Floppy Autoloader Takes The Pain Out Of Archiving 5000 Amiga Disks

floppy-autoloader

Archiving data from old floppy disks can be a tedious process at best. Poorly labeled disks combined with slow transfer speeds put it high on the list of things we would rather not do, and it turns out that [Dweller] was of the same opinion. With an estimated 5,000 floppies in his collection, he finally decided it was time to clean house.

With no idea of what was stored where, he decided the best way to go about the process was to read all of the disks, archiving everything, saving the sorting process for later. He originally started by building a floppy autoloader out of Lego Mindstorm parts, which looked good on paper, but performed pretty poorly.

He came across an old floppy duplicator on eBay and figured that since the machine was built for handling gobs of disks, that it was the perfect base for his autoloader. He pulled the mechanical bits from the machine, incorporating them into the rig you see above. He swapped out the duplicator’s brains for an Arduino, which allows him to batch copy his disks and save a picture of each label with little effort.

He says that the system works great, making his life a lot easier (and less cluttered!)

Check out the video below to see his floppy autoloader in action.

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glue stick linear actuator

Glue Stick + Servo = Linear Actuator

What do you get when you cross a glue stick with a hobby servo motor? A linear actuator, of course! Although this could be done with other household implements, the form factor of this glue stick seems perfectly suited to sit on top of a servo horn.

The servo, as you might have guessed, has to be converted to rotate fully instead of the 180 degrees or so that is typical of these types of motors. The trick to this, and what really makes it shine in our eyes, is that instead of attaching two resistors in a normal continuous rotation mod, the potentiometer is used on the glue stick allowing for position feedback.

The resulting force from this gear-reduced actuator is quite impressive, giving an “err” (over 3 Kilograms) on the scale used for testing. [Gareth] or [Chiprobot] gives a great tutorial of how to make one of these after the break, but if you’d rather just see it in action, skip to around 8:20! Continue reading “Glue Stick + Servo = Linear Actuator”

[Aaron] Shows Us What Life Would Be Like If [Bob Vila] Started Hacking Headphones

construction-headphones

[Aaron Horeth] had a pair of headphones that had seen better days, and before he tossed them out, he realized that he could use them to build a set of custom cans. He had always wanted a pair of headphones with a detachable cord to prevent damage when tripped over, and thought that his old set would be the perfect donor.

He swung by his local hardware store to peruse their collection of construction earmuffs, eventually finding a set that looked decent and didn’t cost an arm and a leg. Using construction earmuffs as the framework for his headphones gave him the durability he was looking for with the added bonus of being designed to deaden extraneous noise. Once he got them home he pulled the drivers from his old set of headphones installing them into the earmuffs, but not before he wired them up to support a breakaway input cable.

There’s no doubt that the modifications are simple, but we imagine they come in pretty handy when tinkering around the shop.

Antique Electromechanical Calculating Machines

electromechanical calculator Hamann 505

The decision to use electronics for our calculating machines has long been decided.  However, that doesn’t mean that mechanical engineers didn’t put up a valiant, if ultimately futile, fight. [Dvice.com] has an interesting article comparing the calculating technology of the 1960s, such as the [Haman 505], to today’s iPad.

This comparison and pictures were made possible by [Mark Glusker]’s excellent collection.  These models can be divided into two categories, rotary calculators, and printing calculators. According to [Mark]‘s site, the printing calculators stayed on the market a few years after the rotary calculators, which were off the market by 1970.

Although we may never see machines like these made again, anyone even a little bit mechanically inclined would be hard pressed not to be inspired by this collection. Be sure to check out the video of a [Madas 20BTG] calculator after the break to see what one of the rotary models looks like in action! Continue reading “Antique Electromechanical Calculating Machines”

Cardboard Framed Tricopter

Talk about reducing the costs of a build, this tricopter uses cardboard as a frame and has one less motor than its quadcopter relatives. There are almost no details other than those shared in the video after the break so we’re just going to guess based on what we see (feel free to share your own insight in the comments).

The smooth curves of this integrated landing pad makes us thing the frame was cut either with a CNC device or a utility-knife wielding ninja. Two of the three motor supports look just like what is shown above, but the third has a hinged mounting bracket attached to a servo motor. This way the propeller can be tilted around an axis running parallel to the support arm. We’d bet this feature is mainly for adjusting the yaw of the aircraft.

The video comments mention that this can hover when the throttle is at 45%, showing that there’s a lot lift available when needed. That is until you really weigh it down by adding plastic cages around the propellers. It’s kind of neat to see the thing ‘sticking’ to the ceiling at the end of that clip by driving the throttle wide open and using the cages as top-sided landing gear.

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Electric Poncho Keeps You Warm On The Go

electric-poncho

With the mild winter and spring we have had, it might seem strange to think about ways to keep yourself warm, but there’s no better time than the present to prepare for chilly weather down the line.

In his blog [Berto] was thinking about how to keep warm when things cool off again, and decided that a heated poncho would be great to have on hand. He found a dead simple way to craft his heated poncho, requiring little more than a bit of wiring, some thread and cloth, as well as a pair of scissors.

[Berto] picked up a 12V-powered electric blanked, then proceeded to cut a head-sized slit in the middle of it, avoiding the heating coils. He sewed a bit of cloth around the hole to ensure it didn’t end up ripping over time, then he wired the blanket up to a 12V battery he tucked away in his backpack.

The result is a variable-temp poncho that you can use to keep warm in a variety of situations. [Alan Parekh] from Hacked Gadgets says that he thinks the poncho would be awesome on a full-day snowmobiling trip, and we think he’s right!

Continue reading to see a short video where [Berto] explains how to put one of these heated ponchos together.

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