You’ll just have to remember not to outdrive the lidar. Note that the RPLidar A2 does not provide the performance of a Hokuyo UST-10LX lidar like on the MIT configuration of RACECAR/J, but it is around $1300 less than the Hokuyo! If you are looking at exploring lidar in a an application like a rover or other vehicle on a budget, this is a good way to go. In the video, we mount the RPLidar A2 on a RACECAR/J FlatNose. The RPLidar A3 can come pretty close at 20Hz. To go faster than that (and not outdrive the lidar), you probably will need greater than ~25Hz scan rates. These specifications are also just about right for most slower moving robots, let’s say less than 10-15 miles per hour. The range is ~ 4-5 meters outdoors and ~14 meters indoors (much more than the claimed range of 6m).Īll in all, that’s way swell for the price point. The RPLidar A2 has a scan rate of up to 15Hz, providing 4000 samples/second. The plane is determined by the orientation of the sensor. This is a ‘2D’ lidar in that it can measure multiple points on a given plane. Then it does some maths, and calculates the distance to the object. Because the receiver knows when the light was emitted, it can measure accurately how long it takes for the light to reflect back from any objects in the lights path.
The laser emits light, the receiver receives the light. The RPLidars work by rotating a laser emitter and receiver. Both the A2 and the A3 have the same footprint, and use the same mounting pattern for attachment. The prices range from ~$320 USD for the A2 to $600 for the A3. Slamtec sells a couple of different versions of the A2, and also sells a more capable A3 version. The RPLidar A2 is a popular low cost 2D LIDAR.
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