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Unread 11-02-2008, 09:14
windell747 windell747 is offline
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Re: Maxbotix Ultrasonic Sensor Help...

How are you sequencing your sensors? I've bought a couple and it seems that the only way to sequence several of these sensors is to cycle the power for each one.

I dont have the sensor documentation in front of me, so I'm going off of memory, but there is a 49ms period after cycling the power for a calibration period. During this period, nothing should be "close" to the sensor. Specifics of how close isn't mentioned, but it did say that if there is something close the readings can become inaccurate until it is calibrated properly at the next startup. After calibration it takes another 49ms to get your first distance reading so to get your first reading it will take approx 100ms from startup. You want to make sure that you cycle your power for each one at periods longer than this.

Hope this helps!