Car radar sensor only has two pins. I'm not sure which one does what.

I recently bought this waterproof car radar sensor for a potential project. The issue is that the cable seems to only have two pins.

I'm not sure how I can use this sensor on my Arduino, usually the sensors I dealt with had a third PWM pin. How would I use this sensor on my Arduino?

Thank you.

Amazon.com: Ultrasonic Parking Sensor Car Reverse Back Up Radar: Automotive

Former Member over 11 years ago

I also might use this sensor.
5 Pcs 18mm 40KHZ Waterproof Ultrasonic Sensor Receiver Transmitter R T in 1 | eBay
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jw0752 over 11 years ago in reply to Former Member

Hi Jae, Both of the items you show are raw sensors that require additional circuitry that can provide a 4 kHz driver pulse and then be able to measure the time for an echo to return, hear the echo and amplify the echo so that it can be detected by the control circuitry. While the Arduino could provide the processing and control of this activity if properly programmed it would not have the power necessary to send the pulse or to be able to sense the echo without peripheral support circuitry. It looks like the sensors that they are selling are for replacing automotive bumper sensor that tie into the vehicle's computer and driver circuits. Also the frequency that is mentioned for these sensors is really ultrasonic and has nothing to do with RADAR. As I am sure you know there are Ultrasonic and IR sensors that are provided with the support circuitry built in for distance sensing on the Arduino , the 3 wire units that you mentioned.
John
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autodeskguest over 11 years ago

Jae A. wrote:

I recently bought this waterproof car radar sensor for a potential
project.

This is the support newsgroup/forum for the layout program Eagle (by
Cadsoft).

So your question is off topic here.
--

Lorenz
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