In addition to being something fun to do with an oscilloscope, this could be a valuable time-saver for anyone looking to tap into the wired communications on a garage door opener. If you own an older model you might be scratching your head. But newer units have more than just one button operation, usually extending to at least two extra buttons that control the lights on the motor unit and lock out wireless control. A quick probing turned up the communication scheme used by the button unit mounted next to the door into the house.
We’ve patched into our own garage door using a simple relay to interface with a microcontroller which will still work for opening and closing the door But if you’re looking for extended control you need to spoof one of the timing signals detailed in this post. We like the stated examples for future hacks: building a better wired button unit, or adding some type of RFID integration. We could see this approach for hacking in motion light control for door openers that don’t have it.
Normally, internet-controlled household devices are a cobbled together mashup of parts. This is great for a prototype, but if you’re looking for something that will last a decade in your garage, you’ll need something a little cleaner and more robust. [Phil]’s Internet-enabled garage door opener is just that, replete with a custom-made enclosure for his Arduino powered system.
The main hardware for [Phil]’s build is a Freetronix EtherTen, an Arduino clone with a built-in Ethernet interface. Aside from that, the electronics are simple: a relay, transistor, and diode provide the connection from the EtherTen to the garage door opener.
The software for this setup consists of a main file that sets up the web page, the serial monitor, and loops through the main program. There are a bunch of classes for initializing the web page, writing passwords to the EEPROM, activating the door, and setting the MAC and IP addresses.
Opening the door with this remote is a snap: with any WiFi enabled smartphone or tablet, [Phil] only needs to log onto his network, surf on over to the page hosted on the Arduino, and enter a password. From there, opening the door is just a press of a button. Passwords and other configuration settings cane be entered with MegunoLink. This software also includes a serial monitor to log who opened the door and when.
It’s an interesting and compact system, and handy to boot. You might sometimes forget your garage door opener, but we’re thinking if you ever find yourself without your phone, a closed garage door is the least of your problems.
The round-about way this iPhone garage door opener was put together borders on Rube Goldberg. But it does indeed get the job done so who are we to judge? Plus you have to consider that the Apple products aren’t quite as hacker friendly as, say, Android phones — so this may have been the easiest non-Jailbreak way.
The main components that went into it are the iPhone, a Wemo WiFi outlet, and a 110V rated mechanical relay. But wait, surely it can’t be that simple? You’re correct, just for added subterfuge [Tall-drinks] rolled IFTTT into the mix.
You may remember hearing about If This Then That from the Alert Tube project. It’s a web-based natural language scripting service. Throw everything together and it works like this: The iPhone sends a text message which IFTTT converts to a Wemo command. A power cord connects the Wemo outlet to the 110V electrodes on the relay. The normally open connection of the relay is attached to the same screw terminals of the garage door opener as the push button that operates it. When the relay closes, the garage door goes up or down.
The biggest problem we have with this is the inability to know if your garage door is open or closed.
We figure we have to start off this week’s links post talking about PETMAN. Boston Dynamics shows off the humanoid robot donning a full chemical suit. It’s a lot scarier than when we first saw it as a couple of legs a few years ago [Thanks Joshua].
Seeing something like that might drive you back to smoking cigarettes. But since that’s pretty bad for your health perhaps you just need a mechanical chain-smoking machine to take the edge off. That thing can really suck ’em down! [Thanks Mike]
Last week’s links included a bit about the Raspberry Pi 2.0 board version’s reset header. [Brian] wrote in to share a link for adding reset to a 1.0 revision board.
Speaking of RPi, [Elvis Impersonator] is using it to automate his garage door with the help of Siri.
In shop news, [Brad] needed to sharpen a few hundred pencils quickly and ended up melting the gears on his electric sharpener. Transplanting the parts to his drill press gave him more power to get the job done in about six minutes.
And finally, you can forget how to decipher those SMD resistor codes. Looks like surface mount resistors might be unmarked like their capacitor brethren. We were tipped off by [Lindsey] who got the news by way of [Dangerous Prototypes and Electronics Lab]
[Lou Prado] sent in a link to his new video on using a Bluetooth headset as a garage door opener for your Android device. This isn’t a new hack, and we’ve actually seen him pull it off once before back in 2011. But we’re running this as an update for a couple of reasons. First off, we had forgotten about the hack and it’s worth revisiting. Secondly, the headset which he used with the initial hack has gone out of production. He chose a new model, and the assembly video (embedded after the break) which he made is a treasure trove of best practices to use when hacking consumer electronics.
Here’s how the hardware part of the hack goes. He removes the speaker from the headset and solders the base of a transistor in-line with a resistor to the red wire. The emitter connects to the grounded frame of the USB charging cable which is plugged into an outlet next to your garage door opener. The collector of the transistor is then connected to the garage door opener, along with a common ground connection, allowing audio from the headset to trigger the transistor to open the door.
The systems is secure based on Bluetooth pairing, which was done with his phone before starting the hardware hack.
Continue reading “Bluetooth headset garage door opener update”
[Andy] is taking the complexity of a smartphone-controlled garage door down a notch with this project. He’s not interested in checking on the state of the door (open or closed) using a video feed, or in controlling the thing from anywhere in the world. He just wants to use his Android as the remote control and we say amen to that.
The circuitry in the garage is pretty simple. A relay is used to simulate a button press on the in-garage wired opener. This relay is driven by an Arduino which uses a Bluetooth shield for connectivity. Since his Android phone has a Bluetooth modem the rest of the project is just app development. As you can see in the video, the app automatically connects to the Arduino when it is launched, then waits for the button press to send the electronic equivalent of ‘Open Sesame”.
The project covers a series of posts so if you want to see how he got the app up and running make sure to browse through his archives. The next iteration for this app needs to be a background widget that enables Bluetooth, connects to the Arduino, and send s the open command all with one press.
Continue reading “A much easier take on an Android garage door opener”
Last year, [Mark Simonelli’s] wife asked him if he could design something that would allow her to remotely check if their garage door had been left open. [Mark] jumped at the chance to tinker with electronics and designed a system around an old TrendNet IP camera. When remotely connected to the camera using IP Cam Viewer Pro for his Android phone, [Mark] could watch the video stream and also trigger the garage door opener via a small relay circuit he built.
His remote opener worked well, but his camera unfortunately lacked any sort of IR vision/low light capabilities. Since his camera wasn’t very useful in the dark, he decided that he needed to add some way to trigger a light when remotely monitoring his garage. He figured the best way to do this would be to control a power strip-connected light using a circuit similar to the one he built to open the garage door itself.
He stopped by the hardware store and picked up a cheap power strip, disassembling it and removing the power toggle once he got home. He fitted it with a small 5v relay, which he connected to the camera’s terminal block. While he admits that it might not be the absolute safest solution, he can easily control both the light and the garage door with a simple swipe of his phone’s screen.
Continue reading to see his remote controlled power strip in action, and be sure to swing by his site to see more details about his camera-controlled garage door opener.
Continue reading “Monitoring and controlling your garage door from afar with an IP camera”