Hand-held touch blind-guiding instrument
A blind guide and tactile technology, applied in physical therapy, appliances to help people move around, etc., can solve problems such as non-direct and non-intuitive methods
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[0020] The casing ⑥ and the slider ⑤ are made of plastic, and the joints of the two are connected by slide rails to realize sliding, extension and retraction. Ultrasonic ranging sensors ② can be purchased, such as model: URM37 V3.2, SRF05, SRF08, SRF02, or can be manufactured by yourself. The circuit board ③ adopts batch printed circuit board, and the main control chip on it adopts ATMEL @ The company's Atmega8, the relevant circuit is attached figure 2 shown. Servo ④, ESKY is used here @ The company's 9g (gram) steering gear. In fact, it can be made smaller, so that the overall volume can also be smaller. Battery ① Use 2 AAA batteries. When in use, hold the blind guide instrument with the part of the ultrasonic distance measuring sensor ② forward, and the palm leans against the slider ⑤. When the finger points to a certain position, the slider ⑤ will move.
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