Hi, I have been working on a setup for my Friend/roommate streamer. Serah. (that goes to her Twitch.tv page)
This post is going to touch base on automation, and ease of control using COTS and some scripting. The goal of this project was to make it where she could click one thing and start the lighting look. Adjust it while it is live. Then turn it off, via another click.
The system uses DMX control. Switched outlets (via a few network PDUs).
The lighting console software is LightFactory. It sending sACN to Open Lighting Architecture running on a Linux VM. which then sends it to Art-Net, to output two worlds of DMX. This setup allows me to control the system with out the console if need be, Via OLA.
Scripting. I am using Expect to control the PDUs to turn on and off the outlets for different lights. Also I am using it, to send the commands to the lighting console over telnet. I use bash to script turning on and off everything.
I am using a protected web page to allow her to click a “on” or “off” link. that calls via a system exec in php to run the bash script. I do not need to reinvent the scripts when I can just call it.
When the show is running. it can be controlled by Lightfactoy’s mobile interface control.
I created a simple setup for it via the mobile interface builder. seen below.
With that, She is able to control some of the attributes of the show.
A view showing the DC to AC converter, with the test setup. (Bottom to Top of image) Fluke Scopemeter 115, Fluke 87 V, PEAK POWER 800W DC to AC supply. Plugged in to it is a “Extech AC Line Spitter”
I was looking in to my old 800W 120VAC DC to AC supply, to see just how bad the square wave is.
The test in my view was not complete. I did not load test the supply. To see how the wave forms was effected. Due to missing Nut assembly for the Positive lead. I felt it would be unsafe due to insecure connection that could heat up due to possible arcing issues.
With the unit unloaded I proceeded to do a preliminary look at it with the 87 V, a digital meter. The 87, read that it was 120.2VAC and 61.12Hz.
Fluke 87 V, showing 120.2 on the display
Fluke 87 V, showing 61.12Hz
With that I was curious what was going on with the waveform.
I hooked up the Scopemeter in to the mix. AC Neutral to Ground reference for the probe. The probe hooked in to the AC Hot on the line Splitter.
with that, I set the A input channel to 10:1 and took a look.
in mixed scope and meter view on the scopemeter
with that we see that it is going from +120V to 0 then -120V in reference to Neutral.