Go to advanced search

by jolouis
Mon Nov 21, 2016 8:21 pm
Forum: Graphics, sound and multimedia
Topic: Photo Booth Project - the camera
Replies: 7
Views: 2095

Re: Photo Booth Project - the camera

As mentioned by others forget the flash, the best approach is decent ambient lighting. I built one as a project for our wedding and ended up renting it out to others for a year or two after, so if you do it well it is definitely viable. In my setup I started with a light box at the top of the booth ...
by jolouis
Fri Apr 17, 2015 4:22 pm
Forum: Networking and servers
Topic: Live audio over wifi between Ableton Live and a Raspberr Pi
Replies: 16
Views: 9938

Re: Live audio over wifi between Ableton Live and a Raspberr

Since your goal is low latency you need to consider what causes that. Any type of compression adds latency. Obviously a faster/higher power machine doing the sending will help, but basically uncompressed audio will always be faster than any form of compressed. The flip side to that is uncompressed a...
by jolouis
Mon Apr 06, 2015 8:21 pm
Forum: Media centres
Topic: Antenna DTV On Kodi?
Replies: 7
Views: 2727

Re: Antenna DTV On Kodi?

Something like a HDHomeRunner is what you're after. Essentially a DTV tuner with an MPEG-4 encoder built in. There are some other ones too but I believe the HomeRunner is one of the more popular/common. I haven't tried but I would guess that the Kodi LiveTV plugin supports it, but you'd have to chec...
by jolouis
Tue Mar 31, 2015 1:37 pm
Forum: Networking and servers
Topic: Controlling USB ports over web
Replies: 25
Views: 4999

Re: Controlling USB ports over web

Most likely a simple permission issue. What user do you login as to run your script manually? What user is the web server running as? It's a fairly common problem for people not intimately familiar with linux permissions. Google around, but a few options are: 1) setup a Sudoer to allow anyone to run...
by jolouis
Fri Mar 20, 2015 8:42 pm
Forum: Camera board
Topic: Image capturing duration
Replies: 6
Views: 1420

Re: Image capturing duration

Yup, there's very little difference in performance between shelling out for raspistill and using picamera if all you're concerned about is capturing an image. With the former you've got a nice fast C program, but you've got the overhead of spawning a new process. Just to add to Dave's comment if yo...
by jolouis
Wed Feb 11, 2015 4:01 pm
Forum: Networking and servers
Topic: How to setup RPI to bridge ethernet & Wifi
Replies: 9
Views: 9352

Re: How to setup RPI to bridge ethernet & Wifi

Hmm interesting, as I said I've never tried to do it that way before but they key point from the debian page was: most Access Points (APs) will reject frames that have a source address that didn’t authenticate with the AP. Since Linux does ethernet bridging transparently (doesn’t modify outgoing or ...
by jolouis
Tue Feb 10, 2015 7:10 pm
Forum: Graphics, sound and multimedia
Topic: Sharing an audio input between multiple applications
Replies: 2
Views: 1270

Re: Sharing an audio input between multiple applications

You could install pulseaudio. That would let you share the input amongst multiple applications at the same time.
by jolouis
Mon Feb 09, 2015 8:21 pm
Forum: Camera board
Topic: fps of preview
Replies: 5
Views: 727

Re: fps of preview

Not sure about the FPS on the preview, but my guess would be if you looked at the code from RaspiVid.c and RaspiPreview.c in the userland tools you might be able to steal the FPS control parameters from one and try to apply it to the other. That's just a guess though, never tried it myself. On the o...
by jolouis
Mon Feb 09, 2015 3:38 pm
Forum: Networking and servers
Topic: How to make Raspberry Pi to act as an Ethernet switch?
Replies: 15
Views: 19450

Re: How to make Raspberry Pi to act as an Ethernet switch?

The bridge automatically goes away thanks to a script that pre-ships with Debian. Take a look at /etc/network/if-post-down.d/bridge My understanding of the logic there is that the script is supposed to run in response to an actual bridge being brought up or down. What I found though was that it ran ...
by jolouis
Mon Feb 09, 2015 3:20 pm
Forum: Networking and servers
Topic: How to setup RPI to bridge ethernet & Wifi
Replies: 9
Views: 9352

Re: How to setup RPI to bridge ethernet & Wifi

The configuration is the same in regards to the bridging... the only difference is what you use to setup your Wifi device. Once the wifi is up (your Wlan0 interface has an IP address and is live on the network), the bridge configuration will work (you basically create a bridge, add wlan0 and eth0 to...
by jolouis
Wed Feb 04, 2015 9:51 pm
Forum: Camera board
Topic: Convert video h264 to mp4
Replies: 37
Views: 20745

Re: Convert video h264 to mp4

I'm very interested in this as I've been trying to tackle a similiar problem: getting recorded audio to sync with video from the camera module. I think your answers here might fill in the gaps that were found and worked around previously by others: http://www.raspberrypi.org/forums/viewtopic.php?f=4...
by jolouis
Wed Feb 04, 2015 8:01 pm
Forum: Networking and servers
Topic: Connect two pi's together over ethernet
Replies: 9
Views: 16367

Re: Connect two pi's together over ethernet

Should be very easy to do: 1) Set a static IP on Pi #1 2) Set a static IP on Pi #2 3) Connect them with an ethernet cable. You might need a cross-over cable as I'm not sure if the Pi's port is auto-sensing for cross-over or not. Of course if you want to manage/program/test in the meantime you'll wan...
by jolouis
Wed Feb 04, 2015 7:58 pm
Forum: Networking and servers
Topic: Hybrid Mesh Networking With Ethernet and Wireless Nodes
Replies: 1
Views: 2062

Re: Hybrid Mesh Networking With Ethernet and Wireless Nodes

Try running a traceroute from one ethernet host to the destination of the other and seeing how far it gets. In theory as long as there aren't firewall rules blocking you should be able to get from one side of your setup to the other. On a side note, for what you are trying to achieve I would point o...
by jolouis
Thu Sep 11, 2014 12:57 pm
Forum: Camera board
Topic: Horizontally flip preview only
Replies: 3
Views: 1032

Re: Horizontally flip preview only

Unfortunately I'm using the LCD for a regular user interface as well, so it doesn't make sense to flip the entire display output permanently... Have you looked at RaspiCamControl.c? In function "raspicamcontrol_set_flips" the flips are set for each output port of the camera. you could copy or modify...
by jolouis
Wed Sep 10, 2014 9:04 pm
Forum: Camera board
Topic: Horizontally flip preview only
Replies: 3
Views: 1032

Horizontally flip preview only

I've found lots of information about how to use raspistill and raspivid... heck I've even gone as far as downloading the source code and recompiling my own version to provide some additional features for a specific application. In my project I have the camera board facing forward mounted just below ...

Go to advanced search