
I have an monster truck with a nitro engine.
I wanna have RPM data of the engine, FrSky's optical sensor doesn't really help.

and magnet on the flywheel.

Did anyone try it ? If yes do i need one magnet ? can i have 3 on the flywheel and set it up as 3 blades on the firmware?
My hardware is this:
D8R-II plus
FSH-01 (the hub)
It's the old telemetry system.

PS: Sorry if post that on a wrong section
