- Published in issue 7/1991 on page 14
Timecode interface for slide control (1):
Noticing that the projector is running out of step with the audio programme is pretty embarrassing when your friends and relatives have gathered to watch your carefully prepared slide presentation. The circuit described here ensures perfect synchronization between the slide controller and a music or voice programme recorded on tape. This is achieved by recording an accurate time code on a tape track and playing it back later, sending commands to a slide projector control.