. I want to connect it to my Raspberry PI 3 B+. The interface for the camera is RS232 TTL serial. It has a flex cable about half the size of the ...
2
votes
2answers
35 views

SSH Raspberry Pi from other local network

We have set up a Raspberry Pi as a honeypot using honeypi. Now it is in a different network with a firewall in between with static NAT configured. It is possible to ping the Raspberry Pi but SSH does ...
2
votes
1answer
21 views

Ways to run an OS for a watch using a Raspberry Pi/Arduino

I am thinking of making a smartwatch using a Raspberry Pi/Arduino (Zero W if I use a Raspberry Pi). Is it possible to put an OS such as Tizen on it so that I can turn it into a smartwatch? (Anything ...
0
votes
0answers
21 views

Using Raspberry pi as a wifi hotspot and sharing a SOCKS proxy through it

hi ive been trying to figure this out for a few days but i lack the technical know how to properly implement this i am attempt to do this guide on my raspberry pi running rasbian https://np.reddit.com/...
1
vote
1answer
17 views

How to avoid resizing (shrink) of SD card and connection refused error in putty for installing raspberry pi

I am new with raspberry pi, I want to start the raspberry pi 3,Model B on laptop connected with ethernet cable, but as I want to create a ssh file( with no .txt extension)for the network error:...
1
vote
1answer
24 views

Why is SPI not working on any of my Raspis?

I tried it on both Raspi 3 and 2 using the SpiDev python library. I've never even seen any kind of output on MOSI or CS lines with my oscilloscope. Controlling an SH1106 OLED display via the luma....
1
vote
0answers
20 views

How to connect/link two raspberry pies for video precessing?

i am fairly new to raspberry pi platform so this question may be too basic. I am working on a project where i need at least 2 camera modules for simultaneous video recording and processing and taking ...
1
vote
0answers
16 views

Minecraft Pi Touchscreen Mode with Python

I have Raspberry Pi 3 Model B+ with 5 inches Display with touchscreen. I am using Debian Raspberry OS. I am on the file in /home/pi/mcpi/api/python/mcpi/touchControl.py to add only up, down, left and ...
0
votes
0answers
17 views

Intermittent Wi-Fi connection from Win 10 Laptop to Raspberry Pi

This morning I was able to wirelessly Remote Desktop (learned from https://www.youtube.com/watch?v=IDqQIDL3LKg) into Raspberry Pi 3 from Win 10 Laptop Then the connectivity broke off. No problem, I ...
0
votes
0answers
27 views

Run chromium with kiosk with auto-refreshing webpage (Spotify Jukebox)

I know I can run Chromium full screen based off of this tutorial, in kiosk mode, but I'm wondering what would I need to do to set up my pi up so that instead of just running one webpage on startup, it ...
1
vote
2answers
38 views

How do I set the terminal colorS

I've seen setterm suggested, but it did nothing I've seen suggestions based on ansi esc characters , doesnt last I think the prompt resets any color changes, so I can echo a color change to print a ...
3
votes
1answer
37 views

What is the status of `bluez`, and where is the man page?

bluez is advertised as "Official Linux Bluetooth protocol stack". There's a package (several actually) that can be installed: $ apt-cache search bluez bluez - Bluetooth tools and daemons bluez-cups - ...
0
votes
0answers
39 views

How to set up the Edimax EW-7611ULB combo Bluetooth WIFI dongle

The hidden question in this post... Although, this dongle works (for awhile), there is a problem with the bluetooth driver. After streaming for about an hour, the driver eats up all the Pi memory ...
3
votes
2answers
61 views

What changed in Raspbian that prevents my old setup of an Access Point

After researching many websites I developed an Access Point for use by students in an environment that has no internet access. It turned out to be something like "Internet In A Box" but with a ...
2
votes
0answers
26 views

Issues with Sequent Microsystems 8 relay board

I'm using the Raspberry Pi 3 Model B V1.2, and the Sequent Microsystems 8 Relay Board 2.0. The manual tells you to install this software from github. I installed this and was able to control the ...
1
vote
2answers
56 views

The best way to conect to my Raspberry Pi Zero W by MAC address?

I want to know the best way to connect my RBP by wifi using the MAC Address. I currently use sudo nmap -sn 192.168.0.0/24 and obtain this Nmap scan report for 192.168.0.114 Host is up (0.025s latency)...
1
vote
1answer
18 views

MongoDB 3+ on Pi 3

I recently tried to run the binaries for mongodb from the website of mongopi without much succes... Despite setting the path as follow export PATH=/home/pi/mongo34_arm64_rPi3/bin:$PATH I am getting ...
0
votes
0answers
10 views

Google Assistant voice communication error

I'm using google assistant on raspberry pi 3 B+ for home automation. I have connected LED to GPIO pins of pi. But whenever i give it a command "OK Google turn on" it responds with "Power controls are ...
1
vote
0answers
20 views

Route localhost:XXXX to another IP locally

I have a server in Raspberry Pi, hosted in a docker container. Currently I am accessing via localhost:8005or using my IP 192.168.0.101:8005. I would like to mask the port number and access it ...
-7
votes
0answers
31 views

Gaming with Raspberry PI3

i want to make a gaming machine with raspberry pi3 and i am using raspberry pi3 as my CPU . i want it to run games like cs:go and GTA5 but i want to know would it be better to install a graphic card ...
1
vote
1answer
18 views

Can't find /boot nor etc folder in downloaded NOOBS in SD Card. Need to add wpa_supplicant.conf file to connect to wifi on first boot in headless mode

I have downloaded NOOBS on an SD Card to install in my Raspberry Pi Zero W. I will boot it for the first time in headless mode (because I do not have access to an HDMI monitor) and for that i need to ...
1
vote
0answers
21 views

Raspbian-compatible JavaScript IDE

Does anyone know of any JavaScript IDEs (or IDEs that support JS) that can be compiled or installed on Raspberry Pi? I've found a few good IDEs that are compilable/installable on the pi, but most of ...
1
vote
1answer
33 views

Garage door buttons on car to control RPi

Is it possible to capture a button press from the universal garage remote that is built into my car? id like to use this in my project to turn on porch light and unlock the door. do I need some kind ...
2
votes
1answer
21 views

Speed up initial connection to AP through wifi

I have a Raspberry Pi Zero W-based device that records data from sensors. The device is mobile so it gets out of access point's range several times per day. When the device returns to the access ...
2
votes
2answers
111 views

Serial to Arduino totally non-responsive

I'm trying to connect my Arduino to my Raspberry Pi using the GPIO pins. I understand that the Pi uses a 3.3V signal while the Arduino uses a 5V signal so I bought a bi-directional logic level ...
0
votes
0answers
12 views

Reflective IR sensor Is not as sensitive as its designed to be

I'm working on a project where I'm repurposing sensors from a Pop-a-shot machine Sensors we're using https://www.popashot.net/shop/accessories/scoring-sensors/ The sensors are a 4 pin reflective IR ...
1
vote
1answer
17 views

Can you use the PiCamera library with a camera that is isn’t the PiCamera like the picture?

!camera that I want to use(https://i.stack.imgur.com/GUJ2q.jpg) I’m having some issues getting this camera to work, getting told that I need to check the SUNNY chip that as far as I know is only on ...
3
votes
1answer
118 views

Cross compiling for RPi - error while loading shared libraries

I'm trying to compile a simple program on my Ubuntu using the ARM cross compile toolchain (arm-linux-gnueabihf-gcc) and run it on my Raspberry Pi. The program is using the wiringPi shared library (...
2
votes
1answer
31 views

Connect to Raspberry Pi from iPad via Bluetooth

I'm considering experimenting with a Raspberry Pi. I was wondering if I could connect to the Raspberry Pi from my iPad via Bluetooth and use the iPad as a screen that way. In my head it makes sense. ...
4
votes
2answers
81 views

Reading Voltage Input on ADC

I'm thinking of using the Waveshare ADC board with a RaspPi 3 to monitor the current driving a DC brushless motor. I've run through the waveshare examples, and I can handle reading inputs ...
-1
votes
0answers
45 views

Why isn’t Florence opening?

I downloaded all necessary dependencies as well as updated and upgraded my Raspberry Pi. After I installed Florence and rebooted my raspberry pi, the Florence wouldn’t open at all. Why is that? This ...
0
votes
0answers
29 views

Read real time raw data bluetooth

Currently im working on a bluetooth speaker, which has to receive audio via bluetooth from my phone. The bluetooth receiver will be the raspberry pi 3 a+, and it will direct the audio data to an ...
2
votes
0answers
27 views

USB audio device is displayed as default, but is not

I have set the USB device on my Raspberry Pi to default. The file /lib/modprobe.d/aliases.conf: options snd-pcsp index=-2 options snd-usb-audio index=0 options cx88_alsa index=-2 options snd-atiixp-...

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