Wednesday, March 05, 2008


For my ME Capstone course, I'm building a distance sensing circuit which will throw a dual colored LED on way or the other depending on which site of a distance threshold the tip of the device is at.

Currently, we have a potentiometer to calibrate the device in one location and we're thinking of moving to another location with the hopes of making the device 'totally calibratable'. This is in an effort to compensate for variances in photoresistor performance.

So, I'm going to run a parametric sweep simulation to show my how the device switches for the configuration we have now, and then I will run the same simulation, moving the pot as shown above.

Here are the results from my first simulation.

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