Wireless Accelerometer Intrusion Detection Nodes



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Here you'll find how to create a wireless intrusion detection node for your home security system. The nodes consist of an accelerometer, a Moteino, a LiPo battery, and a LiPo charger. The nodes are designed to be relatively low-cost and low-power, and can be mounted (with adhesive) to any door or window that you'll like to monitor. The nodes can send messages to a Moteino-based wireless gateway and forwarded on for further processing and integration.

Supplies
Here's your grocery list:
 * 1) Moteino (RFM69W-868/915MHz Transceiver, No Flash) - Low Power Lab, $20
 * 2) MMA8452Q Accelerometer Breakout - Sparkfun, $10
 * 3) LiPo Battery (110mAh) - Sparkfun, $7
 * 4) USB LiPo Charger - Sparkfun, $8
 * 5) ENCLOSURE - TBD, $3

This assumes that you're a hobbyist with some general supplies at hand, such as headers, solder, jumpers, and a FTDI Adapter. Note that, in the future, I'm considering going with the Anarduino, which looks identical to the Moteino, minus $4.

Code Downloads
The Moteino can be programmed in the Arduino IDE (download here). In addition to supplies, you'll also need to download some code libraries for the Moteino and MMA8452Q. Here are the links:
 * RFM69 Github Repo
 * MMA8452Q Github Repo

Initial Hookup
Initially, while we're developing the sensor, it can be powered through the FTDI adapter. This is what it should look like. Here's mine: 