We are increasingly using chip-scale parts, like the EPC GaN BGA fets. Manufacturing handles these fine in production, running panelized boards through giant machines. But I want to do onesies of engineering prototypes. Our old prototyping techniques won't work with tiny chip-scale parts. We can do layouts and get cheap fast-turn boards, but we don't want to panelize and program the production machines.
I want some optical assistance for placing these parts manually onto single boards fast.
This video is vague about placement, and crazy about verifying placement during the process.
They don't use paste, which is good. We can use sticky flux to hold the parts in place until we heat the board and melt the balls onto the pads.
I'm thinking about something like two USB microscopes added to a manual p-p machine, at 90 degrees, peeking at low angle at the sides of the part as it's lowered onto the board. Or something like that. Any ideas?