The purpose of a Useless Machine is to turn itself off when activated. Kits and built examples are available for purchase. While researching I found LEGO models but without kits or instructions.
Challenge accepted!
I completed the model in March of 2017 and revised it today.
Without a parts list or instructions I decided to reverse engineer the device from the following video: [011] Lego Technic - Useless Machine
I created a model using LEGO Digital Designer (LDD) before buying the parts. Download the LXF model
Using LDD I generated a PDF with building instructions and a parts list at the end. Download the PDF instructions
NOTE: The model and instructions do not include the LEGO Wind Up MOTOR 6x5x3! It was not available in the LDD.
Here is the model at the final step of assembly
