This is my first post in the forum. If there is any mistake please let me know to correct it.
I am working on a project where I need to detect object in a range of 0 to 20 cm. In the begining I tried with HCSR04 sensor but these sensors are not waterproof and lower directivity according to my requirement. I looked through different companies for my required sensor. Now my inquiries are-
Is there any ultrasonic sensor available that I might miss ? (Requirements are: minimum range (2-6 cm), waterproof for outdoor application, Higher directivity)
If not then how can I make my current HCSR04 sensor waterproof. Any special casing for sensors which will allow wave to propagate through the casing box?
I already have checked but the problem is the detection range. Typically the minimum range of car reversing sensor is 20 cm which is against my requirements. I need a sensor which works in the minimum range between 2 cm to 6 cm and I am not concern about the maximum range.
And regarding directivity, this could be considerable as it is really hard to match everything with the requirements. Any solution ?
sumon94ctg:
I already have checked but the problem is the detection range. Typically the minimum range of car reversing sensor is 20 cm which is against my requirements. I need a sensor which works in the minimum range between 2 cm to 6 cm and I am not concern about the maximum range.
And regarding directivity, this could be considerable as it is really hard to match everything with the requirements. Any solution ?
This one has 2 transducers instead of 1 therefore has less minimum detection distance as compared to JSN SR04T or DYP-ME007Y. It is also completely sealed and waterproof.
Before finalizing on this I had bought another one which was a waterproof modified version of HC-SR04 from here
The 1st one is much more rugged and waterproof as compared to the latter one because the actual transducers are not waterproofed in the modified HC SR04.
If you're not too dead set on ultrasound, the Sharp distance sensors (comes in various types with different ranges) looks pretty easy to waterproof. Maybe not for under water use but some hot glue or epoxy should be able to make it pretty much rain proof.
wvmarle:
You're a bit late to the party, mate. We haven't heard from the OP in almost 18 months.
True, but this being an internet forum, galvanised into digital history, answers are still useful for people who search at a later date... clever innit?
It could able to detect from 3cm to few meters. Internally it has 8-bit microcontroller so it works with UART interface. all waterproof sensor needs transformer based excitation. I believe this also has transformer inbuilt.
