Thursday, July 27, 2017

Wraith32 motor controllers and Omnibus F7 flight controller. The perfect pair.

I just got 5 Wraith32 35 amp motor controllers and an Omnibus F7 flight controller from http://MyAirBot.com.

The Omnibus F7 flight controller and Wraith32 motor controllers are the perfect pair because they can both handle 32khz gyro and motor update speeds.

The Omnibus F7 has dual gyros, an MPU6000 and an ICM-20608. If you don't want to worry about soft mounting, use the MPU6000. If you want the fastest lowest latency control of your motors, then use the ICM-20608. The ICM-20608 is also known as RaceFlight's Super-Secret-Gyro (SSG). AirBot manufatures RaceFlight's boards, so they have had access to the SSG since it was first available. The ICM-20608 uses the fast SPI bus like the MPU6000 but it can run at 32khz instead of 8khz. The F4 flight controllers can barely handle 32khz, so this F7 is much better equipped for the job.

The Wraith32 motor controllers are able to be updated at 32khz. They are the same size as the AirBot's older Super RacerBee 30 amp motor controllers. They are 30x16x6mm and weight 4.8g. They support 3-6s voltages and 35amps current sustained and 45amp bursts. They have some new features such as current limiting and voltage limiting to stop them from burning up. Each has one high powered RGB led that can light up your quad's arm and help indicate which side is forward and which is backward. These are 10x brighter than the leds on some other motor controllers like the superbee. They are already activated and work right out of the box with with DSHOT1200. When updating Blheli32 firmware on them a check will be made of their serial number against an online database for re-activation. Re-activation only took a split second and flashed on the screen with no user intervention while the firmware was written. To use BetaFlight pass-through programming you have to use BetaFlight 3.2 which is currently in Beta but has some amazing new features.

To update these motor controllers you will need Blheli32: http://www.blheli32.com/download/
To use BetaFlight 3.2 you will need a new BetaFlight configurator 3.1.2 or higher: https://github.com/betaflight/betaflight-configurator
To install BetaFlight 3.1.2 Configurator you will need to download it, unzip it, then in Chrome go into Settings, More Tools, Extensions enable developer mode, load unpacked selection, and choose the dir where you unzipped it.
and a BetaFlight 3.2 hex firmware: https://ci.betaflight.tech/job/Betaflight/lastSuccessfulBuild/artifact/obj








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