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Spirit 2/3 with Futaba BPS-1 Sensor

Posted: Fri 25. Sep 2026 15:02:00
by ste
Has anyone already been using a Spirit 2 or 3 with a Futaba BPS-1 RPM sensor?

The sensor detects the movement of the crankshaft; the motor's maximum RPM is 20,000.
Can a Spirit unit even process such RPM values?

Thank you alredy now for your feedback.

Re: Spirit 2/3 with Futaba BPS-1 Sensor

Posted: Tue 27. Oct 2026 8:46:19
by ste
After searching the internet I've found the following:

The BPS-1 seems to have an operating voltage of 3.3V max, higher voltage might kill him.
Therefore the operating voltage must be reduced
  • either add a voltage regulator between Spirit and sensor
  • others talk about to use the Spirit satellite port to grab the supply voltage for the sensor, as there seems to be only 3.3V on the pins
BE CAREFUL: all this comes from various sources in the internet, nothing of this I've verified by myself, bit it might get an indication.

After all my reserach I decided to go to the original Spirit rpm sensor with magnets on the ventilator plate.....

Re: Spirit 2/3 with Futaba BPS-1 Sensor

Posted: Tue 27. Oct 2026 9:14:20
by ZeXx86
Hello,

users reported this sensor was working, you can use side satellite connector for powering the sensor as it provides exactly 3.3V. So if you can make Y cable and feed sensor's signal still at the PIT pin it should be all correct.