Well, they are plastic tipped darts, so no real worries there. I think I did a post a few yeas back on what was going on with the lcd panel. I don't actually have it running right now because I have been fooling with different FEs lately. The cab is acting more as a test bed ATM.
Simply it's a 4x40 lcd and I know for sure that the LED/LCD plugins in Mala and I believe game-ex as well will send info to it as well as the BetaBrite on the top of the cab. However I had created .lcd files that I send to the display that actually show which controller layout each mame game or console system used and then game instructions. MAME was tedious but the consoles were easy. So it is my instruction display while the beta brite shows game name, manufacturer, year, etc.
It's a serial LCD display
Also the reason that the game name on the beta brite says gauntlet when the game obviously isn't gauntlet is because the cab is in Playstation 2 mode, i have a component to vga cnverter with a selector switch.
I almost hate to say it...but the cab is a slikstick... from back when they used to fulfill orders lol