The artwork Absent Sky is an approx. 5.5m x 10m spatial installation, in which the absolutely black ceiling in the white room moves like a cloud and exerts a breathtaking effect on the viewer. The technical peculiarity is the material of the ceiling, it is made of a fabric with nanotubes that absorbs over 99.9% of the light and is therefore absolutely black to the eye. But the animation is also a technical feature.
The fabric hangs on 136 winches, which move the fabric up and down via strings. The winch or its motor is controlled by the brushless controller owlDrive, which is coordinated with the central control program via CAN bus communication. Each of the 136 owlDrive is permanently monitored and controlled with 5-10 commands per second. For this purpose, we have extended the CAN protocol to be able to operate a significantly higher number of owlDrive synchronously.
Link to the Artist: https://muhannadshono.com/
