Public toilet

Print each component once. No special print settings are required.

Before installing the servo, first connect it to the development board and upload the following code to your Arduino:

#include <Servo.h>

Servo drive;

void setup() {
  drive.attach(9);
  drive.write(20);
}

void loop() {
}

This moves the servo to its starting position.

Then disconnect it from the development board again and insert it into the part “MM.stl”. The cable is routed toward the side with the recess. The servo is neither glued nor screwed in place.

Now place the part “AW” onto the ring with the servo. Glue the top of the part “MM” to the underside of “AW”.

Next, insert the two gears. First place “ZR” onto the servo and then “ZL” onto the left pin in “AW”. Neither gear is glued or screwed in place, and both should be able to move freely.

Now insert the two doors “WR” and “WL”. Place them in the intended guide rails and guide them into the gears.

Make sure the doors are centered at the front and fully closed. The beveled corners of the doors point toward the back.

Now position the part “IW” inside the model. Do not use glue here either, so the gears are not accidentally glued in place.

Now place the roof “D” on top and glue it to the outer ring of the part “AW”.

Now install the final code on the development board and then connect the servo to the board.

You can fine-tune the end positions of the doors using the following lines of code:

int min_pos = 20;
int max_pos = 120;

You can increase or decrease the values “20” and “120” as needed. It is best to approach the desired positions in single-step increments. After every change, you must upload the code to the development board again.

The variable “min_pos” defines the end position of the doors when closed, while “max_pos” defines the end position when open.

When you are satisfied with the result, you can integrate the toilet into your layout. To do this, drill a hole with a diameter of 38 mm into the layout board using a hole saw, then place the toilet into the opening.