Forgot your apartment keys? If you’ve got a ritzy building with a doorman, no problem. If your digs are a little more modest, you might only have an intercom panel that calls up to your apartment so someone can buzz you in. But if nobody is home, you’re out of luck. That’s why [Paweł] spent an hour whipping up an intercom connected automation system pack full of goodies.
The design is pretty simple – an ATMega328P to snoop on the analog phone ringer in the apartment when the intercom call button is pushed, and a relay wired in parallel with the door switch to buzz him in. For added security, the microcontroller detects the pattern of button presses and prevents unwanted guests from accessing the lobby. Things got really fun when [Paweł] added a PCM audio module to play random audio clips through the intercom. As you can see in the video below, an incorrect code might result in a barking dog or a verbal put-down. But [Paweł] earns extra points for including the Super Mario Bros sound clip and for the mashup of the “Imperial March” with “The Girl from Ipanema”.
True, we’ve seen a slightly more polished but less [Mario] version of this project before, but the presentation of this particular hack has us grinning from ear to ear.
Continue reading “Hacked Apartment Intercom Barks at You or Buzzes You In”
Opening a garage door by hand is a lot of work and a hassle, hence the advent of the garage door opener. Nowadays, some people may even say just pushing the button of a remote control requires too much effort. [nodcah] is one of those people so he came up with a fingerprint scanner that controls a pre-installed garage door opener. All kidding aside, it is a cool project that lets you into your garaage, keeps unknown people out and doesn’t require you to remember to carry a key or remote.
In the center of this project is an ATmega328 that runs a custom Arduino code. This ATmega328 is responsible for controlling a 16 character, 2 line LCD screen as well as communicate with an off the shelf fingerprint scanner from Sparkfun. The fingerprint scanner has a built in CPU, can store up to 20 fingerprints and does all its own processing of fingerprint scans. It then communicates to the ATmega328 with simple commands over serial Tx and Rx lines.
The ATmega328, LCD and fingerprint scanner are all mounted outside the garage in a 3D printed enclosure. If the wires for the internal-garage open/close button were just run straight into this outdoor module, anyone could open it up, short the wires and get into the garage. To prevent this, if the ATmega328 gets the ‘OK’ from the fingerprint scanner, then it sends a signal to an ATtiny85 that is inside the garage. If the ATtiny85 receives the correct signal, it will then actuate the garage door opener by shorting the open/close button contacts. This prevents anyone from sneaking into the garage.
[nodcah] did a great service to the community by making all of the part list, schematics, instructions and Arduino code available so anyone can easily put this project together.
Continue reading “Fingerprint Scanner Both Simplifies And Complicates Opening Garage Door”
Home automation keeps popping up here at Hackaday, so [Cristian Zatonyl] decided to share his Raspberry Pi-based system with us. This build takes a firm stance on the “automated” side of the automation vs. control debate we had last week: no user input necessary. Instead, [Cristian] relies on geofencing to detect whether he has driven outside the set radius and automatically turns off the lights and locks his door.
The build takes advantage of Z-Wave products, which are your typical wireless remote-control gadgets, but tacks on a third-party “RaZberry” board to a Raspi to give it control over off-the-shelf Z-wave devices. The final step is the integration of a custom iOS app that keeps tabs on the geofence boundaries and signals the Pi to control the lights and the front door lock.
[Cristian’s] tutorial covers the basics and admits that it’s a proof of concept without any security features. Judging by his other YouTube videos, however, we’re sure more developments are underway. Check out the video below for a demonstration of the system, then feel free to speculate on security concerns in the comments. Our article on Z-wave security from a few years ago might be a good starting point.
Continue reading “Raspi Z-Wave Automation is Automated”
When a school bus has finished its life ferrying children around, it often ends up as someone’s pet project. Most buses in the US, however, have annoying back doors that lock only from the inside, which isn’t very convenient if you’re loading/unloading gear. Drawing inspiration from another project that fit a simple deadbolt upgrade, [Leonard] took the build one step further and hacked together his own keyless entry deadbolt system.
He started by removing the white safety bar that normally covers the long red handle and attached a slide bolt to the door. The slide bolt serves only as an extension for the deadbolt, which would otherwise get whacked by the red handle. [Leonard] made a few modifications to the slide bolt so it can sit flush against the bus’s lock bar, then went to work attaching the keyless deadbolt. At 2.5″, the bus’s door is actually thicker than standard doors, not to mention this build needs the deadbolt to move along the door’s surface to push the slide bolt fitted to the door. [Leonard] decided to throw in a chunk of wood as a kind of “simulated door,” which mounts next to the slide bolt and houses the deadbolt’s guts.
Check out the video after the break to make sense of the door’s operation and swing by [Leonard’s] blog to see what else he’s done to the bus. If you’re in the mood for more transportation hacks, make sure you see the Raspberry Pi CarPC.
Continue reading “School Bus Keyless Door Lock Conversion”
Modern smart keys allow you to keep the key fob in your pocket or purse while you simply grab the handle and tug the door open. [Phil] decided he would rather ditch the fob altogether and instead implemented a passive Bluetooth keyless entry system with his Android phone. It’s probably unlikely for car manufacturers to embrace phone-based keys anytime soon, and [Phil] acknowledges that his prototype poses a landslide of challenges. What he’s built, however, looks rather enticing. If the car and phone are paired via Bluetooth, the doors unlock. Walk out of range and the car automatically locks when the connection drops.
His build uses an Arduino Mega with a BlueSMiRF Silver Bluetooth board that actively searches for his phone and initiates a connection if in range. Doors are unlocked directly through a 2-channel relay module, and an LED indicator inside the vehicle tells the status of the system. A pulsing light indicates it’s searching for the phone, while a solid ring means that a connection is established.
We hope [Phil] will implement additional features so we can make our pockets a bit lighter. Watch a video demonstration of his prototype after the break, then check out the flood of car-related hacks we’ve featured around here recently: the OpenXC interface that adds a smart brake light, or the Motobrain, which gives you Bluetooth control over auxiliary electrical systems.
Continue reading “Passive Bluetooth keyless entry system”
[EdsJunk] loves the outdoors and using his Jeep Wrangler to get him there, but hiding a key just to go for a swim makes him nervous. After a friend showed him how convenient it was to have keypad entry to his vehicle, [EdsJunk] decided it was time he built his own.
The build uses a spare waterproof keypad attached to an Arduino Micro. [EdsJunk] simplified things by cannibalizing his extra keyless entry keyfob; if the ‘duino receives the right code from the keypad, it presses the unlock button on the keyfob to grant access. [EdsJunk] admits that the Wrangler’s soft top is easy enough to get into, but explains that the goal of this project is to keep the alarm activated, which would presumably go off if someone tried to break in through the soft top. You can watch a video demo of the keypad access below. This is another great addition to the multitude of hacks he’s performed on one vehicle.
We do, however, hope that there’s some kind of lockout built into the code to prevent brute forcing: it should be easy enough to activate the car’s panic button after a set number of failed attempts. Car hacks are popular this summer: check out the Real Car Remote Control if you missed it.
Continue reading “Custom car keypad entry”
A new attack on automotive keyless entry systems is making headlines and we want to know how you think it’s being done. The Today Show reports that vehicles of different makes and models are being broken into using keyless entry on the passenger’s side of the car. It sounds like thieves steal items found inside rather than the vehicles themselves which makes these crimes distinctly different from the keyless ignition thefts of a year ago.
So how are they doing this? Here are the clues: The thieves have been filmed entering only the passenger side of the car. They hold a small device in their hand to unlock the doors and disable the alarm. And there is evidence that it doesn’t work on 100% of vehicles they try. Could it be some hidden manufacturer code reset? Has an encryption algorithm been hacked to sniff the keyfob identifier at a previous time? Or do you think we’re completely off track? Let us know your opinion by leaving a comment.