Many applications do not require all six reflectance sensors, and you might want additional I/O lines for other things (e.g. obstacle detectors). In such cases, you can disable specific sensors and free up their associated I/O lines. The array PCB has six pairs of through holes, each of which corresponds to a different sensor. The order of the pairs matches the order of the sensors. When viewing the component side of the PCB, the right hole of each pair connects to an Arduino I/O line and the left hole connects to sensor. There is a single trace on the component side of the PCB between the two holes of each pair, and this trace can be cut to disable the sensor and free up the I/O line. The proper place to cut is marked on the silkscreen by carets. | Many applications do not require all six reflectance sensors, and you might want additional I/O lines for other things (e.g. obstacle detectors). In such cases, you can disable specific sensors and free up their associated I/O lines. The array PCB has six pairs of through holes, each of which corresponds to a different sensor. The order of the pairs matches the order of the sensors. When viewing the component side of the PCB, the right hole of each pair connects to an Arduino I/O line and the left hole connects to sensor. There is a single trace on the component side of the PCB between the two holes of each pair, and this trace can be cut to disable the sensor and free up the I/O line. The proper place to cut is marked on the silkscreen by carets. |