Google Playstore lists a group of motion sensor apps that can be used as sensors if an MP3 player or adapted smart phone is used in conjunction with or as the sound unit. The flat honeycomb speaker would plug into the ear phone jack.
The apps use the camera capacity of the phone to detect a motion by a break in the light differential. Some use facial recognition which is nice but not applicable to what's needed here (and conceptual reasons play into it as well--I'll explain another time).
Interesting that most apps transfer a message or take a photo and email it when they detect someone/something in their range, and that range can be quite specific. Some will operate when they hear a sound, however, for this installation it's useless.
Others operate the mechanism when the sensor is tripped, and that's what's of interest in this project: the device can play the stored sound data (bird calls and machine sounds, for example) upon the sensor being tripped. Most work with android, not Apple products.
Jastrzab, developed Motion Detector, which plays a sound when a motion is detected. It has other features which could be useful to the project--like an adjustable delay between events--creating options in the playback delivery. It also works with the screen turned off, which saves a lot of battery power. Of the others, it's the only one I've noticed that can be calibrated; but it's only a matter of time before all apps can do that.
They also develop a range of motion-sensitive apps, including a microphone. Far more interesting is an app called Disable, which saves energy by disabling wireless internet connections (something not needed in the exhibition space, especially if a phone is opted over an MP3 player). Others that
work more specifically must exist, so the search continues.
https://play.google.com/store/apps/developer?id=Jastrzab
The apps use the camera capacity of the phone to detect a motion by a break in the light differential. Some use facial recognition which is nice but not applicable to what's needed here (and conceptual reasons play into it as well--I'll explain another time).Interesting that most apps transfer a message or take a photo and email it when they detect someone/something in their range, and that range can be quite specific. Some will operate when they hear a sound, however, for this installation it's useless.
Others operate the mechanism when the sensor is tripped, and that's what's of interest in this project: the device can play the stored sound data (bird calls and machine sounds, for example) upon the sensor being tripped. Most work with android, not Apple products.
Jastrzab, developed Motion Detector, which plays a sound when a motion is detected. It has other features which could be useful to the project--like an adjustable delay between events--creating options in the playback delivery. It also works with the screen turned off, which saves a lot of battery power. Of the others, it's the only one I've noticed that can be calibrated; but it's only a matter of time before all apps can do that. They also develop a range of motion-sensitive apps, including a microphone. Far more interesting is an app called Disable, which saves energy by disabling wireless internet connections (something not needed in the exhibition space, especially if a phone is opted over an MP3 player). Others thatwork more specifically must exist, so the search continues.
https://play.google.com/store/apps/developer?id=Jastrzab
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