Ultrasonic parking alert using basic stamp

fearfactorymetal

Hello.· im new to basic stamps.· Im wanting to use the basic stamp with ultrasonic sensors to sense a wall.· when the sensor senses the wall about 3 meters out i want a speaker to have a pulsed chirp.· the closer the object the faster the chirps.·· has anyone experimented with this type of setup?· any information would be greatly appreciated...

thanks
vic

hover1

This may give you something to start with.

·http://www.savagecircuits.com/forums/content.php?126-Garage-Parking-Assistant

Jim

erco

Here's·a cheaper & simpler option,· a $12·Ultrasonic sensor from China that doesn't even need a Stamp for a simple yes/no LED indicator, you could have it turn an LED on or off at a preset distance:

http://cgi.ebay.com/Ultrasound-Motion-Sensor-for-Robotic-Basic-Stamp-New_W0QQitemZ110511230652QQcmdZ

I just ordered one. It has a digital output (normally high, active low) when triggered. You can adjust the range to·one of 16 distances .3-10 M. There is a different ·version with a range from .3 to 3 M.







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·"If you build it, they will come."

Plitch

This project seems fairly simple.· I use a post mounted ultrasonic sensor aimed down at a piece of plywood to measure the depth of snow.· The sensor I use (SensComp #616105) has an output of 0 - 10 volts depending on distance (up to 20 feet).· If you use a MAX1270 analog to digital converter, this voltage can be converted to a digital value, and that value can be used to set a frequency for the beep.

Somewhere nearby is my recent post about a problem I was having with multiple inputs.· It has all the code necessary for my distance sensor, although the code for a Stamp chip used in a PLC is a bit different that if used with a Stamp motherboard and A/D converter.The title is "Does progarm section order make a difference?"



Of course, using a Ping and other A/D converter may be cheaper.· But you certainly should be able to work out how to translate the output voltage level from the US sensor to a change in beep tones.

Spiral_72

This would be VERY easy with a Basic Stamp, Ping and a noise maker of some kind. Of course it would cost $100 for the stamp and sensor [noparse]:)[/noparse]

A guy might be able to do it with just the Ping, two 555 timers, a transistor and a speaker..... with assorted resistors, caps and a voltage regulator.... Maybe $40? The idea I have in mind would give you more of a variable frequency "static" or ticks than an actual tone.

Erco's link seems the best bet though, unless this is just an excuse to build something with the stamp [noparse]:)[/noparse]

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"puff"...... Smile, there went another one.

PJAllen

Here's how to do it -- http://forums.parallax.com/showthread.php?p=636791

Chris Savage

@erco - please re-read your sig line.

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Chris Savage

Parallax Engineering
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erco

All good, Chris! Besides, this may backfire on me yet. I emailed the China seller about the U/S sensor I mentioned and bought. I asked how to adjust the timing and distance, and his poor english seemed to imply that it's not adjustable... [noparse]:([/noparse] Description clearly states... Will advise.

In the mean time, Guys, "Build it (with Stamps and genuine Parallax parts) and they will come!"

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·"If you build it, they will come."