This is a drawing robot or Draw-Bot for kids. Its easy to make and can draw random lines of different color on a paper. Each drawing is different and unique from other as its random. So make it and enjoy drawing with it.
Step 1: Making Instruction
Here is the video instruction. ( Video )
The main part of the robot are a vibration mechanism made from DC motor and 3 marking Pens. The load on motor is not symmetrical, therefore it vibrates and gives a random motion to the bot.