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Unread 22-01-2017, 12:50
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Re: Programming Bulletin 873M Ultrasonic Analog Sensor

Quote:
Originally Posted by tr6scott View Post
We tried a voltage divider yesterday and was not able to get it to work. We only tried some resistors we had on hand... 4.7kOhm.

Our intent was to place two resistors in series, between the sensor signal, and ground, then wire the roborio signal from the common point between the resistors and ground.

All resistors we found when wired between the sensor output and ground the sensor went into an error state, and flashed red.

Was going to post our experiences today, but saw this thread. Please let me know if anyone else has success with a simple voltage divider, and what resistor values worked, pretty please.
Were you able to read any voltage from the sensor? Do you have a voltmeter to debug the circuit?

On the introduction page:
http://www.ab.com/en/epub/catalogs/1...roduction.html

The red LED only flashes in teach mode, otherwise it is off. What were you doing with the white wire?
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