Quote:
Originally Posted by steverk
Has anybody stopped to consider the lighting on Eistein?
The lighting was very different on Einstein than it was on any other field. It was much more involved. It had moving spotlights. It was routinely dimmed.
Theatre lighting is controlled by a several pieces of equipment called "dimmer packs." In recent years, they went to wireless controls on the dimmer packs, so ugly or lengthy control wires would not need to be strung to the lighting racks.
To quote wikipedia directly:
Recently, wireless DMX512 adapters have become popular, especially in architectural lighting installations where cable lengths can be prohibitively long. Such networks typically employ a wireless transmitter at the controller, with strategically placed receivers near the fixtures to convert the wireless signal back to conventional DMX512 wired network signals...The first commercially marketed wireless DMX512 system was based on frequency-hopping spread spectrum (FHSS) technology using commercial wireless modems.[8] Somewhat later some venders used WiFi/WLAN technology. Other later generation systems still used frequency-hopping spread spectrum (FHSS) technology, but at higher bandwidth. FHSS systems tend to disturb other types of wireless communication systems such as WiFi/WLAN. This has been solved in newer wireless DMX systems by using adaptive frequency hopping and cognitive coexistence, a technique to detect and avoid surrounding wireless systems, to avoid transmitting on occupied frequencies.[9]
( http://en.wikipedia.org/wiki/DMX512)
So could this be part of the problem? Was the transmitter near the wireless access point? Hopefully someone familiar with the field can answer some of these questions. |
I was sort of thinking about that earlier...
Back when I was in high school, I was giving a demo at a basketball game. The score board was programmed wirelessly from a table on the side of the court.
When I drove the robot in front of the table, the robot died... I had to push it out of the area of that table, and it regained control.
This was using the IFI system, on the 900MHz radio, but it seems like everyone is moving their stuff to 2.4GHz nowadays.
Good thought!