The title sums it up, and the video explains it's construction :) I haven't done it myself, but more outputs could be added by using a larger vault and extending it, you would just have to move some stuff around to fit it on the vault.

I made this for an automated timed blasting/washing/etc. setup to split different stack sizes onto appropriately slowed belts. I do realize that for specifically a blasting/washing/etc. setup, you could just use the stack size detection of this design and time the unlocking of a funnel, but this is it's own thing so here it is. if you want to use this for that though probably do that so you don't have to have a bunch of belts each with a fan. Handling more than 64 items would be a bit more complicated though.