Color changing gondola V0.5

The design was based on ZarPlotter's gondola.

The idea is to use a servo to do the Up/Down movement of the gondola. The other servo controls the rotating movement of the pen holder (4 pens). According to this design this servo must be activated 3 times to rotate 90 degrees the pen holder. The stop piece locks the system so the pen holder stays in place. You'll need springs or elastic bands to hold the moving pieces against the pen holder.El diseño general se baso en la góndola del Zar Plotter