How to try a small laser pointer but not easy to lose?
In today's society, employees in companies and teachers in schools use page-turning laser pointers when they give speeches. It can completely liberate users from the computer, and users don't have to stay by the computer all the time. The laser pointer includes a pen body and a pen tip. The pen body is equipped with laser unit, control unit, RF radio frequency remote control, laser and other modules. The Laser pointer tip part includes a radio frequency receiver and a USB interface. When in use, the pen tip is connected to the computer through the USB interface , Controlled by the buttons on the pen body, no matter where the user is in the classroom or lecture hall, he can turn to any desired screen by simply pressing the page up and down buttons on the page turning laser pointer. superior. It is no longer necessary for the user to stay in front of the stage to operate the computer, and at the same time it saves the trouble of walking back to the stage to change the page. However, in use, the pen body and the pen tip are separated from each other. When the use is over, the user often fails to unplug the USB port of the computer due to negligence, resulting in the loss of the wireless receiver, and the page turning pen will not be able to Normal use.
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A new type of anti-lost page turning laser pointer includes a pen body and a pen tip. The pen body is provided with a microprocessor and a signal transmitter. The microprocessor is connected to the signal transmitter and also includes a timing module, a timing button module, Timing switch module, alarm module, the microprocessor is respectively connected to the timing module, timing key module, timing switch module and alarm module. The alarm module can use a miniature vibrator or buzzer. The buzzer has a good reminder effect. The vibrator can provide silent vibrations to reduce the disturbance to the outside world. For example, during actual speech or class, due to the preset time It is less than the actual class time. If the buzzer sounds at this time, it will obviously affect the class. It is better to use the vibration reminder here. At this time, you can cancel or adjust the timing time through the button module.
2021-10-07 12:13:16
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