Endstops and homing sequence in 3D Printing - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to identify the type of endstop used in a 3D printer.

3D Printing

endstop_type = "[1]"

Drag options to blanks, or click blank then click option'

Amechanical

Bmagnetic

Coptical

Dinfrared

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing optical or magnetic which are less common for basic endstops.

The most common type of endstop in 3D printers is the mechanical switch, which physically triggers when the axis reaches the limit.

2fill in blank

medium

Complete the code to describe the homing sequence direction for the X axis.

3D Printing

homing_direction_x = [1]

Drag options to blanks, or click blank then click option'

A2

B1

C0

D-1

Attempts:

3 left

💡 Hint

Common Mistakes

Using positive direction which moves away from the endstop.

The homing direction for the X axis is usually negative (-1) to move the print head towards the endstop at the minimum position.

3fill in blank

hard

Fix the error in the homing speed setting code.

3D Printing

homing_speed = [1]  ;  // speed in mm/s

Drag options to blanks, or click blank then click option'

A"fast"

B-10

C50

Dzero

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string like "fast" instead of a number.

Using negative speed which is invalid.

The homing speed must be a positive number representing millimeters per second, such as 50. Strings or negative values cause errors.

4fill in blank

hard

Fill both blanks to complete the homing sequence code for X and Y axes.

3D Printing

home_axes = ["[1]", "[2]"]

Drag options to blanks, or click blank then click option'

AX

BY

CZ

DE

Attempts:

3 left

💡 Hint

Common Mistakes

Including Z or E axes which are not homed first.

The homing sequence typically starts with the X and Y axes to position the print head before moving the Z axis.

5fill in blank

hard

Fill all three blanks to complete the dictionary comprehension that maps axes to their endstop types.

3D Printing

endstops = {"[1]": "[2]", "[3]": "mechanical"}

Drag options to blanks, or click blank then click option'

AX

Boptical

CY

Dmagnetic

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up axis names or endstop types in the dictionary.

This dictionary maps the X axis to an optical endstop and the Y axis to a mechanical endstop, showing different types used on different axes.