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Swimming-pool ships make waves in modular robotics (w/ Video)

(Phys.org)—University of Pennsylvania engineering Professor Mark Yim and his students in the Department of Mechanical Engineering and Applied Mechanics have been floating their robotic boats at the university pool after-hours as part of a Defense Advanced Research Projects Agency (DARPA) project. They have received funding from DARPA's Tactically Expandable Maritime Platform. ...

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BeagleBone Cape Design Contest – winners announced

Texas Instruments has announced the winners of the BeagleBone Cape Plug-in Board Design Contest , announced back in November. The three winning submissions are: Replicape for 3D printers; Interacto providing a foundation for building robots and flying drones; and Geiger Cape, which measures radiation counts. ...

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Vibrobelt buzzes cyclist in right direction

Cycle related gadgets are always of interest to Gadget Master, so I was interested to see an article on New Scientist about a "vibrobelt", described as "sat nav for your waist". Basically, it's a belt to help guide cyclists, with actuators indicating the relative direction to take - left, right, and forwards ...

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Current sense circuit collection

Here is a PDF document from Linear Technology, featuring current sense circuits for different applications, including High side, low side, level shifting, high and low voltage, fault sensing, etc: [ via ] Sensing and/or controlling current flow is a fundamental requirement in many electronics systems, and the techniques to do so are as diverse as the applications them-selves. This Application Note compiles ...

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Home-made solder paste stencil

bonybrown.blogspot.gr writes: SMD solder paste stencils are used to accurately “print” a thin layer of solder paste onto a PCB on which the components are placed before reflow soldering. The “printing” is done in a method similar to screen printing, where the solder paste is squeegeed through a 4 mil thick, stainless steel stencil onto the PCB ...

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Re:load: A simple, flexible adjustable dummy load

Re:load is an adjustable constant current load with the following properties: No external power supply required – powered by the device under test Wide range of input voltages, from 3.3 volts to 32 volts Adjustable load from 0 to 3.5 amps Up to 14 watts power dissipation (with design heatsink) Virtually indestructable: The power FET, BTS117, has built in overtemp, ESD, and overcurrent protection Load ...

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