Sneak Thieves Beware: A Pi Watcheth

Ever have that strange feeling that somebody is breaking into your workshop? Well, user [Kenny] has whipped up a tutorial on how to scratch that itch by turning a spare Raspberry Pi you may have kicking around into a security camera system that notifies you at a moment’s notice.

The system works like this: a Raspberry Pi 3 and connected camera module remain vigilant, constantly scanning for motion and recording video. If motion is detected, it immediately snaps and sends a picture to the user’s mobile via PushBullet, then begins recording video. If there is still movement after a few seconds, the process repeats until the area is once again devoid of motion. This also permits a two-way communication with your Pi security system, so you can check in on the live feed whenever you feel the urge.

To get this working for you — assuming that your Pi has been recently updated — setup requires setting up a PushBullet account as well as installing it on your mobile and  linking it with an API. For your Pi, you can go ahead with setting up some Python PushBullet libraries, installing FFmpeg, Pi Camera Notifier, and others. Or, install the ready-to-go image [Kenny] has prepared. He gets into the nitty-gritty of the code in his guide, so check that out or watch the tutorial video after the break.

Continue reading “Sneak Thieves Beware: A Pi Watcheth”

Bacon Beacon

The device featured here is quite simple, but it’s well executed and involves bacon, so what’s not to like!

They take their bacon sandwiches seriously in Dundee. And let us tell you, in Scotland they make good bacon! At the co-working space where [Grant Richmond] works, people were missing out on the chance to order when someone went to the bacon sandwich emporium for a refill.

His solution was the Bacon Beacon, a nicely lasercut box with a series of buttons on top connected to a Particle Photon microcontroller. Press a button, and a node.js web app is called on a server, which in turn sends notifications to the “Fleeple”, the inhabitants of the Fleet Collective co-working space. They can then reply with the details of their order, such as their desired sauce.

The work of sending the notifications is done through Pushbullet, but the code for [Grant]’s side of things can all be found on his GitHub repository. The whole thing was put together in Dundee MakerSpace.

We have something of an affinity for bacon and cured meat products here at Hackaday, we’ve featured more than one bacon-related exploit. The Rabbit Hole hackerspace’s “Push button, receive bacon” cooking system using a laser printer fusing roller for example, an alarm clock that cooks your tasty treat, or a full cooked breakfast using workshop tools.

Please keep them coming, and resolve to make space for a bacon-related hack this year. We promise, it won’t be one of your rasher decisions.

A Cheap DIY Smoke Detector That Can Save Lives

2014-07-19-16.33.53 A faulty wire, a discarded burning cigarette, or a left-on curling iron can trigger sparks of fire to engulf everything nearby until all that’s left is brittle mounds of smoldering ash. Which is why smoke detectors are so important. They are life saving devices that can wake people up sleeping inside, well before the silent, but deadly carbon monoxide starts to kick in. But what happens if no one is home, and the alarm begins to blare? The place burns down into the ground without the owners knowing.

So when [Martin] purchased a battery-powered smoke detector and rigged it up to notify him exactly when the piezo siren is activated, the evolution of the automatic fire alarm continued into the realm of wireless internet-connected things.

His home automation system (a Raspberry Pi running Node-Red) links to a Funky ATTiny84-based sensor and transmits the data wirelessly, redirecting the information to his phone. SMS messages can be sent, as well as emails and pushbullet notifications. Once the piezo siren starts to sing, the system alerts him that smoke has been detected and that he should check on it as soon as possible.

The electronics fit perfectly inside the case waiting for any smoky disturbance in the room to light up. And what makes this project even better, besides the life saving capabilities and the instant push notifications, is that it was hooked up for the cheap. No need to buy a brand-new, expensive Nest protect, when all it takes it a sensor or two and a Raspberry Pi to hack the fire alarm that already sits in the house.

This video coming up after the break shows how simple it is to make. Continue reading “A Cheap DIY Smoke Detector That Can Save Lives”