Waterproof bike alarm out of ABS

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SUMMARY

The discussion centers on creating a waterproof bike alarm case using ABS plastic. The user has drilled holes for sound emission from the buzzer but is concerned about water entering the circuit during rain. The ABS material is inherently waterproof; however, a solution is needed to prevent water ingress without obstructing sound. Suggestions include exploring alternative sealing methods that maintain sound quality while ensuring circuit protection.

PREREQUISITES
  • Understanding of ABS plastic properties
  • Basic knowledge of electronic circuit design
  • Familiarity with sound transmission principles
  • Experience with waterproofing techniques
NEXT STEPS
  • Research effective waterproofing methods for electronic devices
  • Explore sound-permeable waterproof membranes
  • Investigate the use of silicone sealants for circuit protection
  • Learn about acoustic filters that allow sound while blocking water
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DIY electronics enthusiasts, product designers, and anyone involved in creating waterproof solutions for electronic devices.

Gughanath
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I have made a case for my bike alarm out of ABS. I have drilled holes to allow sound from the buzzer to come out. Now, the problem is, if it rains, my alarm will get damaged because the water would flow through the holes into the circuit. The ABS is waterproof already, but how can I prevent the water going into the circuit without blocking the sound from the buzzer? :confused:
 
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Line the holes with cellophane?
 
that would not be good idea because the tape would come off
 

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