Difference between revisions of "User:Chotee/ultranoise"

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(Created page with "The idea is to have a µC output random noise in the 25K to 70Khz range since it's very likely there's spillover into the <20K range, we hook it in so that it only runs then t...")
 
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= TLDR =
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What: Area denial for rodents by ways of random noise
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How: Get a bunch of tweeters and drive them hard at ultra-sonic frequencies.
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When: When the space is closed.
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= Long winded =
 
The idea is to have a µC output random noise in the 25K to 70Khz range since it's very likely there's spillover into the <20K range, we hook it in so that it only runs then the space is closed.
 
The idea is to have a µC output random noise in the 25K to 70Khz range since it's very likely there's spillover into the <20K range, we hook it in so that it only runs then the space is closed.
  

Revision as of 12:40, 3 April 2019

TLDR

What: Area denial for rodents by ways of random noise How: Get a bunch of tweeters and drive them hard at ultra-sonic frequencies. When: When the space is closed.

Long winded

The idea is to have a µC output random noise in the 25K to 70Khz range since it's very likely there's spillover into the <20K range, we hook it in so that it only runs then the space is closed.

Parts needed:

  • MicroController with network
  • Tweeters
  • Amplifier that does these frequencies well (normal audio have low performance at these frequencies)
  • Case/housing
  • Some Indicator lights (power, network-ok, active)
  • Power source.

Notes:

  • Random patterns work best. Unpredictable patterns.

Ideas:

  • Get the state from the MQTT topic
  • Have a 5 min delay on the activation

Possible parts:

Similar commercial products:

References: