From crowfunding a High-speed camera (1500fps at 720p).
Impressive set of ports on the right hand side in the photo !
I love that HFS Stuff!
This seems to be pretty quality 
Starters could go with a Sony RX100 VA, VI or VII. These go up to 1000 FPS. I use my VA for unstabilized shots of movement at 120 FPS mainly, sometimes 250 FPS.