ESP8266 Community Forum

- Fri Jul 08, 2016 1:38 pm #50411 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

- Fri Jul 08, 2016 5:11 pm #50420 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.

- Fri Jul 08, 2016 6:06 pm #50421 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?

Serial terminal in the chrome browser see https://serialTerminal.com

http://esp8266basic.com
A BASIC interpreter for your ESP

Working now on Autodrop3d. A 3d printer with automatic part ejection system. https://autodrop3d.com

- Sat Jul 09, 2016 8:39 am #50449

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.