How to Maintain and Fix Sliding Doors The two types of doors that are easiest to open don’t have hinges at all; instead, they slide on tracks. Sliding-glass doors are a popular feature in rooms with decks or patios because their full-length glass panels open the room visually to the great outdoors while providing easy access to the outside. Interior sliding doors are frequently used for closets and pantries, and sometimes to conceal water heaters and furnaces. You can remove sliding-door panels easily to gain complete access to what’s behind them. Follow simple repairs and maintenance procedures to keep your sliding doors on track. Patio doors slide horizontally — or at least they’re supposed to. All too often, these big, pesky contraptions stubbornly resist opening, and getting outside becomes about as easy as dragging a refrigerator through a sandbox. The most common cause of a sticking patio door is debris in the lower track. This channel easily becomes clogged with dirt and leaves because people and pets walk over it whenever they go in or out.

Each time you vacuum your floors, use a small brush attachment or cordless vacuum to clean the sliding-door tracks. Apply a lubricant to both upper and lower tracks to keep the door hardware clean and operating freely. In addition to cleaning and lubricating sliding-door tracks, you want to lubricate the door lock. The best way to lubricate any lock is to disassemble it and use an aerosol lubricant to flush away grime and coat the moving parts of the lock. Sometimes, patio doors become hard to open even when the track is clean. In these cases, the problem is usually that the rollers at the bottom of the door have started to rub against the track. The rollers at the top can also wear down, lowering the bottom of the door so that it rubs on the track. Most sliding doors have a mechanism called an adjusting screw located at the bottom of the door ends. Turning this screw raises or lowers the roller. Give the screw a clockwise turn and test to see whether the door slides easier.

If the door becomes even harder to open, turn the screw in the opposite direction. After a bit of adjustment, the door should roll easily without rubbing on the bottom track. Sliding closet doors operate on rollers that are positioned in tracks at the top jamb and floor, allowing the doors to bypass each other in the tracks. Because sliding doors don’t fold out the way bifold doors do, they allow access to only half the width of the opening at a time. To clean and lubricate the hardware of a sliding closet door, use a stiff brush, a toothbrush, or a hand vacuum to clean dust from the tracks. Use an aerosol lubricant to lubricate all the door rollers. If the rollers are damaged, install replacement rollers (available at home centers). If the door doesn’t hang level, leaving an uneven gap between the door and door frame, look for an adjustable mounting screw at the inside top of each door. Use a screwdriver to adjust the mounting screw and even out the door.Group entry hacks are a favorite for hacker social groups.

Why use old fashioned keys when you can use newfangled electronic keys? If you are looking to build a simple RFID-based security system to secure your important stuff, this project from Resin.io is a good place to start. garage door openers by chamberlainIn it, [Joe Roberts] outlines the process of building a simple RFID-triggered mechanism for their office door.chi garage doors careers It’s a pretty simple setup that is composed of an RFID reader, a Rasperry Pi and a Neopixel ring. car window repair cutler bayWhen someone places an RFID card against the reader hidden behind a poster by their front door, the reader grabs the code and the Pi compares it with a list of authorized users. sliding patio doors toronto

If the card is on the list, the Pi triggers the door lock using a signal line originally designed to work with an intercom system. If the user isn’t on the list, a laser is triggered that vaporizes the interloper… well, that’s perhaps in the next version, along with an API that will allow someone to open the door from the company chat application. At the moment, this is a clean, simple build that uses only a few cheap components, but which could be the basis for a more sophisticated security system in the future. If you’ve been to an apartment complex with a locked front door, you’ve seen the buzzer systems. You press the corresponding button for the apartment you want and can talk to the resident. They can press a button to unlock the door briefly, and then you go up to their apartment and they don’t have to come down to let you in. But what if you’re the resident and you want to go for a run without your keys jingling in your pocket? What if you want to open it using just your smartphone?

I knew this was a silly problem, and everyone I told about it thought that for the amount of time and effort it might save, it was hardly worth it. How fast can I put this together using only parts I have around the apartment? Turns out about 2 hours. [James] works from home. His office is filled with objects that can be described with adjectives such as, “expensive,” and, “breakable.” His home, however, is filled with professional object-breakers known as children. To keep these two worlds from colliding, he installed a keypad lock on his office door. The potential side-effect of accidentally training his children to be master safe-crackers aside, the system seems to work so far. However, being a hacker, the tedium of entering a passcode soon grew too heavy for him. Refusing to be a techno-peasant, he set out to improve his lock. The first step was to reverse engineer the device. The lock is divided into two halves, one has a keypad and handle, the other actually operates the lock mechanism.

They are connected with a few wires. He hooked an oscilloscope to the most likely looking candidates, and looked at the data. It was puzzling at first, until he realized one was a wake-up signal, and the other was the data. He then hooked the wires up to a Bluetooth-enabled Arduino, and pressed buttons until he had all the serial commands the door lock used. After that it was a software game. He wrote code for his phone and the Arduino to try out different techniques and work out bugs. Once he had that sorted, he polished the app and code until he reached his goal. All of the code is available on his GitHub. Finally, through his own hands, he elevated himself from techno-peasant to wizard. He need but wave his pocket oracle over the magic box in front of his wizard’s lair, and he will be permitted entry. His wizardly trinkets secure from the resident orcs, until they too begin their study of magic. In the dark ages, you had to use a key to lock and unlock your car doors.

Just about every car now has a remote control on the key that lets you unlock or lock with the push of a button. But many modern cars don’t even need that. They sense the key on your person and usually use a button to do the lock or unlock function. That button does nothing if the key isn’t nearby. [Pierre Charlier] wanted that easy locking and unlocking, so he refitted his car with a Keyduino to allow entry with an NFC ring. What results is a very cool fistbump which convinces your car to unlock the door. Keyduinio is [Pierre’s] NFC-enabled project, but you can also use a more conventional Arduino with an NFC and relay shield. The demo also works with a smartphone if you’re not one for wearing an NFC ring. Going this round, he even shows how to make it work with Bluetooth Low Energy (BLE). There are a myriad of modern ways to lock and unlock doors. Keypads, Fingerprint scanners, smart card readers, to name just a few. Quite often, adding any of these methods to an old door may require replacing the existing locking mechanism.

Donning his Bollé sunglasses allowed [Dheera] to come up with a slightly novel idea to unlock doors without having to change his door latch. Using simple, off the shelf hardware, a Smartwatch, some code crunching and a Google Now app, he was able to yell “OK Google, Open Sesame” at his Android Wear smartwatch to get his apartment  door to open up. The hardware, in his own words, is trivial. An Arduino, an HC-05 bluetooth module and a servo. The servo is attached to his door latch using simple hardware that looks sourced from the closest hardware store. The code is split in to two parts. The HC-05 listens for a trigger signal, and informs the Arduino over serial. The Arduino in turn activates the servo to open the door. The other part is the Google Now app. Do note that the code, as he clearly points out, is “barebones”. If you really want to implement this technique, it would be wise to add in authentication to prevent all and sundry from opening up your apartment door and stealing your precious funky Sunglasses.

Watch a video of how he put it all together after the break. And if you’re interested, here are a few other door lock hacks we’ve featured in the past. Here’s a cool little variation of that handy little function called Wake on LAN — [Jonathan] found himself locked out of his apartment one too many times, so he decided to add his own fail safe backup in order to get inside without a key — using a Raspberry Pi of course. His apartment is one of those older style ones where the door is always locked and you use a buzzer to let someone in (or a key to get in yourself). This made it super easy to add some internet connectivity to the system. [Jonathan] tapped into the buzzer with a relay since the system uses medium voltage AC to operate. A Raspberry Pi triggers a transistor using its GPIO to click the relay on and off, effectively controlling the lock. Using a WiFi dongle he’s connected the Pi to his home network and written a simple perl script to trigger the relay — all he has to do is visit a URL on his phone or computer and the door will unlock instantly!

Once the system worked [Jonathan] soldered all the components onto a breadboard and hooked it up. He still needs an enclosure for it, but it’s been working well since he installed it. Another option would be to use an RFID tag system through the door, which could be pretty cool as well. [Shawn] recently overhauled his access control by fitting the doors with some RFID readers. Though the building already had electronic switches in place, unlocking the doors required mashing an aging keypad or pestering someone in an adjacent office to press a button to unlock them for you. [Shawn] tapped into that system by running some wires up into the attic and connecting them to one of two control boxes, each with an ATMega328 inside. Everything functions as you would expect: presenting the right RFID card to the wall-mounted reader sends a signal to the microcontroller, which clicks an accompanying relay that drives the locks. You may recall [Shawn’s] RFID phone tag hack from last month;