Project tutorial
Homemade Claw Machine

Homemade Claw Machine © CC BY-NC-SA

I built my own, fully functional claw machine/ crane game!

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Components and supplies

Apps and online services

About this project

Video of the Final Version of my Claw Machine

Here it is: The final version of my own homemade claw cachine!

It workes with an arduino which controls the motors. Lots of people already tried out playing with the machine, it was a lot of fun for all of them!

If you are interested in detailed information about the single build-steps, just take a look at the first two tutorials V1 and V2.

As German is my native language, excuse me for spelling/language mistakes. It might also be that some descriptions in my schematics are german, just use Google Translator and you know what I am talking about. :D

Step 1: The Cabinet

In 2015, I started building a wooden cabinet for the claw machine. I always updated it until today: I added a color design, lights and glass panes.

Step 2: The Electronics

The most difficult and complicated part of the whole project: The electronics. I am working on the perfection of them until today.

The "brain" of the machine is an arduino MEGA 2560, as it has enough in/outputs for all the motors, etc.

The programming is very similar to real claw machines, even with a rigged mode. Then the claw loses strength when it moved up again.

You can download the zip file containing the current version of the code for the claw machine!

Step 3: Accessoires

Of course the machine needs some "accessoires" like the keypad and some LED lights.

Step 4: The Gantry Assembly

It is the most important part of the whole machine: The motors and the claw itself! I bought the assembly online, as it would be very complicated to build it yourself. Then I just rewired the whole thing and added some limit switches.

Step 5: The History of My Claw Machine

A few pictures of the very first version of 2015 until the latest and final version of 2018 of my awesome claw machine.

Here are two video with gameplay:

Thank you for your interest on my tutorial! Have a nice day!


Claw Machine Code V3005C/C++
This is the complete Code of my Claw Machine!
No preview (download only).

Custom parts and enclosures

Color Design
Claw Assembly
I found this in a Manual of a real Claw Machine.
Claw assembly i5zo2hednq
Claw Crane Assembly
I found this in a Manual of a real Claw Machine.
Claw crane assembly illmirnlgy
Double Motor Assembly
I found this in a Manual of a real Claw Machine.
Double motor assembly 6qyvlrhpvw


Claw Machine Program
Logic Schematic of Claw Machine Program
Circuit to invert the polarity
Circuit to invert the polarity of the Motors, so they can change their spinning direction.
Umpolschaltung 2 0 msmkjc6erl
Input assignments
Schematic of what inputs are going to what pins
Relay assignment
Old Schematic
Old Schematic of analog Claw Machine without Arduino
Schaltplan greifautomat bild phyorabfwx


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