Squirt is a 160mm 3" ducted quad. The ducts generate about 240g more thrust so Squirt is a peppy flyer that can carry a Hero. They also double as prop guards so it's safer to fly in close proximity to people.
You can order with or without 3d printed parts, and with or without the Hero mount. If you want to print your own parts the files are here. Hero8 parts are here. All versions come with standoffs and hardware.
4 in 1 esc, 1407-1507 3200-3600kv motors recommended. 36x36 or 20x20 stack.
The fpv cam mount holds a micro cam.
HQ 4x4.3x3 props cut down to 3" have performed best. You want a bullnose tip that hugs the ducts. Keep the gap at a minimum for maximum efficiency. Prop cutter tool available here.
DJI FPV versions have 40mm tall standoffs and include a holder for the air unit and its antennae.
There are three Hero mount options: fixed and damped 10 degree, undamped variable angle, and damped variable angle.
Here's some build tips!