Ping range sensor

Luciferius

Today I got a new Ping Ultrasonic Sensor. The problem is that if I want to measure the range it will measure the range up to 14 cm. Normaly it detects objects up to 3 m.
My code:
' {$STAMP BS2}
' {$PBASIC 2.5}
' Conversion constants for room temperature measurements.

CmConstant CON 2260
cmDistance VAR Word
time VAR Word

DO
PULSOUT 15, 5
PULSIN 15, 1, time
cmDistance = CmConstant ** time
DEBUG HOME, DEC3 cmDistance, " cm"
PAUSE 100
LOOP

Franklin

Code looks OK to me.

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- Stephen

Dgswaner

I had the same problem with my stamp, it wouldn't give a reading past 30" works just fine on my Propeller tho. I think it has to do with the wait time in the code, you need to allow more time for the echo. IKD which I could help more

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"A complex design is the sign of an inferior designer." - Jamie Hyneman, Myth Buster

DGSwaner

Zoot

Try setting pin 15 low before the pulsout. Also simple things like noise on the line to the Ping.

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When the going gets weird, the weird turn pro. -- HST

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Luciferius

I tested your ideas, but it didn't work. I set the PAUSE-order to 200 and set PIN 15 low. There is another interesting fact: If I cover up the detector it will measure 327 cm.

Chris Savage

Hello,

Please contact Tech Support directly to arrange to have the PING))) sent in for testing. Take care.

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Chris Savage
Parallax Tech Support