# BristleBot Model 3
## Target Audience

* Children (age 8-14) BristleBot Model 3
* Adults (parents/guardians)
** Who would accompany the children to replicate this model

## Starting Point

* Get a feel for visual conception through this Youtube Tutorial Video
** This helps to capture an image of a generic BristleBot Model
* Derive the features for the BristleBot from |Hexbugs

## Replication Goal

* Instead of copying the Youtube Bristlebot, remodel its structure and design based upon the listed materials
** Be creative to gain children's attention and their interests in making this bristlebot
* Like nano hexbugs, the replicated model must move as well
** The vibration caused by the model allows the Bristlebot to move in a direction
** Angle the brush/base so that the model moves forward; not in a loop of random directions
* Improvements from the previous BristleBot Models
** The balance issue has to be accounted
** Maintain the safety rules as BristleBot Model 2 centered on
** Like BristleBot 1, the model must be appealing to the eyes of children

## Materials

* 5 in. by 5 in. wooden block
* Three $1 material's brushes
* $1 material's motor
* Two 3 in. metal strings
* Duct Tapes (Grey and Orange Colored)
** Not mandatory to have separate colors but it looks nicer this way

## Procedure: BristleBot Model 3 (Pics)

* 1) Gather the listed materials
* 2) Position three brushes onto the Wooden Block. Make sure the head of two brushes point at the same direction whereas middle one is facing opposite direction
* 3) Duct-Tape the brushes onto the block of wood
* 4) Duct-Tape the other end to secure the brushes' stability onto the block of wood
* 5) Add the two 3 in. metals on the Motor
* 6) Duct-tape the Motor onto the wooden block
* 7) Duct-Tape the battery onto the block behind the motor
* 8) Duct-Tape the Wires onto the sides of the Battery
* 9) Duct-tape the rear of the model, firmly attaching the wooden base onto the battery

## Procedure: BristleBot Model 3 (Vids)

* Step 1: How to Assemble Model 3's Base
* Step 2: How to Attach Metal Strings on to the Motor
* Step 3: Attaching the Motor to the Wooden Block
* Step 4: Duct-Taping Battery onto the Wooden Block
* Step 5: Duct-Taping Metal Strings onto Battery

## BristleBot 3 Testing

* The demonstration of the BristleBot 3

## Pro(s)

* Significantly safer model compared to the BristleBot Model 1
** No sharp needles or dangerous materials required
* Assembly style to build this model
** Each compartment could be replicated by young children by simply stacking each layer on top of each other
*** Bottom = Toothbrush
*** Middle = Wooden Block
*** Top = AA Battery + Motor
* Duct tape is flexible yet relatively durable to stay attached to the model
** It can also be easily cut with scissor
* Relatively simple and easy to make
** The cutting parts for duct-tapes can be done faster under adult supervision
** No complex or tedious coiling of wires required to attach them to this model's motor
* Portrays an image of a tank
** Children might find this model appealing to their eyes
** Relatively creative external features
* Stable and the model doesn't fall to one side
** Unlike the BristleBot Model 2, prior to the motor activation, the model doesn't fall down to the ground

## Con(s)

* Exposure of vibrator
** As the vibrator spins to cause movement, children's hair (especially girls') could be rolled up
* The model lacks mobility
** Cannot move unless the user constantly hold onto the wires firmly
** When let go, the model almost immediately shuts down
* There is no 'real switch'
** Duct tape may have been used to attach the wire onto the battery but it peals off eventually
** Can only 'move' or 'function' if the holder consistently presses the wire onto the battery
** Frustrating for the young children due to its limited ability to move
** As seen in the video, occasionally, despite pressing onto the battery, the model doesn't function