Alex_rcpilot
Member
This's interesting,mechanical scaning LED screen.A single column of RGB LEDs are placed along one generatrix of a cylinder.The cylinder rotates at a high speed and a cylinder screen is formed.Below is such a screen composed with three individual channels of video signal.Which all look really clear.
I think I know how to synchronize the scaning.A switch hall sensor and a precision division algorithm will provide sufficient accuracy for the LED column to synchronize while rotating.But how the heck did they feed the video into the rotor anyway?I've heard the video source are computers.Presumably they use VGA signals?3 channels of VGA signal involve up to 9 analogue channels,I seriously doubt if there's any way to feed them all into the rotor without distortion.I think the most probable solution they are using is bruh-ring structure.For modulated signal with only one channel,a laser beam along the axis is also possible.What're your ideas my friends? :roll:
I think I know how to synchronize the scaning.A switch hall sensor and a precision division algorithm will provide sufficient accuracy for the LED column to synchronize while rotating.But how the heck did they feed the video into the rotor anyway?I've heard the video source are computers.Presumably they use VGA signals?3 channels of VGA signal involve up to 9 analogue channels,I seriously doubt if there's any way to feed them all into the rotor without distortion.I think the most probable solution they are using is bruh-ring structure.For modulated signal with only one channel,a laser beam along the axis is also possible.What're your ideas my friends? :roll: