Raspberry Pi

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The Raspberry Pi Foundation works to put the power of digital making into the hands of people all over the world, so they are capable of understanding and shaping our increasingly digital world, able to solve the problems that matter to them, and equipped for the jobs of the future.

We provide low-cost, high-performance computers that people use to learn, solve problems and have fun. We provide outreach and education to help more people access computing and digital making. We develop free resources to help people learn about computing and how to make things with computers, and train educators who can guide other people to learn.

FreeRadius Accounting

I have FreeRadius installed on a Raspberry Pi and would like to know how to enable Accounting.

Thanks

3 Comments

I have FreeRadius installed on a Raspberry Pi and everything seems to be working fine.

I would like to implement a limit on the number of logins per identity and was hoping someone could share with me how to achieve this.

My only goal is to provide some control of people sharing access credentials among those that shouldn't have them.

Thanks.

1 Comment

I have an analog door opener system in my building, this is the phone which opens the door: http://pasteboard.co/4JgctXi4x.jpg
I have a raspberri pi 3 model b, and a Pcf8591 ADC/DAC converter: http://articulo.mercadolibre.com.ar/MLA-641278286-modulo-pcf8591-conversor-4-ad-da-i2c-arduino-raspberry-_JM

What I want to do, is to connect the wires that goes to the analog door opener phone system into Raspberri PI, so I can hear/speak from a sip softphone installed in the raspberry pi.

Is this possible? I measured the voltage in the mic phone/speaker, it's shown in the picture. Not sure how to proceed with this.

Anyone? Thank you!!

4 Comments

hi everyone,
i'm trying to start a project for a box storage facility, i know thing allready have been done but i would like to do mine :)

the code is not the problem but the electronics yes. The problem is not U = Ri :) but how can i mux the doors sensors ? If some one open the door very fast and then close what would happen ... is important not to miss the change of state ...

So any idea is really welcome

Thanks very much

1 Comment

Hello,

I have been trying to set up I2C communication between my Raspberry Pi and two arduino pro minis using this tutorial:
https://learn.adafruit.com/adafruits-raspberry-pi-lesson-4-gpio-setup/configuring-i2c

I have done all the steps correctly, installed all the required dependencies and modified all the required files, yet "sudo i2cdetect -y 1" does not detect the arduinos. I have two PCF8591 AD/DA converter modules, and when I connect them to the RPi using the SCL and SDA ports, they are detected and shown by "sudo i2cdetect -y 1". But the arduinos do not show up. This is How I have connected the RPi and the Arduino Minis:
RPi -> Arduino
3.3V -> Vin
GND -> GND
SDA(GPIO2) -> SDA(A4)
SCL(GPIO3) -> SCL(A5)

I would like to know what is going wrong here. Please suggest.

2 Comments

LVL 53

Post by

Scott Fell, EE MVE

2017-04-26

https://www.pine64.org/?page_id=3707

Have you worked with a Pinbook for surfing or other?

PINEBOOK – PINE64

5 Comments

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LVL 9

Expert Comment

by:Brandon Lyon2017-04-26

I thought about getting one back when they announced it. I decided to wait for reviews mainly because I was unsure how good (or bad) the screen and keyboard might be. That and other options are getting ridiculously cheap.

LVL 46

Expert Comment

by:Jackie Man2017-05-04

According to its spec, PINEBOOK is similar to a Raspberry Pi 3 and it may be the reason why it can be made so cheaply.

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Hi experts.

I have been trying to automate some infrared command through my Raspberry Pi, using the IRDroid-Rpi infrared transceiver (http://www.irdroid.com/2016/10/discover-how-to-turn-raspberry-pi-into-a-infrared-remote-control-using-the-irdroid-rpi/). These commands must be first learned from my Set Top Box infrared remote control using irrecord, but it is a commercial remote.

I have followed the documentation and finally got the IRDroid-Rpi to work. However, it will only work if I learn commands from commercial remote controls like a Samsung TV remote control. My STB remote control is non commercial, and I have not been able to make the IRDroid-Rpi learn and send the commands correctly. Here is my procedure and files:

pi@raspberrypi:~ $ sudo irrecord -f -d /dev/lirc0 lircdtp2.conf

Press RETURN now to start recording.
................................................................................
Found const length: 108301
Please keep on pressing buttons like described above.
Creating config file in raw mode.
Now enter the names for the buttons.

Please enter the name for the next button (press <ENTER> to finish recording)
KEY_CHANNELUP

Now hold down button "KEY_CHANNELUP".
Sorry, something went wrong.
Try again.
Got it.
Signal length is 3


# Please make this file available to others
# by sending it to <lirc@bartelmus.de>
#
# this config file was automatically generated
# using lirc-0.9.0-pre1(default) on Tue Apr 25 23:40:23 2017
#
# contributed by 
#
#

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…

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Hi EE,

I have attached multiple sensors with my Raspberry Pi. I want to power off couple of those sensors from my mobile. I can now only start / stop sensor data reading from my application, but it do not power off / on those sensors. However I can reboot my Pi which power off all of the attached sensors.

My question is, "is there any way to power on/off selected sensors which are attached with my Pi"?

Regards,
Roy

8 Comments

Dear experts,

I am a novice in raspberry pi. I want to make a door lock which should be unlocked only when it detects presence of myself within a range not for others.

Is it possible? What type of sensors need to be used for that? Any tutorial or advice?

With regards,
Roy

13 Comments

LVL 6

Post by

Brian Matis

2017-04-18

If anyone has a Raspberry Pi and no idea what to do with it, here's an idea:
https://arstechnica.com/gadgets/2017/04/mini-lego-macintosh-classic-e-ink-display/

I built a mini LEGO Macintosh Classic with e‑ink displayDocker, Raspberry Pi, an e-ink display: All the hallmarks of an awesome DIY project.

2 Comments

Expert Comment

by:Daniella Barion2017-04-18

Outstanding how people can be creative especially when they bring past memories.

LVL 6

Author Comment

by:Brian Matis2017-04-18

"Everything old is new again!" ;-)

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I am designing my first Raspberry Pi app .... It tracks a volley ball game ... I have found a lot of motion tracking ... I need a tutorial teaches me how to map the court ... the court has white lines ... when the ball goes beyond the white line an LED will light up ... how can I get raspberry to map the court ?

2 Comments

Post by

Matt McLelland

2017-03-16

3D Printing Technology + Raspberry Pie + Arduino + Garden + San Luis Obispo = Farmbot.io

https://farmbot.io/

FarmBot | Open-Source CNC Farming

Raspberry Pi

8 Comments

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LVL 1

Expert Comment

by:Juana Villa2017-03-17

@JamesBilous I understand your point. However, I don't find very reliable FarmBot's information about sustainability because they state "we will never truly know". Anyway, I believe they should do a study where they compare the CO2 produced for production, transportation, and use of FarmBot vs a traditional household farming.

LVL 1

Expert Comment

by:Juana Villa2017-03-17

@ScottFell, EarhBox looks interesting. I am thinking about having my own garden and I was looking into vertical garden. I will definitely take a look at EarthBox, it might a good option for me.

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It looks like Java 8 with Swing runs fine on the Raspberry Pi, even the least powerful version of the RPi:
Raspberry Pi Zero.

As I found out jfxswt.jar required to run JavaFX is not included in the JDK normally any more.

How would I find the folder to place it so that JavaFX can be run on the RPi?

( I got it downloaded as part of Gluon)

If this file is included can I also compile JavaFX on the RPi or just run it?
(Does it need to be compiled on a separate desktop computer?)

24 Comments

I got the default Raspbian OS on a RaspBerry Pi Zero with Oracle Java 1.8.0_65 installed, along with BlueJ IDE, which is also installed by default in the Raspbian OS.

JavaFX is supposed to be run on a Raspberry Pi, provided it is not a newer version than Oracle Java 1.8.0_65 which was the last version Oracle came out for the ARM processors in the Raspberry Pi, before
they 'axed' ARM support in Java.

In BlueJ there is no choice in what kind of project you would want to run. (Java, JavaFX, etc.) I can only see hardware-specific Raspberry Pi libraries installed if I look at the 'User Libraries' tab of the created project.

If I try to run a simple JavaFX app just to test, it crashes on the first import, which refers to the package:
javafx.application the basic package that lets you run JavaFX apps.

See screen shots of my problem described above:

javafx.application does not exist: correct version of Java installed

User Libraries Installed in the Project Preferences

What's happening here? How can I compile and run JavaFX applications on a Raspberry Pi?

27 Comments

LVL 9

Post by

Brandon Lyon

2017-03-13Edited

I just found out that Raspberry Pi foundation puts out a magazine. You can subscribe to paper copies, subscribe via app, or download issues for free from the website.

If you subscribe to the paper version for a year then you get a free Pi Zero W, but that's expensive for customers outside of the UK.

The MagPi Magazine - The official Raspberry Pi magazineThe official Raspberry Pi magazine

Raspberry Pi

2 Comments

LVL 6

Expert Comment

by:Brian Matis2017-03-13

Nice! Looks like one of the cool things there is the various project ideas. Like this one: Fallout 4 Terminal. You should totally make that one! ;-)

LVL 9

Expert Comment

by:James Bilous2017-03-14

@Brian "Step 1: 3d print a fallout 4 terminal"

damn.

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LVL 9

Post by

Brandon Lyon

2017-02-28

I bought a Pi Zero W to try out a $10 computer with internet access. I hope it arrives soon :)

The $10 Raspberry Pi Zero W includes Wi-Fi and BluetoothThe Raspberry Pi Zero is a serious, not-even-kidding $5 computer you can buy right now and put into all sort of projects, but to get it connected to the internet or wireless peripherals you'll end...

8 Comments

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LVL 17

Expert Comment

by:Lucas Bishop2017-03-01

This is odd, I don't recall putting my link at the beginning of my comment...

LVL 6

Administrative Comment

by:Brian Matis2017-03-02

@Lucas - Thanks for mentioning that! We've definitely got a display bug there... When you look at your comment on the post's standalone page, it should be correct, but the feed view is currently displaying it in the wrong spot. We'll get a fix out in the near future for that.

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Exception thrown: 'Microsoft.Azure.Devices.Client.Exceptions.IotHubCommunicationException' in mscorlib.ni.dll
Exception when sending message:An error occurred while sending the request.

Getting an exception error while sending telemetry data to azure iot hub using Dht11 sensor with raspberry pi 3 and windows 10 iot core.

4 Comments

I have seen lots of people use a small LED strip plugged in the USB and controlled by a script, and I have seen a lot of people have a big LED Strip plugged into the wall and controlled via a Remoted provided by the manufacture.

I am looking for a way to have the long/big LED strip plugged into the wall and controlled via script, either via USB/PowerShell etc. or Raspberry Pie. I need to know what kind of stuff I need to pull this off and if possible what kind of LEDs to buy. I presume I will need a bread board and some solder wires etc.… but given that I’m using power from the wall what additional equipment will I need so I can use the power from the wall and the controls from the PI to get what I need?

1 Comment

Hello,

I have created a bash script on my Raspberry Pi that clicks pictures, mails them to an email address and uploads them to an FTP. It does a few other things like communicate with an external server and look for certain checks and commands.
Now, all these actions require 2 to 3 minutes time to execute and what I require, is a way to rerun the script again and again as soon as all the actions in the current execution are completed.
But as for now, I have to login to the pi and run the command every time to make it work. I want something like this:
_____________________________________________________
#!/bin/bash
#example.sh

//some jobs

sudo sh example.sh
_____________________________________________________
Now my questions are:
1) How to make the script run as soon as the pi is powered on, without requiring the user to login?
2) Is it safe to execute a script like this from within itself? Or are there better ways to do it?
3) In case of such infinite loops, there may be a crunch of resources and memory. How to clean up the memory or put an auto-restart feature?

Help is much welcome.

Thanks in advance.

7 Comments

Hello Everyone,

I am working to set up a raspberry pi as a vpn through my pfsense router. I have the pi configured and I am now having issues getting it to pass through the firewall to a public ip. If that won't work I'm looking for a username/password based vpn akin to pptp to add simplicity for my users (they don't want to use another client like open vpn) I'm fairly new to configuring vpns and I'm looking for a little guidance.

1 Comment

Is there a script available to backup a raspberry pi device over the network to a Windows share ? I know there is an a local SD backup method but these systems are 100 of miles away from my office

I need to start patching but if something goes wrong I need to know I can get the full working system back.

thanks

5 Comments

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