Background

It is a requirement to complete a final project in order to graduate from fab academy. AT the beginning i had three potential project ideas and i was hoping to work on one of the as my final project. All my ideas are based on their potential market available in Nigeria and the feasibilty of making more of them after my FabAcademy training. the projects are

• Waste bin seperator
• Thumb print control locker (TouchGuard)
• Art carving of map of Nigeria

At the end of The day i decided to work on TouchGuard which is a thumbprint based locker system and i am really looking forward to making it come to reality.

TouchGuard

A locker or small cupboard is often used to keep/store posessions. In various lab a locker is used to keep some useful files or components for saftey. Most at times key to the locker is shared between few selected individuals for accessing it. However Two problem arises from such situation: The lock cylinders often gets spoilt and needs to be changed The key can get lost and cylinder might need to be changed in other to get key replacement Anonymous person can access locker contents if they get the key even without authorisation To solve these issues a digitalise locking system can be made with a thumb print sensor that can only allow registered users access to contents and also solve the issue of missing keys or cylinder replacements The locker will be made of wooden frame, and will have the following functions: Lightening with LED on the inside a user interface housing the thumb sensor and display

SYSTEM DIAGRAM

Task to be completed

1. Integration of all sensors and actuators
2. Coupling of electronic box
3. Integration of electronic box to wooden box

1. Integration of all sensors and actuators
2. Design of electronic box
3. Coupling of electronic box
4. Integration of electronic box to wooden box

I did two versions of my final project, both similar in operation and design but different size. One is to be kept at fablab kannai and the other at Abuja Fablab 1.0

Version 1

I will be discussing the different aspect of this project under the following headings:

1. Box (body) design
2. Control box design
3. Electronic design

Box (Body) Design

The body of my final project is made of wood hence i used a large CNC for cutting out the different parts before assembly. For details on how the processes were carried out, you can consult my Computer controlled machining assignment. The box is of the following dimensions:

• Height = 500mm
• width = 400mm
• Breadth = 400mm
• material Thickness = 12mm

1. Design using fusion 360 and export of parts faces using shaper tool plugin.

2. Cutting using CNC Router ZN1325 machine

3. post procesing and Assembly

For details on how the processes were carried out, you can consult my Computer controlled machining assignment

Control box design

The control box is made up of plastic, i used ender 3 pro 3D printer to print the casing by following the processes below:

1. 3D design/modelling on fusion 360

2. STL slicing on cura slicer software
3. 3D printing using:
   • Black PLA fillament
   • Ender 3 pro printer
   • Infil 20%
   • profile 0.2
   • hot end temperature 205 celcius
   • bed temperatuer 60 degree celcius

Version 2

Similarly to version 1 I will be discussing the different aspect of this project under the following headings:

1. Box (body) design
2. Control box design
3. Electronic design

Box (Body) Design

My version 2 box design follow similar processes and more information about it can be found in my week7 assignmentpage. The following were used:

• wood (MDF)
• Wood size (2440mm by 1220mm)
• Thickness(16mm)
• Machine used(Shopbot)
• size of design (1100mm x 400mm x 400mm)

I then did the toolpath generation, cutting and assembly as shown in the pictures below.

For details on how the processes were carried out, you can consult my Computer controlled machining assignment