HB68 1s Whoop

By nitram509 on Jan 14, 2023

2  42  0

This build is based on Micro X68 - Brushless 2s Tiny-Whoop-ish and can be considered a rework.
I was not satisfied with handling the 2 LiPos (2x1s to gain 2s) and decided to stick with 1s. Also I wanted to reduce weight, by replacing the Super_S Stack with a modern single FC board with ELRS receiver and VTX included.
Also, the DYS BE0703 motors were OK, in terms of power, but their press-fit shaft did not withstand me switching propellers, and so I accidentally removed the bell of a motor, twice. These new HappyModel motors use c-clips to prevent such.

Getting the onboard ELRS receiver working with latest ELRS 3.1.x and EU LBT settings took quite a while and required me to use a custom build, luckily provided by Dale Larson, Betaflight 4.3.1 with ELRS 3.0 SPI Support.

I own the frame for quite some time and I'm no more able to find a proper link to buy it ... hence the link in the part list below shows the BND version - whereas I only bought the frame.

The LED mount looked solid, but unfortunately did not survive the first handful test flights. I ripped of the solder pads and now can't use LEDs anymore :/

The motor wires are glued with transparent Rubber Dip (Plasti Dip) to stick them to the frame. Also, I put some Rubber Dip on the carbon frame parts at the botton to avoid slipping of batteries.

The cam OV231 delivers, despite its age, actually quite a solid video performance. It easily outperforms other cheap super lightweight cams, but is somewhat second place IMHO to a Caddx Firefly or Caddx Ant Lite. The cam weights just 1,8g (in the picture it was tared with the plastic bag before).
The camera mount I also have at my desk for some years already and it's super lightweight, just 0,6g - unfortunately I can't find a store to get fresh ones anymore. If you know one or have some spare ones for me, please ping me :)

The total flight time is about 4m with cruising speed. And, there's a very recognicable difference with the GNB27 connectors, compared to the PH2.0 I used before. I observe less voltage drops.

Photos

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