Silent desktop fan chip dltap703sd Jericho

 

One 、 The basic composition of the scheme

An encoder An indicator light A stepping motor A fan ;

Two 、 programme Product function

  This one Silent desktop fan programme , The main control chip adopts DLTAP703SD Series touch chip , The package model is 16 Pin SOP, By designing the circuit , The following functions can be realized ：

1、 Turn on the fan by right rotation , When the gear is adjusted to the maximum level, the white light indicator flashes , When you turn right again, the indicator light flashes every time you turn it , surface

It indicates that the adjustment level has reached the top

2、 Adjust the left-hand fan downward to turn off the fan , When the fan is turned off, the indicator light flashes

3、 Short press to turn on the fan and shake your head , Short press again to turn off the fan and shake your head

4、 The fan must be turned on , Shake your head function is effective

5、 Double click to switch to natural wind mode , Double click again to switch to normal mode

6、 Work lights ： Work for a long time , low pressure 3.2V Flash prompt when

7、 low pressure 3V Automatic shutdown when , Plug in after shutdown 5V Power on only after charging activation , The charging indicator flashes

• Product circuit diagram