Anenometer reading

Earl Foster

To start with ... I realized tonight that it has been several years since I last posted on this forum and just as long since programming the prop. WOW - things have changed.

My project requires the use of an anemometer and unlike the Stamp there is no Schmitt Trigger function in the propeller (that I am aware of) and this dampening function is needed. I reviewed a number of posts concerning the use of many different devices but became overwhelmed and confused.

I think I have decided to use either a 555 or 74LS14 because it is what I have on hand at the moment. With the Stamp I used the CONFIGPIN Schmitt command to reduce bounce and used the COUNT command to count the number of rotations ... very easy but I am not that lucky now. I really do not know how to code it in the Propeller and the older thread I found did not have any code samples. Perhaps I can get some direction and assistance with the writing the code. I might be over thinking this too. It’s been a while since I used the Prop and need to get myself reacquainted with it.

Thanks
-earl

Publison

Earl Foster wrote: »

To start with ... I realized tonight that it has been several years since I last posted on this forum and just as long since programming the prop. WOW - things have changed.

My project requires the use of an anemometer and unlike the Stamp there is no Schmitt Trigger function in the propeller (that I am aware of) and this dampening function is needed. I reviewed a number of posts concerning the use of many different devices but became overwhelmed and confused.

I think I have decided to use either a 555 or 74LS14 because it is what I have on hand at the moment. With the Stamp I used the CONFIGPIN Schmitt command to reduce bounce and used the COUNT command to count the number of rotations ... very easy but I am not that lucky now. I really do not know how to code it in the Propeller and the older thread I found did not have any code samples. Perhaps I can get some direction and assistance with the writing the code. I might be over thinking this too. It’s been a while since I used the Prop and need to get myself reacquainted with it.

Thanks
-earl

Welcome back earl,

there is a new application note on the Parallax Semiconductor site that may be right up your ally:

AN015: Creating Schmitt-Triggered Inputs on the P8X32A Propeller Microcontroller



http://www.parallaxsemiconductor.com/an015

Earl Foster

Thanks. That was a lot of help.