Discussion archive for uweschmidt.org
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sasha on Wiimote Whiteboard
dear Uwe,
we are trying to use Wiiremote under Whiteboard Version 1.0.3 (20100605) on MacBookPro in a circus performance. The video is projected on the floor of arena (12m diameter) Wiiremote is installed under the top of the circus arena at a heigth of 19 metres. Our purpose is to track the positions of four actors and to transmit the information about their positions using the protocol TUIO. We constructed IR torches (each of them consists of 7 IR LED) for the indification of artists’ positions. As the distance between Wiiremote and the computer is about 20m, the built-in bluetooth device is not powerfull enough to transmit a stable signal. For that purpose we use external bluetooth adaptor. Also we made a remote control for buttons 1-2 of Wiiremote. We use 2 usb-adapters “transmitter via Ethernet” on both extremities of Ethernet-cable to transmit usb-signal on long distance. Bluetooth dongl is installed at a distance of 5cm from Wiiremote. During the rehearsals the system works perfectly. But during the performance in the presence of 500 spectators Whiteboard looses connection with Wiiremote. Sometimes the connection might be maintained about 30 min, sometimes connection might be lost in 1 min. We tried different modification of bluetooth devices: BT1.1, BT2.0, BT2.0+EDR. We used to have a long list of constantly changing bluetooth devices in the log window when we used BT. When we used BT+EDR we had a bit another results: the list of bluetooth devices reloaded before installing connection with Wiiremoter (4 messages in the log window). After the stream of messages stops and the Wiiremote holds the conection for a while. After Whiteboard suddenly looses connection. What can be the reason of the problem? Is it because of big ammount of cellphones which have an activated bluetooth? Or may be it can depend on interference caused by lightening equipment, radio signals or winches? Or may be there’s a conflict between the built-in bluetooth device and the external one which is installed right under the top of arena? We choose bluetooth device with the shortest operating radius (10m) and it has to skip the bluetooth devices of spectators. The computer is situated on the top range at the center section.
thank you
best regards
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