Here’s a weekend junk bin job if we’ve ever seen one. [Pat] utilized a quartet of computer fans to make his laser Spirograph. choosing to try this simple develop for yourself will run you with a great deal of fundamentals when it comes to interfacing hardware with a microcontroller. In this situation it’s the Arduino Nano.
The Spirograph works by bouncing a laser off of mirrors which are connected to the PC fans. When the fans spin the slight positioning modifications cause the laser dot to bob as well as weave in visually pleasing ways. You can catch twenty minutes of the light show in the clip after the break.
Three of the fans have mirrors attached, the housing of the fourth is utilized to hold the laser diode as well as make assembly easier. A TC4469 motor driver is utilized to link the fans to the Arduino. The light show can be manually managed by turning the trio of potentiometers which are checked out utilizing the Arduino’s ADC.
If you handle your method with this develop perhaps you’ll move on to a configuration that throws laser light around the room.