Does Mark Spaeth still sell these ?, It looks like his site is down ? I'd be curious & would love to get a hold of an LED USB DL RPI3B+ compatible unit working along side Daphne. This is something that certainly interests me as well but it's on the back burner. I already have DL working just fine on the rpi3b+ (however no LED / USB score board) which I suppose is a good start. I also currently have a dedicated original Dragon's Lair with an OG Laser Disc, I would be really curious to see the score board working properly. I think that element is why I haven't built one yet.