DIY Desktop Fan: Adjustable Speed & Timer

If you're interested in building your own desktop fan, take a look at this article.

The user manual for the DIY desktop fan is as follows:

Front Panel Function Description:

The functions of the fan control buttons are shown in the diagram below.

Fan Control Button – Function Description:

1. First Press:

· The left indicator light of the fan control status turns on.

· Both fans run simultaneously, and the speed is displayed on the digital display.

· Rotate the rightmost button to adjust the speed: turn to the right to increase speed, and turn to the left to decrease speed.

2. Second Press:

· The right indicator light of the fan control status turns on.

· Natural wind mode: the fans run for 2 seconds and stop for 1 second, with the fans alternating. Speed is displayed on the digital display.

· Rotate the rightmost button to adjust the speed: turn to the right to increase speed, and turn to the left to decrease speed.

3. Third Press:

· The left indicator light of the fan control status flashes.

· Only the left fan runs, while the right fan stops. Speed is displayed on the digital display.

· Rotate the rightmost button to adjust the speed: turn to the right to increase speed, and turn to the left to decrease speed.

4. Fourth Press:

· The right indicator light of the fan control status flashes.

· Only the right fan runs, while the left fan stops. Speed is displayed on the digital display.

· Rotate the rightmost button to adjust the speed: turn to the right to increase speed, and turn to the left to decrease speed.

5. Fifth Press:

· Pause the fan. The button count is reset to zero.

6. Long Press:

· Pause the fan. The button count is reset to zero.

Each time you adjust the speed or set a timer, the settings are automatically saved after 5 seconds. The next time the fan is turned on, the previous settings will be read.

Timer Control Button – Function Description:

1. Long Press for 0.5 Seconds:

· The timer indicator light flashes.

· Enter the timer setting mode, rotate the rightmost button to adjust the time: turn left to decrease the time, and turn right to increase the time. The time value will be shown on the digital display. Time units: minutes.

· Press the fan control button to exit timer settings.

2. Short Press Once:

· Start or stop the timer.

· When the timer indicator light is on, the timer is active, and the remaining time will be displayed on the digital display.

· When the timer indicator light is off, the timer is not active.

· When the timer reaches 0, the fan will pause.

Rear Panel Function Description:

The operational process is shown in the diagram below:

End