Description: 1.1 profiles three models ranging choice Jumper J1 (short distance, the distance, adjustable from) : Short : about 20cm to 100cm (based on the measured surface materials), the accuracy 1cm; from China : sapling ~ tion about (based on the measured surface materials); adjustable : ranging from adjustable parameters, When appropriate adjustments in the value, about 700cm farthest location; 1.2 Ultrasonic Ranging areas of application modules for the convenience of students in the microcontroller interface specially designed learning modules, it can be convenient and 61 plate connections can be used in small distance range, the robot detection, obstacle detection, and so vehicles can be used to reverse radar and home security systems, applications such as the certification program. 1.3 electric
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