Self-driving automobiles are, apparently, the next big thing. This thought is predicated on developments in device vision and cheaper, better sensors. For the device vision part of the equation, Nvidia, Intel, and Google are putting out some interesting bits of hardware. The sensors, though? We’re going to need LIDAR, better distance sensors, much more capable CAN bus dongles, and the equipment to tie it all together.
This is the most affordable LIDAR we’ve ever seen. The RPLIDAR is a new product from Seeed Studios, and it’s an inexpensive LIDAR for everyone. $400 USD gets you one module, and bizarrely $358 USD gets you two modules. Don’t ask questions — this price point was unheard of a mere five years ago.
Basically, this LIDAR unit is a spinning module connected to a motor through a belt. A laser range finder is hidden in the spinny bits and connected to a UART and USB interface through a slip ring. mount this LIDAR unit on a robot, apply power, and the spinny bit does its thing at about 400-500 RPM. The tata that comes out includes distance (in millimeters), bearing (in units of degrees), quality of the measurement, and a start flag once each time the head makes a revolution. If you’ve never converted polar to cartesian coordinates, this is a great place to start.
Although self-driving automobiles and selfie drones are the future, this part is probably unsuitable for any project with sufficient mass or velocity. The scanning range of this LIDAR is only about 6 meters and insufficient for retrofitting a Toyota Camry with synthetic intelligence. That said, this is a cheap LIDAR that opens the door to a lot of experimentation ranging from small robots to recreating that one Radiohead video.