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Freetronics Security Sensor Shield


Photo: Jonathan Oxer

Shield URL: Security Sensor Shield
Tags: sensor, input, security, pir, motion
Maker: Freetronics

This shield allows up to 4 security sensors to be connected to an Arduino with full End-Of-Line (EOL) support to detect tampering with the sensors or cable. End-Of-Line technology allows the system to detect a variety of events using a single cable pair to the sensor, including:

  • Sensor triggered.
  • Sensor cable cut.
  • Sensor cable short-circuited.
  • Sensor housing opened (even when system is disarmed)


Supported sensor types include:

  • PIR (passive infrared) motion detectors.
  • Microwave motion detectors.
  • Reed switches.
  • Glass break detectors.
  • Gas detectors.
  • Smoke detectors.


The circuit is based on the "Security Sensors" project in the book "Practical Arduino".

Open Source: Yes, OSHW-compliant
License: TAPR Open Hardware License
Source: github.com/freetronics/SecuritySensor...
AREF
GND
D13 / SCK
D12 / MISO
RESET D11 / MOSI ~
3.3V D10 / SS ~
5V D9 ~
GND D8
GND
VIN D7
D6 ~
A0D5 ~
A1D4
A2D3 ~
A3D2
A4D1 / TX
A5D0 / RX
Note:
A0: Channel "A" input.
A1: Channel "B" input.
A2: Channel "C" input.
A3: Channel "D" input.
D4: Channel "A" status LED.
D5: Channel "B" status LED.
D6: Channel "C" status LED.
D7: Channel "D" status LED.

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