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Unread 19-09-2009, 06:55
Needlerp Needlerp is offline
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MaxBotix Sonar Sensor - Help please

Hi,

I'm trying to wire up a MaxBotix MaxSonar EZ4 to an inverting op-amp using the analog output, to turn the 0-0.68v range I'm expecting from the MaxBotix (for my distances) into 3.4-0v.

I can get the opamp to work perfectly when using a test voltage, but as soon as I connect the MaxSonar it stops working propertly, and testing the voltages across the Analog output of the maxsonar I no longer get the full range I did when disconnected.

Am I missing something obvious? Do I need to add a resistor/capacitor somewhere in the wiring?

Many thanks
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