RPM signal input
I am new on this forum and building my first Heli with a Brain 2. It’s a Trex 800 gasser with a DLE 60cc twin
Is it possible to use only the signal wire from another rpm sensor (electronic ignition) and put it in the Brain? The sensor is then powered by the ignition and only the signal wire will be split and used in both systems.
I intended to use an align rpm sensor on the Brain (I reversed + and - and the sensor does work), and use the magnet for the ignition sensor but the Align sensor does not “see” the ignition sensor magnet.
Stator Gator needs at least 5V to work properly (but not more or HV).
On Brain2/iKon2, the GOV port can provides more than 5V which is too high for Stator Gator to work properly. Try to separate the rpm signal wire from the +/- power wires and connect only the rpm signal cable to the Brain/iKon GOV port (with an adapter cable), then connect the +/- wire to a 1S Lipo.
If you use High Voltage BEC or 2S Lipo, you must add a voltage regulator that drop your HV to 5V between servo connector and the Stator Gator -/+ power.
Read also on Stator Gator website their suggestion (swap wires):
But first try without any swap of the wires.
If also with this modification, you have problem and Stator Gator don't work, you can still use the Align magnetic sensor on your motor. You mount the sensor on the outside of your crankcase. Find the spot where the flywheel comes closest to the outside. There are some threads in the gasser forum about using a nitro pick up on a governor for gasser. However it is a more economic and simple solution compared to the use a separate governor.
Let us know if with these info's you can solve your problem.
I am not using a stator gator.
The motor I am using has an electronic ignition which requires a RPM pickup. The RPM sensor for the ignition can be used on the Brain, I tried and it worked.
But I cannot use this sensor because the ignition needs it, so my question is:
In the GOV port on the Brain, can I plug in a connector with only a signal wire (no + and - wire) which is split from the ignition RPM sensor, because I know the Brain accepts this sensor signal when the whole sensor is connected.
Of course you can,
You wrote that you have already tried it and that it works.
So all you need to do is use a Y-shaped splitter cable and send the signal to both Brain2 and the engine ignition.
If the ignition circuit power supply is common to the servo voltage, you don't have to do anything else.
Otherwise, if the voltage is different, simply remove the positive (central) cable from the connector that goes to the Brain2 GOV port and isolate it.