DMX-512 Wireless (or DMXW) is the prototype remote control on-stage special effect electronics that we're now evolving into our polished Spark-fx ecosystem.
Below are various examples of hacked electronic stage effects developed by the STEAM-fx Collective, many of which have been under production booth control.
A STEAM-fx member typically teams up with a local venue's production team, mainly collaborating with the director and/or choreographer (to understand and negotiate the production's vision), set designer and construction lead (to integrate an electronic effect into the production as seamlessly and unobtrusively as possible, with a mind toward each department's desire to reuse materials), and with the lighting designer and properties lead (to meld an effect into the production's stage dynamics).
Remote controlled via Spark-fx Maestro
DMX-512 remote controlled via Spark-fx Maestro
Initial test of the fogging skull concept
Final skull artwork.
Handholdable mode or DMX-512 stage lighting control mode
Both DMX-512 remote controlled via Spark-fx Maestro
DMX-512 controlled micro fogger and LED fairy lights via Spark-fx Maestro.
DMX-512 controlled actuator via Spark-fx Maestro.
People powered bus with working head and tail lights (DMX-512 controlled via Spark-fx Maestro).
Mobile lantern (DMX-512 controlled via Spark-fx Maestro)
Some pre-run experimentation, prototyping, and construction. The THoRH production teams were a set of committed and supportive groups, a pleasure with which to work. It was a rather mammoth production across the board. And it takes a village to build these elaborate sets. It's amazing to watch it all come together.
According to the script, "there is blood on the statue!".
We wanted a carriage as a dynamic set element, travelling the bumps roads of Sherwood forest. Though we made faux turning carriage wheels for the carriage's front (as pictured below, and controlled from the lighting booth), the cast also controlled an electric drive to move around on stage (sorry, I didn't take a video of that).
A full frontal view of one of the scenes nearing completion.
This was an 11th hour request for a high school play. Nailed it!
So here is George's McGyver hack...
- bought a dollar store clock, for the basic mechanism
- planned to use the time set knob on the back, and disable the internal escapement motor drive
- took out all the gears inside that I don't need
- took apart an old cheap RC car - some gears and screws were useful. RC was not.
- bought a 360 degree servo - 130 rpm (but could have modified and existing 180 one to be 360)
- 2 part plastic glued a small gear from the car onto the time set knob
- Modified a larger matching gear to fit on the servo
- tooth ratio? - shoulda, coulda, didn't... :)
- made a wood "stand" for the servo - hot glued then screwed it onto the clock back
- used a "proper" RC receiver and Tx (FrSky) from a model plane with a 4xAA battery pack to drive the servo
This Arduino-driven version is destined for the Art Wall
The servos that I had on-hand were, surprisingly, too weak to handle a slightly misaligned clock gear; and those servos were more than a little frustrating to convert from 180 degree service to 360 degree continuous service. Though the STEAMakers lab now has a few more hefty servos, at the time to my re-attempt all I had on-hand was a 12 volt DC motor and, as luck would have it, an unused 2 channel H-bridge motor driver. Yeh!
It was a bit unexpected. The day after the previous clock design respin had been installed, the noise it generated was found to be quite disruptive to certain activities near the C.R.E.A.T.E. display. Here's the latest design respin that promises much quieter operation. (The beeping sounds are from the test equipment, not the clock.)