Desgining Battery Holder and Type of Battery we are using!

Design of the Battery Holder using Solid Work

We design a Battery holder that look similar to the Frame Holder except that it does not block any of the front view and no support from the back . The Battery holder also have slide cover on the front for the cover to slide in and prevent the battery from dropping out.

4 Cell AA Battery

For the type of Battery , we will currently be using 4 cell AA battery.

Creation of Frame

Once our most of components were mounted on the PCB, using the same program and tools for 3D printing, we started designing the frame for the PCB to be mounted on for the locker.

A simple frame design was made.

frame printing in progress

frame complete!

PCB Complete!

We finally managed to finish create our parts and routing for device PCB using the EAGLE program.. It was quite difficult as there were many components and routing required, and we kept the device as small as possible..

Schematic Parts for device

Board Routing design for device

Now that we have completed our PCB design, it will be sent for fabrication and it would take a few days for it to be ready. Meanwhile, we start on our framing design of the device on the cabinet.

Making of the Password lock system

Now done with the servo-lock, we moved on to do the second part, the Password lock system.

To start off, we needed to use the EAGLE program to design the device..

Cadsoft Eagle

based on this 7-Segment LED Display, to make the device schematic

Servo-lock Mechanism Complete!

Finally printed all the parts for the servo-lock mechanism, we put them together..
Unlike the old keylock, the servo-lock mechanism will be concealed inside the locker, so to prevent tampering, and will be directly controlled by a PIN lock that will be mounted on top of the locker.


This was the old keylock mechanism(requires key)

The new servo-lock, with parts already put together..

3D Printing!

ReplicatorG

Using ReplicatorG, we imported our .SLDPRT files and virtually position 

the model designs on the board for printing.

Model servo bracket postioned on the board in ReplicatorG.

Once we were done with SolidWorks and ReplicatorG,

we were finally able to start printing the 3D parts!

Preheating before the 3D printer start to print

The 3D printer at work..

The final product!

SolidWorks 3D modelling

SolidWorks 

This is the recent development we have done on our project , using a program called SolidWorks,

we were able to make a 3D design of parts need for our project and using a 3D printer to make them.

We designed the bracket which is to hold the servo in place inside the locker.

This is the design for the arm that will be mounted on the servo to control the lock.

After we had done with the designs, we save our work as '.SLDPRT ' so as to use another program, ReplicatorG, to prepare our designs for printing..

Planning & Designs

We came up with this rough design plan with some help by our teacher.

Rough sketch of where is servo will be placed inside the locker.

A more detailed design sketch with accurate measurements and placement.

UNLOCKED

LOCKED

The default locking mechanism in the pedestal was rather simple yet efficient. A thin metal bar on the inside of pedestal locks all the drawers when it is pulled up by the mechanism behind the keylock. With this, we could simply just replace the keylock with a servo to control the locks.

In the the design plan, we thought of ideas and solutions to where and how we could position the keypad password lock and the servo for the whole thing to work properly in the pedestal.

Now with most of the planning done, we are moving on to the next phase in this project..  making the servo-lock mechanism.

The Arrival of our Drawer

Our drawer has arrived! We immediately begin inspecting the drawer inside and out and started planning on how we could modify this into a 'electronic password locker'.

Drawer found!

After searching for the cabinet for some time , we finally find it near our school .
It was pretty much what our teacher and us wanted and we bought it at a decent price ($138).
It was quite solid , and we will be able to start our project the very next day

Electronic Password Lock drawer

                                       Electronic Password Lock drawer


Objective: Build a electronic password lock system for a drawer to replace the old keylock.


 Reason:
Keylocks requires designated keys to open the drawer, without the key there is no other way the open it safely. It is more complicated if there are multiple users as more keys would be needed.

However in the case of the electronic password lock, user(s) only have to know a simple set of numbers to open the drawer.

Security is also more flexible with the electronic password lock. User(s) may change the password easily, without having to change the entire lock.