Blackboard device capable of automatically erasing characters

Abstract

The invention relates to a blackboard device capable of automatically erasing characters. According to the blackboard device, a microcontroller msp430g2553 is used as the control core. Two motors are arranged on a blackboard in the horizontal direction and the vertical direction respectively and are used for controlling a blackboard brush to move horizontally or vertically. The motors are L298N motors. The motors are provided with control buttons which are used for controlling the two motors to move up and down, and left and right respectively. An up-down motor shaft and a left-right motor shaft are connected with conveyor belts, and the conveyor belts are provided with magnetic bars in a fixed mode. The bottom of the blackboard brush is provided with magnetic bars, so traces can be eliminated. According to the blackboard device, the control buttons are used for controlling the motors to rotate, and simultaneously the motors rotate to drive the magnetic bars fixed to the conveyor belt to move up and down and left and right on the reverse side of the blackboard to erase the written characters. In this way, extra physical exertion of teachers is avoided, and the blackboard device is free of dust pollution completely, so the blackboard device accords with environment-friendly innovative ideas nowadays, guarantees body health of the teachers and also improves the working efficiency of the teachers.

Description

technical field [0001] The invention relates to an automatically rewritable blackboard device, which belongs to the technical field of automation control. Background technique [0002] The 21st century is an era of technology and innovation. For the traditional old-fashioned blackboard, teachers must generate greater friction when writing with chalk to write on it. For some courses that must be taught with traditional teaching, the whole class After class, it will cause a lot of load on the teacher's body. In addition, the problem of dust pollution during erasing and writing has not been solved, and respiratory diseases have become a major problem for teachers. In this regard, it is necessary to adopt suitable devices to improve this situation, so as to better expand the functions of the blackboard, enrich and improve the use effect of the functions of the blackboard, and be more conducive to playing a role. Contents of the invention [0003] The object of the present in...

AI Technical Summary

Problems solved by technology

In addition, the problem of dust pollution during erasing and writing has not been solved, and respiratory diseases have become a major problem for teachers.

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