I'm planning to build a obstacle radar for cars and because I'm going to use it on a car it has to be weather proof. I bought this one http://www.amazon.com/dp/B0055XCLK4 to use it's sensors but I could not find any information about the sensors. I made couple test with them but I could not get a reliable reading.
All the sensors I found are not weather proof. (ie: ultrasound) IR maybe but I'm not sure how it works under the rain.
Could you recommend me a weather proof proximity sensor?
They are ultrasonic, it clearly says so on the Amazon page you linked to.
I'll test with ultrasonic sketches.
I think those are bare transducers, without any drivers or amplification, except in the control box.
I'm not sure any of the standard u/s libraries will work.
You could try buying a single transducer design like an SRF02, and replace the transducer with one of the ones from the car kit.
johnwasser:
The sensors you bought are weatherproof: "Anti-freeze and rain proof."
They are ultrasonic: "Ultrasonic frequency: 40KHz"
Perhaps you could borrow an oscilloscope to measure the signals going to and from the ultrasonic sensors.
I checked for ultrasonic sensors and most of them has 3 connections (+5, ground, pulse) but the one I've has only 2 connections, I assume one of them is ground and the other is pulse.. I'll try and let you know..
AWOL:
They are ultrasonic, it clearly says so on the Amazon page you linked to.
I'll test with ultrasonic sketches.
I think those are bare transducers, without any drivers or amplification, except in the control box.
I'm not sure any of the standard u/s libraries will work.
You could try buying a single transducer design like an SRF02, and replace the transducer with one of the ones from the car kit.
I already ordered a SRF02 type sensor but the one I got with the kit is very cheap (~$1.5) and already weather proof. If I can find a way to use it it would be perfect..
I checked for ultrasonic sensors and most of them has 3 connections (+5, ground, pulse) but the one I've has only 2 connections, I assume one of them is ground and the other is pulse.
Ready-built sensors have drivers for the output pulse and amplification for the returned echo; I think the car kit devices are bare transducers (hence the low price), and have neither, which is why I suggested removing the transducer from the SRF02, and replacing it with the wires from one of the car kits devices.
If it doesn't work, then it's time to get your scope out, and figure how it works with the supplied control box.
Actually, that's what I would do first, but with my scope, not yours.
I checked for ultrasonic sensors and most of them has 3 connections (+5, ground, pulse) but the one I've has only 2 connections, I assume one of them is ground and the other is pulse.
Ready-built sensors have drivers for the output pulse and amplification for the returned echo; I think the car kit devices are bare transducers (hence the low price), and have neither, which is why I suggested removing the transducer from the SRF02, and replacing it with the wires from one of the car kits devices.
If it doesn't work, then it's time to get your scope out, and figure how it works with the supplied control box.
Actually, that's what I would do first, but with my scope, not yours.
Since I dont have a scope (or a friend with one) I've to wait for the sensor I ordered to test your idea. Thanks for the advice.
mtD:
I checked for ultrasonic sensors and most of them has 3 connections (+5, ground, pulse) but the one I've has only 2 connections, I assume one of them is ground and the other is pulse.. I'll try and let you know..
I tried and it failed, nothing returns. I'll wait for the sensor I ordered to test AWOL's idea..