Is there a way to weatherproof a cheap ($15-25) ultrasonic sensor for moderate outdoor use? I know Maxbotix sells weatherproof sensors, but these run for $100 each, which is too steep for my project. I just need a sensor to resist light rain. Is there any simple modification I can do, like cover the sensor in saran-wrap, to protect it from small amounts of moisture? i.e. What firm materials are transparent to ultrasound?
Electronic – Weatherproofing a cheap ultrasonic sensor
sensorultrasound
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Best Answer
First of all, the module you linked to can be found at ebay for ~$2 (check this one) and here you can find only the waterproof sensors (Rx and TX) for about ~$5, so maybe you can get those two (the cheap module and the waterproof sensors) and swap the non-waterproof with the waterproof if their specs matches.
Or get a waterproof one that is ready with the module for about ~$14 here
or this one which is mostly used for car parking assist kits for ~$16 here
you still need to protect the circuit board but that should be easy.