Arduino Driveway Sensor Project Issues

Using Arduino General Electronics
1

Hello there,

I am trying to get a project off the ground involving an Arduino Uno, a 2 channel relay, car dash cam and a wireless driveway sensor.

I am attempting to set up a motion detection security sensor that films when motion is detected. I did have a setup like the following using an Arduino, 1 channel relay and PIR sensor.

Instead of the light in the brainy-bits project I am using a 12V car dash cam that fires up when power is applied and begins filming and then stops and turns off when the 12V is taken away.

Unfortunately the PIR sensor isn't very suited for the location where I wish to put the camera and sensor as subjects are walking towards the sensor rather than across it so it doesn't pick up people quick enough and reliably enough.

Instead of the PIR sensor I wish to replace it with a cheap wireless driveway sensor to trigger the relay. The unit I am looking at using has a battery powered wireless transmitter that emits a signal that is received by another battery powered unit that flashes an LED and plays a tune when motion is detected.

Instead of using the PIR sensors signal wire and having a program listen for when the relevant pin goes to high and triggering the relay I wish to use the wire that goes to the speaker on the receiver to trigger the relay so when the tune is played on the receiver it applies a voltage that the Arduino can detect and activate the relay.

I have tried several googles searches looking for information and had a play round with this but I haven't had much luck. I am quite stuck on how to incorporate this driveway sensor into my project. I am very new to Arduino and programming so I would really appreciate some help with this.

Thank you in advance

Connor

2

Here's a couple of quick suggestions that might help although there may be better ways of doing this.

Use an Alarm System PIR Sensor or the PIR Sensor from a Motion Activated Light like the ones most people put in there back yards. These units will be far less directional than the Brainy Bits unit that you are currently using.

The Alarm PIR will be quite a bit more expensive, especially for one that's Weather Proofed but it will be more sensitive and more adjustable.

The motion light sensor is a great place to start because of cost and it's already weather proofed.
I've used these in several projects because most of them have relay outputs and can be used without the lights and at a very reasonable price. I've gone into these units and isolated the relay contacts from the 120VAC and now they can control any voltage I want AC or DC.

Hope this helps.