I built a 4s Tadpole 3 screamer that uses DJI digital.

Every since Armattan created their Tadpole frame, I have wanted to put DJI digital into one of these tiny frames. Alas, the DJI Air Unit was too big for the tiny Tadpole. Then came the Caddx Vista, which would fit in the Tadpole, but not with the full-sized DJI camera. Then came the Caddx Nebula camera. The nano size was going to be a perfect fit.

The next issue would be the sloping top plate of the Tadpole, which slopes from 20mm at the front to 14mm at the back. I decided to use the Tadpole 3" frame, but it retained the very same area for electronics. I found a 3D printed mount (PLA) that would allow the Vista to be mounted directly above a Whoop style AIO - but still the height was 3mm too short, and in addition it still sloped to about 14mm in the back of the top plate.

The solution for the vertical space needed came from some spare hardware left over from a GEPRC Cygnet CX3 that could provide the 2 rear brackets for the Tadpole, which raised the height of the top plate to 23mm - enough to fit the BetaFPV AIO, the 3D printed mount, and the Caddx Vista. I use 4mm standoffs at the front of the top plate to give 23mm room for AIO, 3D mount, Vista, and battery strap.

Originally, I used Gemfan Hurricane 3016 props, but changed those out for the Emax Avian 3x2.14x3 still giving about 6 minutes flight time. The Tadpole 3" HD weighs about 110 grams, with AUW of 165 with 450mAh 4s lipo. I also changed out the RushFPV Cherry antenna that came with the Vista for a simple whip antenna to save some more weight.