The Hobbymate Asteroid is a new 3 inch quadcopter that is available in kit, BNF or PNF formats that is available with motors and electronics suitable for 4s or 6s (!) operation. Following on from the awesome Hobbymate Comet (built here and reviewed here) this is another premium set of components at a spectacular price. It is available exclusively from HobbyCool.com here:
The purpose of this blog is to show how I have built in close detail and how I have set up betaflight software for optimal performance. Note you can spend an extra $30 to have this build with a FRSKY receiver but I always like to tinker and optimise my build which is why I have chosen this path.
I like to take my time on a build and ensure I have a clean well lit area. Makes things easier when I inevitably drop screws or small parts on the floor. My recommended list of budget tools is here.
The first thing you will need to do here is update your betaflight configurator to the latest version (10.5.1 for me at time of writing) and then update your flight controller too - 4.0 at time of writing. The target as you can see below is OMNIBUSF4SD. Once I have confirmed board orientation is correct (note: it is as installed above) and motors direction is correct (I prefer props out) then we can customise. For the tune I went with the betaflight community presets as linked below; namely 3" Quad - 14xx-15xx Motors (in coordination with George Hartmann). I found this to be a great start point for PIDs and filters - much better than default which is targeted towards 5 inch.
Please see screengrabs below for customised setting or grab just use my diff file driectly below for all of my customised settings.
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Check back soon for my full review and DVR. In real time I have already maidened and flown several packs on 3s and 4s. I can give you a quick spoiler that it is ludicrously fast on 4s.