Hi, I am a technical person, but never done anything with Arduino. Looking for feedback on creating a small wireless Motion detection system that can send digital alert messages.
The simplest way to describe what I need is equivalent to a typical wireless driveway alert device. What I need is to be able have a base receiver system that can connect to intranet\Internet and send digital alerts via email, text, ect.
Here is the current system that I own. Works great except it is a stand alone system that cannot communicate to other devices (ie computer, phone, etc) nor be controlled remotely.
What I like about this system is that it has wide area coverage that I need (1800ft). It covers the entire property without any problems (Uses FM signal I think) and it handles up to 8 different remote motion sensors that last for months without being recharged (or uses solar).
Ideally I would like to to create a receiver that can use these motion sensors, and the receiver then sends alert messages to a computer, phone, etc.
I see 8 circles around the edge of the main unit... Is there a LED beneath indicating which sensor is activated?
If so, they can be used as inputs to a suitable Arduino for forwarding messages. If the receiver is computer, messages can be sent serially from ie a Nano.
leongjerland:
I see 8 circles around the edge of the main unit... Is there a LED beneath indicating which sensor is activated?
If so, they can be used as inputs to a suitable Arduino for forwarding messages. If the receiver is computer, messages can be sent serially from ie a Nano.
Yes, the base receiver unit does have 8 lights that activate individually when motion is detected. I think what you are suggesting is a very doable solution. I will investigate further.
Robin2:
How does you existing system signal the presence of motion?
Maybe you could rig up an ESP8266 (or ESP32) (both of which have WiFi) to send a message when it "sees" the signal from your existing system.
...R
That is a good question that I need to investigate.
I am fairly confident that each sensor does NOT use a laser to detect movement when broken because the sensor detects movement that is several feet wide and at least 50ft in front. When motion is detected, the base receiver triggers a specific light (eight) and then plays a unique series of tones (different for each) that sound much like a doorbell tones.
The logical progression for the existing driveway motion detection system that I am using is to add what I seeking, send digital alerts to other devices such as computer or phone.
You can simply use WiFi. In that case, the receiver is your WiFi router/AP. The application protocol between the transmitter and your PC can be Modbus TCP. The transmitters act as slaves and your PC software acts master.
nrnoble:
I am fairly confident that each sensor does NOT use a laser to detect movement when broken because the sensor detects movement that is several feet wide and at least 50ft in front. When motion is detected, the base receiver triggers a specific light (eight) and then plays a unique series of tones (different for each) that sound much like a doorbell tones.
I would not concern yourself with how the sensing system works (assuming it does what you want).
What you need is a microprocessor system that can detect when one of the lights comes on and sends an appropriate message. A simple Light Dependent Resistor (LDR) would probably be sufficient to detect a light.
(I used the word "microprocessor" to include ESP8266 and ESP32 devices as they are not Arduinos though they can be programmed with the Arduino IDE)
Hi, I am slowly working on this project and I have another question.
With the WiFi module added to the Arduino, can it be programmed to receive the frequency of 914.8MHz?
The current motion sensors transmit on 914.8MHz, so ideally I would like to have the Arduino receive each sensor's signal directly rather than add the Arduino to the existing manufacture receiver.
nrnoble:
With the WiFi module added to the Arduino, can it be programmed to receive the frequency of 914.8MHz?
The current motion sensors transmit on 914.8MHz, so ideally I would like to have the Arduino receive each sensor's signal directly rather than add the Arduino to the existing manufacture receiver.
WiFi works at 2.4Ghz so you would need a different wireless device for 914.8 MHz.
However even with a suitable receiver things may not be simple unless you have technical details of the sensors' transmission protocol.
Ok, then its looking like it will be easier to go back the original plan of wiring the arduino to each of the LED (8 LEDs) on the manufacture's receiver. When motion is detected by one of remote sensors, the corresponding LED lights up on receiver for a couple of seconds and a unique doorbell chime is played.
