Velleman lcd digital mini message board kit velleman mk157 the lcd digital mini message board kit from velleman is a miniature scrolling message board with a single line 16 character lcd display ideal for exhibitions advertising and greeting visitors br br iframe width 560 height 315 src https www youtube com embed 94vrxvs7oby frameborder 0 allowfullscreen iframe br br velleman mk157 lcd digital mini message board kit