POLOLU-1419 Pololu

Zumo Reflectance Sensor Array Zumo reflectance sensor array with labeled sensors and dimensions. Overview The Zumo reflectance sensor array provides an easy way to add line sensing or edge detection to a Zumo robot. It features six separate reflectance sensors, each consisting of an IR emitter coupled with a phototransistor that responds based on how much emitter light is reflected back to it. The two outside sensors are positioned at the very edges of the module to maximize their usefulness as edge detectors (e.g. for seeing the white edge of a sumo ring) while the four inner sensors are closer together for better detecting lines. This sensor is included with the assembled version of the Zumo robot, but not with the kit version. The sensor array plugs into the front expansion header of the Zumo shield, which provides it with power and the necessary I/O connections. The default I/O connections are to pins that are otherwise unused by the Zumo shield, but the sensor module makes it possible to remap these pins or disconnect specific sensors altogether to free up I/O lines. Please see the Zumo Shield users guide for detailed information about assembly and use with the Zumo robot. Zumo reflectance sensor array on a Zumo Zumo reflectance sensor array on a Zumo robot. robot, bottom view. Included components The Zumo reflectance sensor array ships with all of the components you need to connect it to a Zumo shield:Zumo reflectance sensor array assembled with included male header pins. The short ends of the extended 212 male header strip should be soldered to the board as shown above (with the solder joints made on the component side of the array). The included 212 female header should be soldered to the front expansion area of the Zumo shield as described in the Zumo shield users guide. The array also ships with two 13 male headers: a straight version and a right-angle version. You can optionally solder the 13 header of your choice to the set of three holes along the edge of the board and use the included shorting block to connect the appropriate I/O line to the LEDON pin for dynamic control of the IR emitters (note: it is generally easier to install the 3-pin header before the larger 24-pin header). If you are content just having the IR emitters on all the time, you can skip installation of the 13 header. The assembled picture above shows the right-angle header installed. How it works