Archive for the 'Initial Writeups' Category
Initial Writeup assignment

Using the template, write an initial writeup for your prototype II.

  • due midnight before March 29
[S.R.P.R] – Prototype II: [Dual Mode Table]

Description of Idea:

Our product is a movable and rotatable electrical table for the  C.P.R.F residents .

Functionality:

  • This product is attached to the wheelchair of the C.P.R.F residents.
  • It will have dual functionality where it can be used as a table for electronic devices (laptop and ipad) and also can be used as a food table.
  • It will have extendable arms that can be controlled by the button.
  • It will also have straps to hold the electronic devices while it is being used as a food table.
  • It will be integrated with USB ports for charging the devices.

Description of Prototype:

Since we wrote first prototype idea, our project has been modified several times because of the various reasons such as different types of wheel chairs, materials that is used for a table, design of the table etc.  For our prototype II, we are focusing on just a retractable function of arm that will be mounted on the table. We are planning to have a model to present for the Open House. We will have actuator attached to a stationary wooden block where arduino will control the actuator to move. By the end of this prototype II, we wanted to have table cut out in Styrofoam and planning to have the movement for the actuator be done. We worked a little bit with actuator on our first prototype as well. We were able to control of the actuator where it pull out and pull in but we were not able to control the rotation at the stopping point of the actuator. Therefore, we are deciding to have different actuator. We got some training on H-bridge and currently, we are working on how to use it for our project. If we can work on the one side of the wheel chair, it will help us a lot to further our progress to our full idea. 

  • Have one side of the project be done
  • Actuator fully control by Arduino
  • Have first movement of the table ready and also control by Arduino
  • Have Styrofoam cut out according to the design in CATIA.
  • Research and decide the material for the table (so far we thought of composite that we got from Tom
Table Dimension: 22″ x 20″

Timeline:

 

date process and goals comments
April 6
  • all components are in. Start initial playing with components, figuring out how they work.
  • continue experimental programming learning to use Arduino and H-bridge.
 
April 13
  • initial Arduino programming for controlling actuator complete
  • experiment the Arduino programming for the first movement of the table
  • cut out styrofoam for the model to show for final project
 
April 20
  • hardware and software working together, although perhaps not robust yet
 
April 27
  • prototype completed, working, report submitted
 

Materials Needed:

If you are needing EECS to provide materials for you, list them here. We can then work out how to obtain these with our reimbursement policy:

qty item with link unit cost comments
2 Linear actuators 64 actuator must be over 9″
1 arduino uno 30  
2 H-bridge   for the direction of the actuator
2 DC server motor    
N/A Resistors    
       
       
       
       
       
Team Green Wu – Prototype II: Bicycle-powered Generator

Description of Idea:

  • To generate electricity to be stored or used for modular attachments
  • To be able to measure torque, power, statistics, energy generated and energy consumed
  • It needs to be small enough to not impair the ability of the bicycle
  • The device will generate power with the aid of the person using the bicycle. It is therefore self-powered.
  • There are some safety concerns pertaining to electricity and power storage. It could be dangerous if the device does not effectively consume and release power. Certified parts will be used and safety devices will be implemented.
  • The product needs to be reliable enough to power an external device through a USB connection.

Description of Prototype:

Our prototype will be able to sense the revolutions per minute of the bicycle wheel and it will then output this speed as well as other statistical data to a microcontroller. The microcontroller processes the data, and forwards it to a standalone LCD screen or laptop display. We will use a specialized battery system for our energy storage. Our prototype will be able to convert and store electrical energy produced  by a DC motor to AC, and allow that energy to power household devices.  These displays will show traditional exercise bike outputs as well as provide educational environmental information, such as how many lightbulbs a user could power, etc.

  • As a part of this project, we will be collaborating with a CPRF client who always wanted to ride a bicycle, but never could because of her disability. We will design a prototype of a hand-pedaled stationary bike connected to a generator that will power an LCD display. 
  • This LCD display will utilize an Arduino microcontroller to control output of statistics to the display. 
  • The battery will be a Duracell Powerpack 600 Jump Starter & Emergency Power Source, a 115V AC, 12V DC battery pack with built in Built-in AM/FM radio and digital alarm clock!
  • Using a charge controller (enhanced voltage regulator), and a blocking diode to ensure proper power is delivered to the battery, preventing burnout of the battery cells and ensuring safe usage.
  • We will build a stationary exercise stand for our CPRF client to test on and provide data which could be used to determine the feasability of a hand-pelled, street safe bicycle for our client.
  • In further stages of prototype development we will build modular attachements, which by utilizing the power produced/stored by our stationary exercise system, will extend the usability of the initial design.
  • Anticipated cost is roughly 300 dollars for this portion of the design project.

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
April 6
  • all components are in. Start initial playing with components, figuring out how they work.
  • continue experimental programming learning to use Arduino microcontroller
  • complete interviews with target consumers/consumer groups
 
April 13
  • initial Arduino programming complete
  • skeletal structure complete
 
April 20
  • hardware and software working together, although perhaps not robust yet
 
April 27
  • prototype completed, working, report submitted
 

Materials Needed:

If you are needing EECS to provide materials for you, list them here. We can then work out how to obtain these with our reimbursement policy:

qty item with link unit cost comments
1 Duracell Battery Pack $149-169 Expensive. Can EECS sponsor this?
1 Capacitors, circuit parts ?  
1 Blocking Diode 8.50  
       
       
       
       
       
       
       
MAR – Prototype II : GPS tracker for wheel chair

Description of  idea:

Our goal for the year is to make a GPS tracker for the wheel chair. It will be working as an emergency module.

  • This device helps a person with disabilities to inform somebody in case of an emergency.
  • Wireless signal transfer, easy manageable and handling, portable, power saving, weather resistant, chances to implement the product to provide service to multiple users if needed.
  • $200
  • A small device will be designed to wear around the neck or wrist to pass the wireless signal. An application will be designed to respond to the given signal and send a message to the emergency contact.
  • Very limited power is needed only in case of an emergency and built in batteries will be used for that.
  • Not aware of any safety concerns.
  • The product is completely independent from the main wheel chair functionality. This device is small enough for user to easily use as needed, and very easy to operate without any extra knowledge and training.

Description of Prototype:

* One of the major problems we experienced during this journey was finding a compatible device to this project. During the first prototype we attempted to install latest android version to a hp tablet of one of our team members. Even though it was sufficient to track the Bluetooth signal sent from our device, it will not be the perfect match for our project since we are thinking about sending sms and such. During this time we are going to install latest android to one of our phones.

* During the first prototype we were able to design the circuit board using Arduino and initially attach the SMID device to it to test it’s basic functionality.  We were able to supply the power to SMID device and get it work but we experienced a new issue on our way that it lost showing it’s MAC address for some reason. During Prototype II we are planning on troubleshooting the issue, implementing the circuit board by designing the basic switch functionality.

* From the Android programming side we were able to setup our working environment and start developing the application. Android application development using Java is a new experience for all of us as this is the first time we are working on java application development for a real world problem. Application development needs a lot of research, studying the material and a lot of practice.  We are on our way of learning Android application development and we have a lot more to learn in order to build code for our entire project to function. During prototype I we were able to develop an android application to function till to the point where it turn on the Bluetooth signal of the device. Even though we had developed an android service for that and also to function further it had errors during execution and did not function. During prototype II are planning on troubleshooting the application developed, get the android service running in our device and hopefully build the application to the point where it recognizes a particular Bluetooth signal in order to respond when it is presented.

* Prototype II will be another step towards our final goal of this project. After prototype II we are hoping to have a circuit board that managers power supply to the SMID module(adding switch functionality to the circuit board), and also which manages the Bluetooth signal well. From the application building side, we are hoping to have it build to the point where it can recognize a certain Bluetooth signal and respond to it. From the materials side, we are hoping to get the smart phone working with new android version installed.

* After finishing prototype II we will still be needing to work on the size of the circuit board. We have to make it smaller to use it as a wrist band. We would still be needing to design the button functionality and also a wrist band. From the programming side, we would still be needing to develop the application to calculate GPS coordinates and send a message.

* Anticipated cost : So far all we needed was $15.00 to purchase our SMID module.  We are still having issues figureing out which android device to use in our project and trying various possibilities to get it done with minimum cost. Amount we needed is still undecided.

Timeline:

date process and goals comments
April 6
  • solve the Bluetooth problem, and test.
  • Start upgrading the smart phone android version.
 
April 13
  • search for a switch and battery carrier for the bluetooth circuit.
  • putting the switch and the battery together with circuit board which we have for bluetooth. 
  • Testing the upgraded smartphone to make sure it’s functionality and the Bluetooth signal tracking ability.
 
April 20
  • troubleshoot the bluetooth with phone  .
  • Testing the service code with upgraded smart phone and test for the functionality.
 
April 27
  • writing the final report and have the prototype 1  working for the show in the open hous 
 

Materials Needed:

Bluetooth SMD module

Switch

Circuit board

Android Phone

Power supply

[Team julio] – Prototype II: [MEDS]

 

Description of Idea:

our project goal is to use a device MEDS (Medicine Expiration/refill Data System) will assist patients by notifying them when a medicine in their personal cabinet is about to expire or needs a refill. MEDS will use a handheld scanner to populate the patient’s personal database with every medicine that is added to his medicine cabinet. The system will control the expiration date and the refill date for each medication and display the result with a buzzer alarm on a LCD display integrated on the device.

MEDS will be a stand-alone device to be placed near the medicine cabinet or in any suitable and visible location to the patient. When a medicine that had been properly added to the device’s database is about to expire (30 days early notification) or run-out, MEDS will sound a buzzer/light alarm and display the medicine name and condition (expired, or refill) on the integrated LCD display.

Description of Prototype

    • To send an early notification notification message about the drug expiration date and prescription refills.
    • What are 5 measurable things your product should be able to do?
    •  Send a sound alarm accompanied with a message diplayed on LED Board or LCD indicating that specific

       medcine is about to expire or that BB medcine  needs to be refilled two week ahead of its actual expiration date.

              

  •  in our  prototype II we will extend the notification by adding a third light for expirattion date and a buzzer to enhance the alarm sys
  •  Embeding the database or the mdicine record in our codes as well as getting our memory sheild working.
  •  our prototype II is continuation of Part I ,by enhancing the notifications means i.e adding a buzzer, 3rd light for expiration date
  • Our 2nd prototype will be able give a to tell the client when to take his next does, to notify the client to refill his medcine and finally able dispaly the name of the specific medcine on LCD screen to refill it or show its expuration day.
  • Anticipated cost will be around $35(since we only gonna need another 590.PRO3K-A box)
  • Prtotype II will almost the same size as Prototype I

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
April 6
  • all components are in. Start initial playing with components, figuring out how they work.
  • complete interviews with target consumers/consumer groups
 
April 13
  • initial Arduino programming complete
  • adding a 4th light for expiration
  • adding a buzzer
 
April 20
  • hardware and software working together, although perhaps not robust yet
 
April 27
  • prototype completed, working, report submitted
 

Materials Needed:

If you are needing EECS to provide materials for you, list them here. We can then work out how to obtain these with our reimbursement policy:

qty item with link unit cost comments
8 shift register 1.50 non
1 arduino uno 30 we already got one,unless we encounter any deffect with it
1 LCD display 8.50 any LCD display OK
1 Resistor assortment 7.21 as of now we dont need one
1 590.PRO3K-A 4 holes $17 our previous BOx only has a room for three lights, we need to add another light for medcine expiration date as well as a buzzer
       
       
       
       
       
Team Glen – Prototype II: RFID Reader and ID tagging system

Description of Idea:

Our plan over the next two semesters is to design a Smart Mailbox that will not only notify mailbox owners that mail is waiting to be picked up but will also include a RFID scanner that will lock/unlock the correct mailbox when a unique ID tag is placed in front of the RFID reader. 

The design will include:

  • One Master ID tag that will lock/unlock All Smart Mailboxes (The Master Key)
  • Individual ID tags that will lock/unlock each individual Smart Mailbox (The mailbox owner’s key)
  • Smart Mailbox doors that will automatically open and close when proper ID tag is scanned by RFID reader.
  • Our prototype I design with IR sensors inside mailbox and wireless system that notifies the owner that mail is waiting to be picked up. (Basically already designed, but range and CPRF comments need to be addressed)

Description of Prototype:

The description of the project idea above is our two semester design of the Smart Mailbox and there is no way to complete this in just one month, but we can break down major parts of the project to make the overall project more manageable.  Our prototype I design addressed the major concepts of the wireless notification system use IR sensors that we will be using in our final project design.  For our prototype II design, we will continue to break down final project major design concepts with the design of the RFID reader and ID tagging system that we will also be using in our final project design.

Description of Prototype II (RFID reader and ID tagging system) design and design phases:

  • Program 1:  Write simply program that does nothing but just read our ID tags and get each ID Key that is assigned to each tag.  We need this program written before we can do any specific application with individual ID tags.
  • Program 2:  Write program that will:
    • Read the scanned ID tag
    • Compare scanned ID tag with each assigned mailbox key
    • If ID tag and mailbox key match, open/close mailbox (for prototype II open/close mailbox will be realized with LEDs.)
  • When proper ID tag is read by RFID Reader:
    • ID tag #1 = program 2 assigned mailbox #1 key, RED LED is on/off
    • ID tag #2 = program 2 assigned mailbox #2 key, GREEN LED is on/off
    • ID tag #3 = program 2 assigned mailbox #3 key, BLUE LED is on/off
    • Master ID tag = program 2 assigned master key , ALL LEDs is on/off

Note:  The output LED signal used in Prototype II (RFID reader and ID tagging system) will be the output signals used to turn servo or step motor that will open/close mailbox doors automatically.  We will also continue with range enhancements for Prototype I design and address CPFR comments to our Prototype I design as well.

Timeline:

date

process and goals

comments

April 6

  • All components are in. Start initial playing with components, figuring out how they work.
  • Wiring diagram of Prototype II design
  • Start writing Program 1 to get ID tags keys

 

April 13

  • Program 1 complete, have keys to each ID tag
  • Start writing Program 2 that will make use of our ID tags
  • Work also on ideas of increasing wireless notification system range

 

April 20

  • Program 2 is complete, Prototype II works, but probably not perfect yet
  • Final project requires two serial ports, Program 2 needs to be modified to work with software serial
  • Increase range of wireless notification system

 

April 27

  • Prototype II completed, working
  • Prototype II report submitted
  • Review Final project and our comments to it

 

Materials Needed

qty

item

unit cost

comments

1

RFID Reader

10.00+Shipping

Used to scan and read the RFID tags

4

RFID Tags

2.00+Shipping

Unique key to lock/unlock Smart Mailbox

2

Antenna

?

To increase range of wireless notification system

3

LED

?

Used to identify when correct key ID tag is scanned

1

Ardiuno

30.00

Used to serial interface with RFID Reader

Electric Chair – Prototype II: Electric Chair

Description of Idea:

Weather proof, low profile safety light system.

Description of Prototype:

  • For the Prototype II we will implement our system so it can be controlled from the wheelchair bus controller.
  • Our goal is to fully understand the wheelchair bus system (DX- bus) and apply our system to it.
  • Prototype II is the extension of Prototype I. For the first prototype we built safety light system that can be controlled by installing an external switch on the wheelchair. For Prototype II system will be controlled from already existing wheelchair controller.
  • measurable things your Prototype II should be able to do: improve night visibility with the headlight, improve safety in the traffic with the safety lights, slim design, it will be a plug and play system.
  • Anticipated cost: $500-$1000

Timeline:

date process and goals comments
April 6
  • all components are in. Start initial playing with components, figuring out how they work.
  • continue experimental programming learning to use Arduino microcontroller
  • complete interviews with target consumers/consumer groups
 
April 13
  • initial Arduino and DX programming complete
  • skeletal structure complete
 
April 20
  • hardware and software working together, although perhaps not robust yet
 
April 27
  • prototype completed, working, report submitted
 

Materials Needed:

qty item with link unit cost comments
8 shift register $1.50 any shift register OK
1 arduino uno $30 any Arduino OK, including older Arduinos
1 DX-bus cable $10 cable for the wheelchair controller
1 Resistor assortment $7.21 we don’t need this many resistors, but we don’t know what we need yet.
1 DX card TBA we need to contact the company first to inquire the price
 6  Led lights  $10  we will use these lights
 1  Flood light  $20  we didn’t decide which flood light we’re going to use but we will purchase from this site
 1 Lighting module TBA  we need to contact the company first to inquire the price
       
       
Team X – Prototype II: Wheelchair Curb Detector

 

Description of Idea:

A system for a motorized wheelchair that will warn the user and automatically stop the wheelchair if a curb is detected infront of it.

Description of Prototype:

Our second prototype will be to interface the curb detector system with an actual motorized wheelchair. The system will need to be able to run off the battery of the system. Determine how the wheelchair is controlled by the joystick and implement that into our system. We want to be able to stop the wheelchair automatically. We want to do this by  interfacing with the joystick to reset the system when the wheelchair automatically stops due to the system detecting a curb.  The user will then let off the joystick returning it back to a neutral position to reset the system , this make sure that the user knows that there is a curb or dropoff. Also an audible alarm will be triggered for a second. We currently thinking about using a switch or potentiometer to let the system know that the joystick is forward.

  • The system will check for a large change in distance
  • The system will cut power to the motor to stop the wheel chair
  • The user will let off the joystick to reset the system to gain back power to the motor

This second prototype will differ from the first prototype by actually interfacing the system to a motorized wheelchair instead of a RC car. Since the first prototype could consistently detected a curb we decided to move on to an actual wheelchair. This a major step in our design process. We need to figure out how a motorized wheelchair is controlled by a joystick and use that information for our system. We want the joystick to reset the system when a curb is detected when the joystick is returned to a neutral position from the forward position. To move to our next phase we need to get a wheelchair. We replied to Greg Carpenter on the forum and hopefully the wheelchair will still be available.

The wheelchair curb detector should be able to:

  • Detect a large change in distance
  • Send a signal to cut power to the motor
  • Stop the wheelchair safely. Not too abruptly so that user  doesn’t get whiplash or falls out of wheelchair.
  • Alert user with an audible sound or a LED
  • Reset the system by returning the joystick to a neutral position from the foward position

Anticipated cost:

  • $30.00 for arduino (we have)
  • $54.00 for tw0 IR sensor (we have)
  • $5.00 for a heavy duty relay
  • $16.00 for gooseneck to attach sensors to wheelchair 
  • $4.00 for potentiometer

We need to research and experiment with different or higher end  sensors for our system and determine how the system will know when the joystick is forward.

Timeline:

date process and goals comments
April 6
  • get a motorized wheelchair from CPRF
  • continue to tweak code for our system
  • research better sensors
 
April 13
  • figure out how joystick works for wheelchair
  • attach sensors to wheelchair
  • determine a way to let arduino know that the joystick is forward
 
April 20
  • system should be interfaced with wheelchair
  • joystick should be able to reset the system
 
April 27
  • prototype completed, working, report submitted
 

Materials Needed:

If you are needing EECS to provide materials for you, list them here. We can then work out how to obtain these with our reimbursement policy:

qty item with link unit cost comments
2 http://www.sweetwater.com/store/detail/Gooseneck13?utm_source=none&utm_medium=PPC&utm_campaign=none&gclid=COHD24TqjK8CFYcUKgodhQQT8w 6.99  
1 http://www.amazon.com/AMERICAN-TERMINAL-ER-1200-Economy-Relay/dp/B00438F6DG 5.76 shipping not included