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Picture of Motorize a LEGO Car by a Motor from a Broken DVD Player
Battery motorized LEGO.jpg
Motorized LEGO cable connection.jpg
Motorized LEGO car.jpg
Motorized LEGO switch.jpg
Motorized LEGO.jpg
This simple project showed my kids how simple machine works - electricity, pulley, velocity ratio and mechanical advantage.

Step 1: Step 1 - Fix the motor

Picture of Step 1 - Fix the motor
My son has a couple of LEGO sets but none of them are the Technic or those come with a motor. I got one motor from a broken DVD player.

In order to fix it in LEGO blocks, I used some blu tach.