ESP8266 Community Forum

I'm working on a project and I need to determine the rpm of a prop underwater.

I'm hoping some of the smart folks here can help me with a solution.

I think CiccoB did an example of a tachometer and other gauges but I could not find it.

Regards,
Jim

Hi, sounds like a fun project but we are missing some real details. Please give us half a chance of helping you.
Material of the prop.
Speed of the prop.

Do you need the javascript to make the the gauge widget on the web page or code to capture the rpm of the motor from a sensor of some sort?

Barnabybear wrote:Hi, sounds like a fun project but we are missing some real details. Please give us half a chance of helping you.
Material of the prop.
Speed of the prop.

Prop material is a hard plastic. Expected RPM range is to be between 250 and 2500 RPMS.

I really am looking for help on getting a sensor solution that would work. Today I'm going to try using a

TSAL7400 IR LED and LTR-4206E Phototransitor to see if it work underwater. a basic beam break counter.