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SR04 ultrasonic module for outdoor use

SR04 ultrasonic module for outdoor use

SR04 ultrasonic module for outdoor use

I've been looking for (cheap) outdoor ultrasonic sensors but could not find any assembled in a module (except Maxbotix which are out of budget).
So I am thinking if changing the transducers on the SR04 module to waterproof type might work. Any feedback is welcome.

My application is for a trip alarm sensor to be used outdoors and possibly having a narrow angle as possible.

RE: SR04 ultrasonic module for outdoor use

Moonwalker031, I understand that you need a narrow angle ultrasonic sensor in low budget but I highly doubt you’ll get a reliable one. I recently made such a trip-sensor for outdoors using laser beams which produce an interrupt when the beam is cut. The range was 250m which is quite a lot considering the fact that it uses less power as compared to ultrasonic sensors.

Levent Caliskan

RE: SR04 ultrasonic module for outdoor use

Thanks for your help m8. I have a similar one using IR led with a range of about 20m. I tried using a laser but focusing it was a headache and so used the IR LED.

However this time I cannot use a reflector so am testing Ultrasonic.

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