Society of Robots - Robot Forum

Software => Software => Topic started by: wowla on June 20, 2011, 09:46:54 PM

Title: using the PING ultrasonic sensor
Post by: wowla on June 20, 2011, 09:46:54 PM

Hi everyone, I am new here. I am doing a school project that require us to use the H8S2633R microproccesor to program the PING ultrasonic sensor. I have already done triggering the pulse, but I could not get back the echo. I use a digital oscilloscope to find what is the problem and the result is that the echo that is returning to me is only about 0.5V. It is not enough for the microprocessor to determine it as high. So, what is my problem? hardware or software? thanks for helping me :)

Title: Re: using the PING ultrasonic sensor
Post by: garrettg84 on June 21, 2011, 05:41:26 AM

Take a look at op amps. That should fix you right up.

Title: Re: using the PING ultrasonic sensor
Post by: joe61 on June 21, 2011, 06:33:56 AM

Quote from: wowla on June 20, 2011, 09:46:54 PM

I use a digital oscilloscope to find what is the problem and the result is that the echo that is returning to me is only about 0.5V. It is not enough for the microprocessor to determine it as high. So, what is my problem? hardware or software? thanks for helping me :)

It might be a power problem, are you sure it's getting 5v? In my experience they just don't work well without that.

Joe

Title: Re: using the PING ultrasonic sensor
Post by: garrettg84 on June 21, 2011, 01:00:58 PM

Quote from: joe61 on June 21, 2011, 06:33:56 AM

It might be a power problem, are you sure it's getting 5v? In my experience they just don't work well without that.

+1 for this. I've seen a few other people have their ping sensor issues resolved with a better power supply right in posts on this message board.

Title: Re: using the PING ultrasonic sensor
Post by: wowla on June 22, 2011, 10:16:19 PM

Thanks, the problem have been resolved. :)

Title: Re: using the PING ultrasonic sensor
Post by: garrettg84 on June 23, 2011, 04:27:53 AM

Quote from: wowla on June 22, 2011, 10:16:19 PM

Thanks, the problem have been resolved. :)

What was the solution?

Title: Re: using the PING ultrasonic sensor
Post by: wowla on June 23, 2011, 08:32:48 PM

the power supply did not supply exactly 5v.