Need help setting up my ultrasonic distance sensor

[Megahertz]

Hi,

Everything works as written ...

W1 = 500 is a distance of 1 meter ...

...

try 2500 instead ...

and note no measure will send back ... 5000 Pulsin units ( 50 000 µs )

Alain

Hi, it works fine with 2500. Can you please explain how you calculated 2500? Thanks

[mackrackit]

500 multiply by 5 meters...

[Acetronics2]

Hi, it works fine with 2500. Can you please explain how you calculated 2500? Thanks

Being Honest ...

1) read Datasheet Page 3 ...

4: PWM - PWM Output 0－25000US，Every 50US represent 1cm

2) read PbP Manual page 133 ...

The resolution of

PULSIN is dependent upon the oscillator frequency. If
a 4MHz oscillator is used, the pulse width is returned in 10us increments.

3) The distance is 5 meters = 500 cm

from 1) and 3) ...

4) Pulse will be 500cm * 50µs/cm = 25 000 µs

from 4) and 2) ...

@4 Mhz Pulsin will return 25 000 / 10 = 2 500 units

This is the mathematical explanation of zeu thing

Alain

PS@ Dave

Don't you think I should add " Need Help " in my signature validity conditions ???

[mackrackit]

PS@ Dave

Don't you think I should add " Need Help " in my signature validity conditions ???

Yup, need help understanding data sheet.

I think Megahertz is doing fine, sometimes know where to look is a bit different than knowing what to look for.

I just spent parts of two days trouble-shooting a machine. Tried this and that, read the manual, tried other stuff, back to the manual.....
Then the great thought hit me... I wonder if that cable on the floor should be plugged into something

[Acetronics2]

Yup, need help understanding data sheet.

I think Megahertz is doing fine, sometimes know where to look is a bit different than knowing what to look for.

I just spent parts of two days trouble-shooting a machine. Tried this and that, read the manual, tried other stuff, back to the manual.....
Then the great thought hit me... I wonder if that cable on the floor should be plugged into something

Hi, Dave

This episode of our tremendous adventures lits a little light in my head ...

Would be a nice thing to get the Holy manual opened at the convenient page just clicking for "Help" in our IDEs ... ( say " mouseover " + a keystroke on KB )

Always useful to have a look to function parameters ...

Hope IDE Creators read that post ... ( thoughts to my overseas friends ...)

Alain

[mackrackit]

At one time Jeremy and I was working on a code editor with some automated fill functions but we did not get very far before other things put it on the back burner. We was using a flavor of Basic.

Then I sorta started a cross platform editor in Python but the same thing happened, got to busy to work on it.

Normet has the "fineline" editor he working on.

I wonder how many around here would be interested in an open source, cross platform, community project?

[Acetronics2]

I wonder how many around here would be interested in an open source, cross platform, community project?

I saw one nice working " IDE " ...

Called PICabc ... limited to 16F84 and assembler ...

http://www.abc-micro.co.rs/

ftp://ftp.chatnfiles.com/Microforum/...ABC/PICABC.EXE ( demo ...)

but the concept is rather interesting ...

to be honest, I must say the MiKroElektronika IDE is really handy here ...

I know one other IDE " on the rail " but was asked not to talk about it ...

Alain