Components Needed

A detailed list of components required to build the wall drawing robot.

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Components

To build the wall drawing robot, you’ll need the following components:

Item	Description	Quantity	Price	Total
Raspberry Pi Zero 2 W	Single-board computer	1	$15	$15
28BYJ-48 Stepper Motor	Stepper motor for precise control	2	$5	$10
ULN2003 Stepper Motor Driver	Driver board for the stepper motors	2	$2	$4
Gondola	Platform for the marker pen	1	$0	$0
Marker Pen	Pen for drawing on the wall	1	$1	$1
Micro Servo Motor	Motor for controlling the pen	1	$3	$3
Toothed Pulley String	String for moving the gondola	1	$2	$2
Power Supply	Power source for Raspberry Pi	1	$10	$10
DuPont Jumper Wires	Wires for connecting components	1 pack	$5	$5
Mounting Hardware	Screws, brackets, etc.	-	$5	$5
3GT 20 Teeth Timer Cog	Timing belt pulley	1	$2	$2

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3D Printed Parts

The following 3D printed parts are needed for the wall drawing robot:

• gondola.stl Gondola
• left_side.stl Left side motor mount
• right_side.stl Right side motor mount

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Make sure you have all the components before proceeding to the next step.

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