The ETH Zurich quadcopter folks have added to their already impressive collection of videos of cooperative, autonomous quadcopters doing exciting things (previously) with this video of the adorable little gizmos throwing and catching balls together.
Cooperative Quadrocopter Ball Throwing and Catching - IDSC - ETH Zurich
To toss the ball, the quadrocopters accelerate rapidly outward to stretch the net tight between them and launch the ball up. Notice in the video that the quadrocopters are then pulled forcefully inward by the tension in the elastic net, and must rapidly stabilize in order to avoid a collision. Once recovered, the quadrotors cooperatively position the net below the ball in order to catch it.
Because they are coupled to each other by the net, the quadrocopters experience complex forces that push the vehicles to the limits of their dynamic capabilities
Peter Biddle writes, “I get I myself into trouble. I don’t claim that bad stuff happens to me more often than others – it’s more that I find more ways to happen to bad stuff. I actually found a way to get severe hypothermia in 105°F heat.”
Lisa Gold is the extraordinary researcher who is perhaps best know for her work with Neal Stephenson, particularly on the Baroque Trilogy.
Dungeons and Dragons Beyond is an official digital companion to D&D, with a free character-generator and a bunch of paid additions, from access to hyperlinked editions of the rulebooks ($30/each), and a $3/player, $6/DM subscription service that lets DMs share their books with players.
Toaster ovens are the perfect appliance for small things like toasted sandwiches and roasted garlic (try it!), but anything more involved usually requires a full-sized conventional oven.However, despite its small size, the Wolfgang Puck Pressure Oven can handle anything from baked pastries to broiled meats. This kitchen appliance has a minimal countertop footprint, and cooks […]
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