In RC hobby signal inversion may be required when connecting various components together, i.e. RC receivers to helicopter flybarless units or other flight controllers. This is particularly often required in case of one wire protocols, like SBUS, PPM or Smart Port – the last one being specific to FrSky products.
The OpenTX offers almost unlimited possibilities for configuring RC models. This article covers a detailed and quite advanced OpenTX configuration for a nitro helicopter, operating under control of MSH Brain 2 flybarless unit.
My favourite RC heli so far – the famous Synergy N7, along with the best radio ever FrSky Horus X12S.
There are many servo testers and even some servo centering tools available on the market. I didn’t find though the one I wanted to have, with selectable 1500/1520µs PWM outputs and also with 760/960µs outputs for helicopter fast tail servos.
The MAK RC Heli Servo Centering Tool may be especially interesting for RC helicopter modellers, due to its fast tail servo PWM output. Of course Flybarless controller unit can be always used to center servos, but I like to mount FBL unit at very end, without bothering about it during the build process.