We have just finish week #15. It was an interesting week for me because I decided to use a new machine that wasn't part of any assignments during Fablab Academy. I had some problems but I learn a lot of the sewing process. Now, a new week has just started and it´s about working on my final project. So by now I have work on it, I think I have maybe 55% - 65%..... I hope so. As last week there isn't a group assignment to do. I'm going to focus on a design that integrates my final project. Maybe by the end of this week the percentage is up to an 80%. So, lets begin and as always hoping for the best. Join me in this week journey and see what comes up.

This week assignmets are:

Group assignments:

None

Individual assignments:

Design and document the system integration for your final project

Individual assignments

A). Design and document the system integration for your final project

In this part i'm going to document how i'm going to integrate everything I need into my project. Before I start my assignment for this week I decided to sketch the design and have a much better understanding of what I want it. I think it´s a good starting point. And just to remeber this are the components and circuit i'm going to use:

A1). Initial sketch

This first part will help me know how can I integrate all my components, like a starting point. And also will help make some changes in case they are need it. So i'm sharing the initial skethes, so lets see with what do we end up.

A2). What components I will be using?:

This are the components and pins i'm using en each one of them:

List of components and pin connection
Data from: Xiao ESP32S3	14 pins: D0 - D10, 3v3, GND, 5V	Data from: RGB Led	3 pins: + ,GND, Data
Data from: Max30102	4 pins: +, GND, SDA, SCL	Data from: LCD screen	3 pins: + ,GND, Data
Data from: Voltage regulator	3 pins: 5v, 3.3v, GND

A3). Circuit diagram

In the image i'll specify were i'm going to connect each component:

B). Design Integration

Now that I have a much better idea of my final project. I have to integrate the components in my design and specify where i´m placing each one of them and how i'm going to connect them. So, lets go step by step, in first place im going to show the design of how i'm going to assemble each component.

B1). System integration desing.

So i'm starting by making a design integration in Solidworks. This what I did:

I have to consider the design of my final project. I think is a good opportunity to make changes if needed.
I downloaded some components: Max30102, HC-SR04 and the SSD1306. I got this from: Grabcad
In the file section i'm will share the designs.
In the next images i'll show how i integrate each one of the component

B2). BHC-SR04

This is how start it. But, as I work carfully on my design I made some changes becuase I need to be carefully on how i'm going to place every component on my design.

B3). Max30102 sensor

Next I integrated the Max30102. For this part I had to consider how I was going to place it in my design. So I added some details, let me share a few things I did:

In the first image I had the first design.
I made a cut in the inside part of front of the design.
Then I move the sensor to the right side.

B4). Oled screen

Then I place the oled screen.

B5). Some changes

In this part evertything was going fine, but I wasn't sure once I was looking at the "whole picture". So I decided to make some changes, for example:

Expand design size
Move the components

B6). Leds

For the next part and once I made the changes I added the leds.

B7). Back part

Then I design the back part or the bottom part. And make more changes as I assemble each part. The changes I made were:

Round edges.
Making sure both parts join correctly.
Add details to the front part, the space for the leds.
Add the space were i'm going to connect the xiao.
As you see, the final design was kinda different from the begining one.

The changes I decide to make were in design not in functionality.
Try to take advantage of the space in the front part.
I also consider having more space to move the components and make the changes I need it.
One of the changes was to take out the gap, this was just to put stuff like keys.
I expand the base a few cm, considering I move the component.

C). Cable integration

Now that I have the design integration, I can consider the wiring part. In this section I'll show how I am going to connect every component and not make a mess. I need to be careful and decide how to connect everything for my final project.

C1). Connecting components

Focusing in my design i'm showing how will I connect the components to the Xiao.

a) First image --> Conection between oled and xiao.
b) Second image --> Conection with max3012 sensor.

c) Third image --> Conection of the HC HC-SR04 sensor. (This is going to be for a second phase of the Medilamp)
d) Fourth image --> Conection to the push button.

e) Fifth image --> Table of cables, representation of colors and where is conected.
f) Sixth image --> You can see the whole conection of my project.

Final part

Files

In this part i'll share the designs I downloaded from grabcad and my final design

Here are the files of my assembly

Design: Assembly

Conclusions and recomendations

What did I learn in this week?

As always, document, document, document it's very important that you don't wait until last minute, so do it as you go.
As documentation, compress images and videos as you go and make sure the formats are the required.
Get to know the materials, equipment and components.
This week is a good opportunity to make some changes, for me it show me some details I wasn't considering in my design.
Remember to ask people who have much experience.
Take your time in the design, don't rush because you have to think 3 or 4 steps ahead.
Put yourself as the final user and analyze every detail.
Something that was very useful for this week was to draw the sketches before designing it in Solidworks.

Welcome to Geo´s Fab Academy 2024

W16: System integration