GSM Remote Control With The TiDiGino

January 6, 2012 by Mike Nathan 4 Comments

tidigino-gsm-remote

If you’re looking to remotely control things around the house, but can’t do it over the Internet or via WiFi, the TiDiGino just might have what you’re looking for. [Boris Landoni] from Open Electronics sent some information on the TiDiGino our way, and it certainly looks like a useful device if you’re in need of a solid GSM remote control module.

At the heart of the TiDiGino lies an ATmega2560, which is normally used in the Arduino Mega, so there’s plenty of processing power to go around. While the form factor differs just a wee bit from what you would expect from an Arduino, the TiDiGino sports all the proper connectivity to support any standard Arduino shield along with the requisite libraries required for use.

Through a contest/community effort, the TiDiGino supports remote alarm, gate control, remote thermostat control, and DTMF remote control functionality right out of the box. We imagine that our readers can dream up a litany of other uses as well, since GSM remote control tends to be pretty popular around here.

Be sure to check out the Open Electronics site if you’re interested in learning more about the TiDiGino – you’ll find a complete BoM along with code and schematics, making it easy to build your own.

OsPID: The Open Source PID Controller

January 5, 2012 by Mike Szczys 19 Comments

Need PID control in your next project? Perhaps this little beauty can help. It’s an Open Source PID controller that also follows the Open Hardware guidelines. [Brett Beauregard] based the project on the newly minted Arduino PID library which he wrote. In the video after the break [Brett] takes apart the device, walking through some of the ways this might be hacked. If you want an overview of every part of this project to-date the best resource is probably his personal blog post.

The front circuit board is the meat and potatoes of the device. It hosts the user interface in the form of buttons, LEDs, and a graphic LCD screen. You can also see the USB mini-b connector which gives you access to the Arduino compatible ATmega328 microcontroller on the back. There is also a piezo buzzer for your alarm needs.

The prototype that [Brett] shows off uses pin connectors to join the main board to the two daughter boards. Unfortunately, the production model moved to dual-sided edge connectors. That’s fine if you you’re using it in its stock condition, but it makes it a bit harder to replace those boards with your own hardware. None-the-less, we love to see great Open Hardware projects brought to market! Continue reading →

Reading NAND Flash With An Arduino

January 5, 2012 by Brian Benchoff 15 Comments

[HC] took a gander around the Googles and saw a number of people trying to read NAND flash chips with an Arduino. It’s an interesting problem; at 16 Megahertz, [HC] is looking at about 60 nanoseconds per instruction cycle, and flash chips normally operate around 20 ns. He got the build working, and was able to read the memory contents and ID of a flash chip.

Right now, it’s just a proof-of-concept to demonstrate that reading flash memory is possible. [HC] used an Arduino Mega to pull the manufacture ID off a flash chip. Because there isn’t exactly a whole lot of storage on an Arduino to hold Megabytes of data, so [HC] is looking for a way to pull data off his flash chip. He’s considering sending it over Ethernet or storing it on an SD card.

This isn’t the first time we’ve seen a roundabout way to use those cheap, ubiquitous NAND flash chips. Considering we’ve got a few dozen of them housed in unused thumb drives, [HC]’s work shows a lot of potential. He posted a topic on his forum to see if there’s any interest in further developments, something we’d like to see.

Securing Your Keurig With RFID

January 4, 2012 by Mike Nathan 42 Comments

keurig-hacking

[Andrew Robinson] and his co-workers are lucky enough to have a Keurig coffee maker in their office, though they have a hard time keeping track of who owes what to the community coffee fund. Since K-Cups are more expensive than bulk coffee, [Andrew] decided that they needed a better way to log everyone’s drinking habits in order to know who needs to cough up the most cash at the end of the month.

He started by tearing down the Keurig B40, making note of the various PCBs inside while identifying the best way to go about hacking the device. The coffee maker is controlled by a PIC, and rather than try to re-engineer things from the bottom up, he left the core of the machine intact and focused on the control panel instead.

He disconnected all of the unit’s buttons from the control board, routing them through an Arduino before reconnecting them to the machine. This essentially rendered the machine inoperable unless triggered by the Arduino, giving [Andrew] control over the brewing process. He wired in an RFID reader from SparkFun, then got busy coding his security/inventory system. Now, when someone wants coffee, they merely need to swipe their office access card over the machine, which enables the use of its control panel.

As you can see in the video below the system seems to work well. If we were to offer some constructive criticism, we would suggest ditching the laptop and rolling the RFID reading/verification into the Arduino instead – other than that, we think it’s great.

Continue reading “Securing Your Keurig With RFID” →

Zombie [Jackson] Bot Dances To Thriller

December 31, 2011 by Mike Szczys 2 Comments

[Marc Cryan] built this little bugger which he calls Wendell the Robot. But what good is an animatronic piece like this unless you do something fun with it? That’s why you can catch the movements matching [Michael Jackson’s] choreography from the music video Thriller in the clip after the break.

This is a ground-up build for [Marc]. He started by designing templates for each of the wood parts using Inkscape. After printing them out, he glued each to a piece of 1/4″ plywood and cut along the lines using a band saw. We don’t have a lot of adhesive spray experience, but he mentions that the can should have directions for temporary adhesion so that the template can be removed after cutting.

During assembly he makes sure to add servo horns for easy connection when adding the motors. All together he’s using five; two for the wheels, two for the arms, and one for the neck. A protoboard shield makes it easy to connect them to the Arduino which is used as a controller.

Continue reading “Zombie [Jackson] Bot Dances To Thriller” →

Build Your Own Mini Ball Drop For New Year’s Eve

December 30, 2011 by Mike Nathan 6 Comments

[Dino] wanted to make this New Year’s celebration a bit more interesting, but he can’t make it to New York for the ball drop. Instead, he decided to make his own mini display in his workshop. Obviously he’s working with a slightly smaller budget than the folks at Times Square, but we think his display is pretty neat. If anything, [Dino] can at least guarantee that his New Year’s is 100% Seacrest-free.

The ball drop is made up of five ping pong balls, each backlit by a 10mm LED. The LEDs and ping pong balls were mounted on the electron gun from a broken oscilloscope, giving it a cool look. The balls are lit one at a time by an Arduino, which illuminates each one for 15 seconds while the final minute of 2011 is counted down. Once midnight hits, a flashing “2012” sign illuminates while Auld Lang Syne plays from a tiny speaker.

The musical part of this build is something that [Dino] spent a lot of time on. He thoroughly explains how he translated the song from sheet music into its digital form, a process that would be helpful for beginners to watch.

Continue reading to see how the display was built, and if you’re just antsy to see the ball drop in action, a short demo can be found at 12:13.

Continue reading “Build Your Own Mini Ball Drop For New Year’s Eve” →

One Way To Reuse Your Christmas Lights Post-holiday

December 25, 2011 by Mike Szczys 7 Comments

[Andrew] shows us one way to reuse all those strands of Christmas lights you used for decoration this year. He had a friend that was helping with stage props for a local musical and ended up using his skills to build a lighted sign with some animation capabilities.

The original plan was to cut out letters for a sign by hand and ring them with white Christmas lights. It is possible to hand cut parts reasonably well, but [Andrew] knew he could get a much better result in less time using a CNC ShopBot to make them. He didn’t know the spacing for the lights so waited and drilled holes for them by hand. Each strand is connected to a relay, then driven by an Arduino. They turned out great as you can see in the clip after the break.

This is a timely hack, because it uses plain old while incandescent bulb strands which will be going on sale in the next few days. Usually you can get them on clearance for a dollar or less so plan ahead and hit the big box store early. Continue reading “One Way To Reuse Your Christmas Lights Post-holiday” →