25 Jun '15, 7pm

Build an Early-Warning System for Your Bike

Build an Early-Warning System for Your Bike

In the summer months, I really enjoy riding a bike along some of the flatter roads and trails around my small Vermont town. But sharing some of those roads with cars can be a dicey proposition. There’s one dirt road in particular, where no matter how often I scan my mirror or sneak a look over my shoulder, it seems that sooner or later I get surprised by a car zipping by. I’ve often imagined fitting an ultrasonic sensor to the bike to warn me of incoming traffic, but most of those have a range of less than 10 meters, which is worse than even my mediocre human senses. A lidar—similar to a radar system, but with laser pulses instead of radio waves—would have the longer range I need, but lidars have traditionally been too expensive for my biking needs. This changed last year when startup PulsedLight , of Bend, Ore., announced Lidar-lite, a crowdfunded lidar detector less than...

Full article: http://spectrum.ieee.org/geek-life/hands-on/build-an-earl...

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