Hello all!
I have been working on an idea in which pedestals on a stage each contain a device which outputs continuous audio, i.e. an environmental sound machine or chant box plugged in to a small amp. The volume is controlled via an optocoupler (AKA vactrol - consisting of an LED/LDR pair). The LED brightness is controlled by a PWM pin on an embedded ATMEGA328 microcontroller. The desired effect is that as a dancer moves closer to the pedestal, the audio level increases. I have it working on a breadboard with an ultrasonic sensor, but it's quite jittery reading off of clothing. I have been trying to come up with alternative means of accomplishing this. I think IR range finders will be jittery as well. I am not opposed to having the dancers wear a small transmitter and modulating the PW by way of signal strength. I have even thought about trying to hack a laser tape measure from Home Depot, but that seems tricky. Basically, I'd like to achieve the desired effect with as little jumpiness as possible. I have been researching this in great depth, and I wanted to put out a feeler here. Thanks in advance for listening!
I have been working on an idea in which pedestals on a stage each contain a device which outputs continuous audio, i.e. an environmental sound machine or chant box plugged in to a small amp. The volume is controlled via an optocoupler (AKA vactrol - consisting of an LED/LDR pair). The LED brightness is controlled by a PWM pin on an embedded ATMEGA328 microcontroller. The desired effect is that as a dancer moves closer to the pedestal, the audio level increases. I have it working on a breadboard with an ultrasonic sensor, but it's quite jittery reading off of clothing. I have been trying to come up with alternative means of accomplishing this. I think IR range finders will be jittery as well. I am not opposed to having the dancers wear a small transmitter and modulating the PW by way of signal strength. I have even thought about trying to hack a laser tape measure from Home Depot, but that seems tricky. Basically, I'd like to achieve the desired effect with as little jumpiness as possible. I have been researching this in great depth, and I wanted to put out a feeler here. Thanks in advance for listening!