My project is a 4 motor spirograph which makes a single laser light into amazing geometrical shapes. It is easy to do it yourself, you need know something about electronics and soldering.
4 pcs DC motor (1-4.5 V / 3-6 V)
4 pcs 10K potentiometer
4 pcs on-off switch
4 pcs TO-220 electronic component
4 pcs about 3cm diameter mirror
1 200 mW laser pointer
1 main on-off switch
1 indicator LED
If you want to connect an indicator LED, you might want to connect a resistor there, depending on the voltage. At 9 volts I used a 10K resistor.
You can buy these components on ebay or aliexpress. You have to connect the main switch between the power supply and the other switches, and the small switches before the circuit attached as a picture. Any questions, just ask.
There are several files, you don't need anything special, if needed, some supports
How I Designed This
I designed the files in Autodesk Inventor, nothing complicated.
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