Archive for the 'Initial Writeups' Category
[Team 7] – Prototype I: [Micro Assist]

Concept Test

To be completed by the ENTR team.

Picture/Image

Description

A micro robot, around 1 inch cubic, that will have the ability to aid law enforcement or other public safety organizations by giving them the ability to access unknown locations or enclosed areas where there are unkown dangers.  The micro robot will also give them the ability to access places not accessable by other means.  It will also have the ability to pick up certain objects, survaillance the area, and provide, or produce audio.

Interview Questions

1.  How would you use this product?

2. How would you want this to be controlled?

3. Do you have a similar product?

4.What kind of other features would you want?

Description of Prototype:

A micro robot with a copper, or aluminum chassis.  The robot will be equiped with multi terrain track wheel system.  It will be controlled by a wired controller and will have the ability to atleast move bi-directionally

Timeline:

date process and goals comments
Feb 12
  • Discuss idea with business majors
 
Feb 19
  • Receive materials
 
Feb 26
  • Final Report and 1st Prototype 90% complete
 
Mar 12
  • First Prototype built and tested
 

Materials Needed:

qty item with link unit cost comments
1 arduino uno 30 any Arduino OK, including older Arduinos
2 DC motor 20 6mm to 8mm
1 Motor Driver 5  
1 Rubber Track System ?  
1 Copper or Alum Chassis ?  
       
       
       
       
       
[Team 4] – Prototype I: [Easy Opener/Closer]

 

Concept Test

ENTR students will handle majority of this portion. Engineering students will help when needed. 

Picture/Image

Description

This product will take an already existing product and allow it to be modified and greatly enhanced. The basic purpose of the original device is to simply remove lids jars. Our design will do this however it will it automatically with the push of a button. Our design will also put the lid back on for the customers. This extended feature will help residents of CPRF and perhaps countless others. 

Interview Questions

Q: Are there any problems you encounter throughout the day that you wish there was a solution to?
A: Many times I have difficulties opening and closing bottles or jars. My grip strength isn’t good enough to be able to open many screw on lids.

Multiple residents responded similarly:
It would be great to have a device in the kitchen that would open and close bottles and jars for me as I am not always able to grip tight enough to do so.

Description of Prototype:

This product will take an already existing product and allow it to be modified and greatly enhanced. The basic purpose of the original device is to simply remove lids jars. Our design will do this however it will it automatically with the push of a button. Our design will also put the lid back on for the customers. This extended feature will help residents of CPRF and perhaps countless others. We will use an electric motor that can go either way, forward or backwards. We will also add sensors and automation to the design. the will all the customer to simply push a small button and the device will do the rest. 

Timeline:

The below table is just an example for how you might do a timeline. Content in the table is also just example content. Feel free to change and restructure the below table as you wish:

date process and goals comments
Feb 12
  • Meet with Instructor, get input
  • Begin browsing and ordering of materials
 
Feb 19
  • Have materials in 
  • Begin initial mockup and design of device
 
Feb 26
  • Beginning testing and adjustments of device
 
Mar 12
  • prototype completed, working, report submitted
 

Materials Needed:

qty item with link unit cost comments
1 B&D Lids Off Jar Opener 50  
1 arduino uno 30  
8 Sensors   These will be used to have the device automatically adjust the height and size for opening the jar
1 Reversible motor    
1 Switch Relay    
       
       
       
       
       
Team 3 (Blue Team) – Prototype I: Pressure Regulating Air Cushion

Picture/Image

4-cell implementation of the air cushion.  Black portions are pressurized airways, purple portion is the fill point.

Description

This product is a seat cushion intended for use by individuals with reduced lower-body movement and sensation.  Its primary aim is to reduce incidence of pressure sores.  Because pressure sores are caused by uneven weight distribution, whereby one fleshy area incurs a disproportionate amount of force, the cushion will respond to variations in the user’s posture and equalize pressure across the contact area.  The cushion will consist of a two-dimensional matrix of independent air chambers which are inflated via a small compressor motor.  A micro-controller will monitor air pressure readings and ensure that each chamber’s pressure stays in the target range.

Interview Questions

1. Would you find it beneficial to have a seat cushion that responds to your body weight distribution in order to help alleviate pressure sores?

2. What inherent drawbacks are present in your current seat cushion regarding pressure alleviation and the inhibition of pressure sores?

3. Would you be willing to sacrifice a small percentage of wheelchair battery life in order to have an electronically-controlled, pressure alleviating seat cushion?

4. To what extent would a small amount of motor noise during intermittent inflation deter you from wanting to use such a cushion on a daily basis?

Description of Prototype:

Our first prototype will demonstrate the ability of the micro-controller to receive as inputs the air-pressure measurements taken by gauges/sensor attached to air chambers.  It will consist of two inflated air chambers.  Displays will show the variations in pressure for each individual chamber as either air is let out through a valve, or force is applied.

Timeline:

date process and goals comments
Feb 12
  • Prototype decided
 
Feb 19
  • Ordered everything
  • Plan to build what we can
  • Complete Progress report
  • Fill out the Code of Conduct
 
Feb 26
  • Complete Progress Report
  • Gather more information for the concept
  • Continue/revise work on prototype
 
Mar 5
  • Complete Progress report
  • All materials received
  • Finish prototype soon
  • Start testing
 
Mar 12
  • Final Report due
  • Prototype finished and tested
  • Present the Prototype
 

Materials Needed:

qty item with link unit cost comments
1 Arduino    
2 BMP085 Barometric Pressure Sensors     $20.00  
2 Inflatable Pillows     $12.00  
2 Brass “barb” connectors   ~ $5.00  
? Valves and fittings for pump             -  
PVC Tubing   ~ $5.00  
Team 5 – Prototype I: Remote-Controlled Lowering Shelf

 

Concept Test

ENTR majors are doing marketing research.

Picture/Image

Description

A remote-controlled system to lower upper shelving units to provide easy access to wheelchair occupants. Functionality would include ability to operate each cabinet independently, and would restrict multiple cabinets from being out at the same time for safety reasons.  Each cabinet would have a shelving unit inside that would be brought out by folding arms and a rotating motor.  The controller would be wireless, operating off either Bluetooth or RF.  The shelf could include a button on the cabinet.  This system would make shelves accessible to people in wheelchairs.

Interview Questions

Would you prefer a wireless remote to control the shelf or a button on the cabinet? What height would be ideal for these cabinets? What’s the maximum weight these cabinets can hold?

Description of Prototype:

The prototype would be a single shelving unit with a basic lowering mechanism. The system would be initially controlled by a button (wireless or connected). The lowering mechanism would folding arms, rotated by a motor with enough torque to hold it in place. The prototype is testing the stability of the shelf and the lowering mechanism, and that it can be controlled remotely.

Timeline:

date process and goals comments
Feb 12
  • Discuss project with the instructors and the other team members.
  • Determine what parts are required for the prototype.
  • Start looking for materials needed.
 
Feb 19
  • Finish interview with CPRF.
  • Have parts ordered.
  • Start working on mechanical structure of the pull-down shelf
 
Feb 26
  • Have mechanical structure completed
  • Start adding motor.
  • Start integrating arduino controller.
 
Mar 5
  • Add motor to mechanical structure.
  • Build in controller.
 
Mar 12
  • prototype completed, working, report submitted
 

Materials Needed:

qty item with link unit cost comments
  Arduino    
  Brackets   Used to build arms.
  Motor    
  Wireless Controller   Bluetooth or RF
       
       
       
       
       
       
[Team 6] – Prototype I: [Mechanical camera stand control system for wheelchairs]

 

Concept Test

To be done by entrepreneur students

Picture/Image

Description

This product is a mechanical camera stand that will aid handicapped people who uses wheel chair to easily and effectively take pictures from their camera. Users will be able to position the camera as they desire very quickly by using joystick control system placed on wheel chair. Camera can be maneuvered +/- 45 degrees of pan & +/- 30 degrees of pitch, rotate 360 degrees (Yaw) and it can be raised up and down.

This will help them to save time and take pictures or videos when they want. This product will help the handicapped people explore the world and save memories as they want and will help them to be creative.

Interview Questions for handicapped people

  • Are u interested in taking pictures or wished you could take pictures effectively?
  • Is this product something you will use/buy?
  • Do you prefer joystick controlled camera or a switch controlled system?
  • Would you be able to use joystick comfortably?

 

Description of Prototype:

We will design the product as below:

  • Joystick which could be mounted on the wheel chair so we need a clip attached on the joystick.
  • vertical stand for the camera which is mounted on the wheel chair. This stand can go up and down.
  • The base of the camera has a rotating base which is on the top of the fixed base connected with the top part of the vertical stand.
  • We are thinking to use three servos (we are working on the specs) to control the position of the camera mounted as shown in the picture.
  • Joystick and servos will be connected to arduino board so that they can communicate with each other.

 

Timeline:

date process and goals comments
Feb 12
  • Discuss with team members and instructors about the design
  • Start buying(browsing) the required materials for the project
 
Feb 19
  • Start building the mechanical part of project (structure)
  • Start communicate with servos using the arduino board (wired)
 
Feb 26
  • Mount servos in the mechanical structure
  • Start communication of joystick with the arduino board  (wired)
 
Mar 12
  • Start Putting it all together
 

Materials Needed:

The price below is an estimation of the product that we have found as a close fit to our design so far.

qty item with link unit cost comments
2 Servos (90 degrees) ~ $10 We are still looking for the specs to finalize the power required
1 Servo (continuous) ~$25 We are still looking for the specs to finalize the power required
1 Joystick

 ?

We have not decided if we are going to use 1 or 2 of them  for different directions
1 arduino ? we do not know yet what kind of arduino we are going to use
  wood or metal ~ from junkyard or from unused material from old project
       
       
       
       
       
Team One – Prototype I: RPTC – Robotic Plot Table Camera

Concept Test

TBD by business majors.

Picture/Image

Description

This unit is a dual-axes mounted digital camera and microscope set that enables its users to easily view film plots on a conventional back-lit plot table. The device will provide the following features:

  1. Provides uninhibited viewing access to plot table surface
  2. Course and fine access adjustment
  3. High-resolution digital images can be saved by computer
  4. Accessible to persons unable to use conventional microscopes
  5. Easy to assemble and physically robust
  6. Ergonomically friendly 

Interview Questions

  1. What is your vision for this product?
  2. Will code permit that this task be performed via computer monitoring?
  3. What resolutions will be demanded for a computer-controlled camera?
  4. Do you have a camera that you could provide for the job?
  5. Would it be possible/beneficial for the product to have remote-access capabilities?
  6. How mobile will the product need to be (i.e. will this product need to be removed from the light table or can it be fixated to the table)?
  7. Do you have a budget for this?

Description of Prototype:

The RPTC will move a test equipment set across a plot table in two axes. The test equipment set will consist of a digital camera for quick viewing and a digital microscope for detailed inspection of film plotted images. The x- and y-axis travel will be provided by a combination of motors, Dacron line, and pulleys. Framework will be provided by ¾” rigid conduit, allowing for x-axis movement. This conduit will not only provide a surface for the equipment to ride on but will also provide a passage for wiring. The y-axis movement will be provided by a carousel gliding on chromed pipe attached to concave wheels riding on the outer framework. Digital inspection equipment will be mounted in the center of the carousel. Carousel, inspection equipment, and chrome-pipe glides will form a complete central assembly. This assembly can be removed from the framework after detachment of control cable wiring harness. Controls will be provided via joystick and variable rheostat for coarse and fine control. Microscope and camera controls will also be provided. Control cabling will be suspended in strain loops from auto-retracting line. First working prototype will consist of tethered wired controls. 

Timeline:

Date

Process and Goals (to be completed by given date)

Feb 12

Submit prototype I write-up

Feb 19

Materials purchased and framework built

Feb 26

Carousel glides and wheels assembled / Begin writing report for prototype I

Mar 5

Identify wiring needs and build control harness / Finish report

Mar 12

Install servos and attach temporary controls (PoC)

Materials Needed:

Qty

Item (with link)

Unit Cost

Comments

4

¾” rigid conduit (or IMC) (10’ stick)

13.60

 

4

¾” rigid L-body

5.31

 

2

½” chromed pipe (rigid)

10.00

Estimated Cost

1

70mm longboard truck/wheel/bearing set

35.00

Polyurethane, with bearings

1

Spool of Dacron fishing line (110 yd. spool)

20.00

 

6

1” diameter pulley

2.00

 

1

8” steel junction box

35.00

Will look for cheaper

1

Aluminum carriage

 

Look for scrap in aero shop?

4

Nylon bushings

1.00

 

4

½” conduit strap

0.30

 

2

Servo motor

75.00

Cost is an estimate

?

Fasteners

?

 

?

Wiring

?

 

1

Joystick

8.00

Cost is an estimate

2

Fine-tuning control knob

?

Rheostat?

1

120VAC/24-12VDC Power Supply

50.00

May use old computer supply

Team 2 – Prototype 1: Universal WheelChair System

Team 2: Universal Wheelchair System

 

 

Description:

 

Our idea is basically about to creating a open source interface it is called the Universal Wheelchair System which can help us adding more features (cameras, games, brain sensor controller, etc…) to facilitate the disable people. It will give handicapped people some degree of flexibility in choice of controller based on users specific needs. In this way, they can more easily add whatever capabilities they wish to their wheelchair. Our first task is to add the system plus a rear view camera. The system will have a touch screen interface at first connected to an Android OS . We will customize the operating system to handle the functionality we need. We will be able to use the App programming interface to get our first prototype.

 

Interview Questions

 Are there currently any capabilities that your wheelchair lacks that you wish you could add to it? Would you use a backup camera with your wheelchair? Do you have the dexterity to use a touchscreen interface? What basic capabilities should come standard with the package? Approximately what size would you prefer the display to be?

 

Description of Prototype

For our first prototype, we plan to have a android-based tablet for the display, mounted on an arm that can connect to the wheelchair. With this tablet, we plan to add the capability to run a rear view camera on the tablet. We will begin developing an open source interface to run multiple features. The interface should be able to run other features in the future.

Testing:

Will reveal the interfaces ability to run added capabilities smoothly.

Will whether the mounting arm is ergonomically designed, and how well it carries the weight of the tablet.

The size and type of tablet used for the display needs to be determined.

Unknowns include the API interface, arm structure,

Timeline

Date

Process and Goals

Comments

2/19/13

Parts ordered and received

Initial testing of parts to better understand their capabilities

 

Choose API interface

 

2/26/13

Display basic camera feed on display

 

Programming of basic App frame complete

 

3/5/13

Buttons added to control system

 

Add relays for later for use with future features.

 

3/12/13

Create more visually appealing mounting system

 

Finalizing all specifications

 

 

Material Needed:

  • Android-based Tablet

  • Camera

  • Mounting Brackets and Base

  • USB Relay Box