This is a DIY electrical Robot kit I made for 8-14 students. They can DIY it for their youngest brother as a gift, put above of the candy bowl or other "treasure box" as a guarding monster. When something approached, it will open the eye. This DIY kit can be assembled in 3-4 hours for any one.
I develop it for primary and middle school students when I was a part-time teacher of “maker class” in The High School Affiliated to Renmin University of China. The director wants me to make a kit which is attracting and technical for students. Inspired by Mike Wazowski ( a green cyclopia from Disney Pixar's movie “Monsters Inc”) and monsters who guard the treasures. Materials are milk cartons which was throw away by students every morning in this school. I wish the kits could inspire the student be creativity and pay attention to the view things.
Step 1: Out Look
Step 2: Material List
Here is some materials and tools you may be need.
- 502 super glue
- painting tools
- Micro servo SG90 (9g) - TowerPro
- Ultrasonic sensor hc-sr04
- Microduino Core & USBTTL (Since it's small)
- USB cable for Arduino to computer
- Nuts & Screws ( 1.5m*6 Taobao: https://goo.gl/WpKAkl )
- Tapping Screws ( 3m* 8 )
- L shape plastic supports (https://goo.gl/z5w04O)
- Other plastic supports (https://goo.gl/jZ6v7V)
- Ping-pong balls
- Cachapon ball (or lotteries ball)
- PVC plastic strip (the wite one)
- Milk boxs
Step 3: Part1: Structure
- The internal structure is shown in the first pic. I use 2 motors to control xy directions, X: eyes left & right Y: eyelid up & down. I use PVC plastic strip as an transmission structure.
- Screwed the L shape & other plastic supports tighten together like this.
- Note: The foremost 2 tapping Screws are for locking up the eyelid, above on the left & right yellow strips
Step 4: Part1.1: Electronic Structure
- Make 2 motors glued together like the first pic. Crossed shape, One is facing up (X-axis) another facing behind (Y-axis)
- Cut the raised parts of the 2 motors, convenient for later glue with the base.
- Mount the blades (2 white plastics)
Step 5: Part1.2: Transmission Structure
- Shape the PVC strip like this ( Length: 45~50mm, Width: 7mm)
- Drill 2 holes (diameter 1.5) at both ends.
- Screwed the PVC strip and motor like that
- Holding the hemispherical lettory ball with the
Step 6: Part2: Schematic
Ultrasonic sensor hc-sr04
- Trig - D4
- Echo - D2
- Vcc - 5V
- Gnd - Gnd
- Red - 5V
- Brown - Gnd
- X axis - D8
- Y axis - D10
Step 7: Part 3: Code
- Board selection: Tool—Board—Arduino Uno (or Microduino both available)
Step 8: Step 4: Draw
- Put the electronic part in your milk box and painting as whatever monster you like. Done!!!
- After some friends help me improve it, my "monster" can be mounted to the wall, 2 month later.
In the end, we arranged a Workshop in 2014