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by Paulon8080
Wed Jun 19, 2019 1:47 pm
Forum: Beginners
Topic: Back up - duplicate sd card.
Replies: 2
Views: 107

Re: Back up - duplicate sd card.

Thanks !
by Paulon8080
Wed Jun 19, 2019 12:29 pm
Forum: Beginners
Topic: Back up - duplicate sd card.
Replies: 2
Views: 107

Back up - duplicate sd card.

Hey everybody, This may be a very silly question! I have a specific project working on a pi. The project is running on raspbian, however to get it all up and running I had to install many dependencies, packages etc. My question is can I copy the entire contents of the SD card (so raspbian, all other...
by Paulon8080
Fri Jun 07, 2019 2:50 pm
Forum: Graphics, sound and multimedia
Topic: Select and display random images with ImageMagick
Replies: 3
Views: 220

Re: Select and display random images with ImageMagick

The above formula in your second script won't work. xargs works differently. However, even when the flow is corrected I'm not seeing a way for xargs (or parallel) to pass all the pictures' file names ahead of the output file name. So I would try it with command substitution instead: #!/bin/sh monta...
by Paulon8080
Fri Jun 07, 2019 11:46 am
Forum: Graphics, sound and multimedia
Topic: Select and display random images with ImageMagick
Replies: 3
Views: 220

Re: Select and display random images with ImageMagick

Giving the op a respectful bump!
by Paulon8080
Thu Jun 06, 2019 11:00 am
Forum: Graphics, sound and multimedia
Topic: Select and display random images with ImageMagick
Replies: 3
Views: 220

Select and display random images with ImageMagick

Hi everybody, I have a large batch of jpegs. I would like to be able to select X amount of jpegs from the folder and display them. I have been able to write a script that will let me display all of them. #!/bin/bash for f in *.jpg do montage *.jpg | display montage.jpg done This will display all ima...
by Paulon8080
Thu May 30, 2019 8:28 am
Forum: Graphics, sound and multimedia
Topic: An image wall
Replies: 4
Views: 386

Re: An image wall

The Pi can output directly to a HDMI projector. The issue you will have is the aspect ratio - most projectors are wider than tall so you will have to pad the image sides out with black or white so the square of 10x10 remains square. There is a command line tool called Image Magic https://imagemagic...
by Paulon8080
Thu May 30, 2019 8:27 am
Forum: Graphics, sound and multimedia
Topic: An image wall
Replies: 4
Views: 386

Re: An image wall

I'm not sure if you are asking about a solution with 100 projector or just one projector. But lets assume you are not made of money so that you want to project 1 image of resolution 1920x1080 containing 100 smaller images of 192x108 resolution. This is not difficult if you pregenerate one static HD...
by Paulon8080
Wed May 29, 2019 5:31 pm
Forum: Graphics, sound and multimedia
Topic: An image wall
Replies: 4
Views: 386

An image wall

Hi everybody, For a project i am thinking of developing I would like to do the following: 1. Project jpg images from a Pi3 onto a (flat wall) using one projector. 2. I would like to project 100 images simultaneously (if this is possible) 3. I would like the projection to be in a 10 X 10 grid...so 10...
by Paulon8080
Fri Dec 14, 2018 2:50 pm
Forum: Networking and servers
Topic: Pi as offline Wireless Access Point
Replies: 3
Views: 983

Re: Pi as offline Wireless Access Point

Thanks Andyroo,

I've actually just been checking out Pirate Box (https://piratebox.cc/) which LibraryBox comes from....I've set up piratebox on my pi3 and am now going to 'play' around with it to see if I can some kind of variation and hopefully learn a bit a long the way!
by Paulon8080
Tue Dec 11, 2018 2:31 pm
Forum: Networking and servers
Topic: Pi as offline Wireless Access Point
Replies: 3
Views: 983

Pi as offline Wireless Access Point

Hi everybody, I have an idea for a project (posted something similar, but different, here last week). I would like to host various media files on my pi (video, text etc) and then set Pi up as wireless access point. When somebody logs onto the WAP from their devices they are able to automatically acc...
by Paulon8080
Thu Dec 06, 2018 11:59 am
Forum: Networking and servers
Topic: PI as WAP
Replies: 7
Views: 627

Re: PI as WAP

Thanks Dirk!

I will give it a go!
by Paulon8080
Wed Dec 05, 2018 10:04 pm
Forum: Networking and servers
Topic: PI as WAP
Replies: 7
Views: 627

Re: PI as WAP

Hey Dirks, Thanks for your question. So as you suggested I looked for captive portal Pi and found this https://pimylifeup.com/raspberry-pi-captive-portal/ What that seems to do is, when you connect to the wifi thtat page will appear as a gateway as in you need to click it to visit sites on the web (...
by Paulon8080
Wed Dec 05, 2018 7:57 pm
Forum: Networking and servers
Topic: PI as WAP
Replies: 7
Views: 627

Re: PI as WAP

Actually that isn't what I'm looking for (apologies for lack of clarity!)

I would like to open up the template html file on lighttPd immediately upon accessing the PIWAP.

My logic being someone can browse a 'local' website from their device.

Hope that makes sense!
by Paulon8080
Wed Dec 05, 2018 7:28 pm
Forum: Networking and servers
Topic: PI as WAP
Replies: 7
Views: 627

Re: PI as WAP

Thanks DirkS,

Will give it a go!
by Paulon8080
Wed Dec 05, 2018 5:30 pm
Forum: Networking and servers
Topic: PI as WAP
Replies: 7
Views: 627

PI as WAP

Hey everybody, I'm 'playing' around with a basic idea for a project (not sure where project will go tbh) But for now what I would like to achieve is 1. Pi as Wireless Access point 2. When people connect to this WAP (with password) a browser page will automatically open (a welcome of some sorts). So ...
by Paulon8080
Mon Jan 22, 2018 10:02 pm
Forum: Other programming languages
Topic: .wav duration with node.js
Replies: 0
Views: 777

.wav duration with node.js

Hi all, I am working on a project using node.js and .wav files with my Pi3. I have a selection of audio .wav files (all of different lengths). I want 'X' amount of them to be selected and played one after another. I know I can use Set Interval to time them to play a certain amount of time after each...
by Paulon8080
Thu Nov 23, 2017 3:04 pm
Forum: Teaching and learning resources
Topic: Pi for Physical Computing Module
Replies: 0
Views: 1273

Pi for Physical Computing Module

Hi everybody, I'm a lecturer in a University, teaching on a Multimedia module. Next semester we will be introducing Raspberry Pi's into a second year Physical Computing module ( We had used arduinos before). I just wanted to ask if anyone has any recommendations/links/suggestions to syllabi etc that...
by Paulon8080
Sun Nov 12, 2017 10:20 pm
Forum: General programming discussion
Topic: Calling a JS variable in a shell script?
Replies: 3
Views: 1733

Re: Calling a JS variable in a shell script?

Hey Heater, Thanks for your reply and apologies for lack of clarity, I’m somewhat fumbling in the dark here (you’ve probably noticed). Yes I am using node.js. I have a javascript file that I am using to monitor the tweets of a particular account using this https://www.npmjs.com/package/twit. var pri...
by Paulon8080
Sun Nov 12, 2017 6:07 pm
Forum: General programming discussion
Topic: Calling a JS variable in a shell script?
Replies: 3
Views: 1733

Calling a JS variable in a shell script?

Hi everybody, I am working on a PI project at the moment which involves using a variable from a javascript file in a separate shell script. I have a String in my Javascript file: e.g.. var text = “This is a text”; I would like to call that specific variable from that javascript file in test.sh so th...
by Paulon8080
Wed Sep 20, 2017 10:53 am
Forum: Beginners
Topic: Pi with GSM and SDR?
Replies: 5
Views: 946

Re: Pi with GSM and SDR?

Hey Drgeoff,

Thanks for the reply. Apologies for posting in wrong section, I guess I have moved on from 'beginners' section.

If mods want to move it elsewhere, that's fine with me.

Apologies again,

Paul
by Paulon8080
Tue Sep 19, 2017 1:02 pm
Forum: Beginners
Topic: Pi with GSM and SDR?
Replies: 5
Views: 946

Re: Pi with GSM and SDR?

Hey ghans and drgeoff, Thanks for your replies, this is a great help. First up 'But you need to be aware that in almost all countries, using an unlicensed transmitter on the mobile phone bands is against the law.' Obviously I don't want to do any thing on the wrong side of the law, so I'll have to i...
by Paulon8080
Sat Sep 16, 2017 1:45 pm
Forum: Beginners
Topic: Pi with GSM and SDR?
Replies: 5
Views: 946

Pi with GSM and SDR?

Hi everybody, I recently saw an art installation in which each person within the gallery space received an automated text message to their phones from their phones , without actually supplying their cell/mobile phones numbers. I would be interested in trying something similar but am not too sure whe...
by Paulon8080
Thu Jul 06, 2017 12:47 pm
Forum: General discussion
Topic: 'Antique' Televisions with a Pi.
Replies: 16
Views: 2954

Re: 'Antique' Televisions with a Pi.

Hi everybody,

Thanks for your individual replies...I've put this project on temporary hold for the moment. But I will be returning to it in a while and will reignite this thread with more questions/comments etc

Thanks,

Paul
by Paulon8080
Thu Jun 22, 2017 11:06 am
Forum: General discussion
Topic: 'Antique' Televisions with a Pi.
Replies: 16
Views: 2954

Re: 'Antique' Televisions with a Pi.

Yes, the PI can output either PAL or NTSC, and you can use a TV modulator, such as the ones used with/in older home-computers to create an RF signal. Hey Mahjongg, Thanks so much for your reply. By TV modulator do you mean something like this: http://www.storkz.com/rca-crf907r.html?currency=EUR&cou...
by Paulon8080
Thu Jun 22, 2017 11:05 am
Forum: General discussion
Topic: 'Antique' Televisions with a Pi.
Replies: 16
Views: 2954

Re: 'Antique' Televisions with a Pi.

Also watch out for 'live chassis'. Those things were never designed to have anything but an aerial plugged into them and can cause all sorts of problems if other electronics is connected to them. Including life ending problems. Hey Hippy, Thanks for the reply. I'll be sure to post here with the TV ...

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