Ditch The Tapes, Put An Android In Your Deck

While we here at Hackaday never question why an individual took on a particular project, it surely doesn’t stop our beloved readers from grabbing their pitchforks and demanding such answers in the comments. Perhaps no posts generate more of this sort of furore than the ones which feature old audio gear infused with modern hardware. In almost every case the answer is the same: the person liked the look and feel of vintage hardware, but didn’t want to be limited to antiquated media.

That sentiment is perhaps perfectly personified by the TapeLess Deck Project, created by [Artur Młynarz]. His creations combine vintage cassette decks with an Android phone small enough to fit behind the tape door. An Android application which mimics the look of a playing tape, complete with “hand written” track info, completes the illusion.

The output from the phone is tied into the deck where the audio signal from the tape head would have been, so the volume controls and VU meters still work as expected. Watching the meters bounce around while the animated “tape” plays on the screen really does look incredibly slick, though the effect is somewhat hindered by the fact the physical playback controls don’t seem to be implemented. Incidentally, the whole experience works better if the plastic window on the tape door is removed; that way you can utilize the touch and swipe interface [Artur] has in the software.

We’ve seen previous attempts to modernize the audio cassette experience, but they’ve tended to be more of a novelty than anything. But these decks are nice enough that you can like them non-ironically. Though if we’re talking about portable tape players, there’s only room for one in our cold mechanical hearts.

[Thanks to Nikolai for the tip]

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RoMeLa's ALPHRED - quadruped robot

RoMeLa’s Sideways Walking Robot Has Evolved More Limbs

Despite the success shown in prototypes from groups like Boston Dynamics, bipedal walking is still really hard to implement. When the robot lifts one leg, it has to shift its center of gravity over the other leg to avoid falling sideways.

The Autonomous Legged Personal Helper Robot with Enhanced Dynamics (ALPHRED) is getting around this problem by coming at it from a different angle. ALPHRED walks sideways and throws away the distinction between arms and legs.

The bot is RoMeLa at UCLA’s latest evolution in their approach to traditional bipedal roadblocks. Sideways walking is something we covered when we talked about their previous version, NABi, which had only two legs. ALPHRED expands that to four limbs. As the video below shows, all four limbs can be used for walking using either a wide, stable sprawl or the limbs can reorient to a narrower dog or horse-like stance for faster running.

Beyond walking, one or two of the limbs can be put to use as hands to open a door or hand over a package, which is why they refer to them as limbs instead of legs or hands. Only an animation is shown of that configuration but RoMeLa is a robotics lab which we keep an eye on so we’ll let you know if they demonstrate it.

The video goes on to show a neat actuator with active compliance which they call BEAR, Back-drivable Electromagnetic Actuator for Robots. A search turned up no further details but let us know in the comments if you have any. We also liked seeing how they use a speaker to give a rough idea of the amount of current being drawn. While it’s both practical and a hack, it also adds a nice sci-fi touch.

Continue reading “RoMeLa’s Sideways Walking Robot Has Evolved More Limbs”