In this article, we will explore how to translate analog voltages from an IR proximity sensor into digital information that we can use to determine distance away from an object. Depending on how far away the object is, a different tone can be heard.
Purpose & Overview Of This Project
The purpose of this project is to build a system that can translate analog voltages from a sensor into digital signals using window comparators. The comparator output should be used to trigger 1 of 8 tones that should play out of a speaker.
To build the window comparators that 'translate' the sensor output, we'll use LM339 quad comparators and set constant voltages for the window upper and lower limits. AND Gates, using a 7408, will be used to detect if the sensor's output is inside the 'window' and trigger the tone to play out of the speaker.