This started out as just a stock Mobula7, but a bunch of things were improved or replaced after crashes.

I want to fly this mostly on 1S, but the stock configuration (even with some decent tuning) was useless and almost unflyable on 1S (lots of crazy wobbles and bouncing and generally felt very underpowered).

Here's the most important changes:

• 3-blade props instead of 4-blade for increased flight time
• 1S 650mAh instead of 250mAh for increased flight time (fits perfectly into the frame)
• props out instead of props in to get rid of yaw washout
• 19000KV motors instead of the stock 16000KV because 16 felt very underpowered for 1S (would probably even go with 22000KV if I would do this build again)
• JHEMCU Play F4 board because the original Crazybee board died
• FrSky XM for increased range (and because the JHEMCU FC doesn't come with an SPI receiver built in)
• XT30 connector instead of the stock PH2 for improved flight time and less voltage sag

The following settings helped too:

• Betaflight 4.2.x
• RPM filtering
• Whoop presets from UAV Tech (https://theuavtech.com/presets/)

Overall, those changes allow me to fly for about 5-6 minutes with lots of throttle. Flies very stable, no wobbles, even without much tuning.