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by simspace
Tue Nov 13, 2018 12:27 am
Forum: Graphics, sound and multimedia
Topic: Need help/direction with recording video and audio using my RasPi
Replies: 0
Views: 591

Need help/direction with recording video and audio using my RasPi

As an experiment / learning project, I want to create an action cam using my RasPi Zero W, the latest version of the RasPi camera module and an i2S microphone. I have found some RasPi action cam examples online. There's seems to be several good tutorials on how to the RasPi camera module. And some t...
by simspace
Sat Aug 18, 2018 1:44 pm
Forum: Graphics, sound and multimedia
Topic: Use GPIO to sync multiple video players. Possible?
Replies: 1
Views: 221

Use GPIO to sync multiple video players. Possible?

Is it possible to use GPIO to sync multiple RasPi video players? As shown in the picture below, I need to sync 16 RasPi video players. The master RasPi will trigger the other 15 video players (start, stop, next) and it will be the master clock for syncing the other 15 video players. I thought about ...
by simspace
Sun Jul 29, 2018 11:12 pm
Forum: C/C++
Topic: Need help resolving cross compiler error ...
Replies: 1
Views: 271

Need help resolving cross compiler error ...

I am trying to work through this cross compile tutorial . I am having one build issue and I can’t find a solution to my problem. I downloaded the RasPi toolchain , using the link provided in the tutorial, to my laptop running Ubuntu 16.04. When I try to confirm the (arm-rpi-4.9.3-linux-gnueabihf) co...
by simspace
Sun Jul 29, 2018 2:17 pm
Forum: C/C++
Topic: Raspberry Pi Tools for Cross Compiling ... What are the differences?
Replies: 0
Views: 302

Raspberry Pi Tools for Cross Compiling ... What are the differences?

I'm new to RasPi development and cross compiling. The Raspberry Pi Tools have several directories or paths such as ... tools/arm-bcm2708/arm-bcm2708hardfp-linux-gnueabi/ tools/arm-bcm2708/arm-rpi-4.9.3-linux-gnueabihf/ tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/ (For all the path opti...
by simspace
Sat Jul 21, 2018 9:11 pm
Forum: Networking and servers
Topic: How can I broadcast OSC messages to multiple RasPi's on my network?
Replies: 2
Views: 360

How can I broadcast OSC messages to multiple RasPi's on my network?

I am trying to figure out how to broadcast OSC messages to multiple RasPi's on my network. I have 14 RasPi's, each running a video player that can be controlled with OSC. Each RasPi and connected to it's own monitor. And each RasPi has a "media" directory containing multiple videos. This directory i...
by simspace
Thu Jul 19, 2018 3:27 pm
Forum: Troubleshooting
Topic: RasPi Zero W and Random Screen Flashes ...
Replies: 2
Views: 178

Re: RasPi Zero W and Random Screen Flashes ...

Problem Solved! In a moment of desperation and frustration, I decided to try yet another Dell 1708FP monitor. I'm glad I did! For some unknown reason, this particular monitor displayed a helpful message that basically said (I am paraphrasing) " Can't use current video mode. Please use 1280 x 1024 a...
by simspace
Wed Jul 18, 2018 6:27 pm
Forum: Troubleshooting
Topic: RasPi Zero W and Random Screen Flashes ...
Replies: 2
Views: 178

RasPi Zero W and Random Screen Flashes ...

MY PROBLEM : My RasPi Zero W is causing random screen flashes. SOME BACKGROUND : I have three RasPi Zero W's running Jessie Lite, that I use for displaying and syncing SD video on multiple Dell UltraSharp 1708FP (17-inch) monitors. The monitor connection is via an HDMI-to-DVI adapter. The monitor r...
by simspace
Mon Jul 16, 2018 1:06 pm
Forum: General programming discussion
Topic: Question About Compiling RasPi Apps
Replies: 9
Views: 1001

Re: Question About Compiling RasPi Apps

I found this cross-compile discussion on Stack Overflow. The second thread in the discussion ("Let's cross compile a Pie!") worked perfectly for me the first time. Now I need to take some time and review the differences between the tutorials so I better understand why my first two attempts failed. I...
by simspace
Sun Jul 15, 2018 11:22 pm
Forum: General programming discussion
Topic: Question About Compiling RasPi Apps
Replies: 9
Views: 1001

Re: Question About Compiling RasPi Apps

https://medium.com/@au42/the-useful-raspberrypi-cross-compile-guide-ea56054de187 https://hackaday.com/2016/02/03/code-craft-cross-compiling-for-the-raspberry-pi/ @DirkS, I've been going through the two cross-compile tutorials. You suggested. The hackaday.com tutorial seemed easy, but when I transfe...
by simspace
Sat Jul 14, 2018 7:22 pm
Forum: General programming discussion
Topic: Question About Compiling RasPi Apps
Replies: 9
Views: 1001

Re: Question About Compiling RasPi Apps

Thanks for the replies! I need to first try and make it work with the RasPi Zero. My project (if I can make it work) requires 20 RasPi’s, so I need to go as cheap as possible. That’s helpful info regarding building apps that use openFrameworks. A couple of apps I am trying to build also use Pip as p...
by simspace
Fri Jul 13, 2018 7:30 pm
Forum: General programming discussion
Topic: Question About Compiling RasPi Apps
Replies: 9
Views: 1001

Re: Question About Compiling RasPi Apps

DirkS wrote:
Fri Jul 13, 2018 7:27 pm
Sure. Search the web for cross compiling
Excellent. Thank you @DirkS
by simspace
Fri Jul 13, 2018 7:08 pm
Forum: General programming discussion
Topic: Question About Compiling RasPi Apps
Replies: 9
Views: 1001

Question About Compiling RasPi Apps

Hi, I am a developer, but I am noob to the RasPi world. Building apps on my RasPi Zero W is so painfully slow. For example, I am building the openFrameworks polygonExample app. It's been building for over two hours now and it's not done yet. Is it possible to build apps on a laptop running Debian, t...
by simspace
Thu Jul 12, 2018 5:15 am
Forum: Beginners
Topic: Pip or Pip3 on RasPi Zero W is painfully slow
Replies: 3
Views: 389

Re: Pip or Pip3 on RasPi Zero W is painfully slow

W. H. Heydt wrote:
Thu Jul 12, 2018 3:02 am
There could be any of a number of causes, some fixable, some not. Here are a few that occur to me are:
Good stuff. I will look into all your suggestions.
Thanks for the reply!
by simspace
Wed Jul 11, 2018 10:42 pm
Forum: Beginners
Topic: Pip or Pip3 on RasPi Zero W is painfully slow
Replies: 3
Views: 389

Pip or Pip3 on RasPi Zero W is painfully slow

Hi, I am trying to use PIP to install some packages on my RasPi Zero W, but it is painfully slow ... like hours. In fact, when I run pip --version or pip list , even those simple commands take 20 to 30 seconds to run before I see output. Any ideas why this is happening, or how I can resolve the prob...

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