Week 10: applications and implications

individual assignments

Propose a final project masterpiece that integrates the range of units covered, answering:

Your project should incorporate 2D and 3D design, additive and subtractive fabrication processes, electronics design and production, embedded microcontroller interfacing and programming, system integration and packaging.

Where possible, you should make rather than buy the parts of your project

Projects can be separate or joint, but need to show individual mastery of the skills, and be independently operable

This is section is from 2020

and my original idea for final project

for this assignment you can go to the final project tab on the menu or here to see what is all the fuzz about

in here i'll just try my best to answer the questions on the assignment directly like a regular quiz

    1.- What will it do?

in order to answer this completly i should mention my problem

so, i've been working now as a tech advisor in our fablab and' i've noticed the lack of order in the user that has access to the machines in our laboratory

we are located inside an university campus so the laser cutter and 3d printer and such are aviable for the students at our university

only those who has taken the propper course can use the registered machines

so, this final project is an assistant for the fablab tech advisor personel.

in order to allow students to use the machines and automatically register their uses

    2.-Who's done what beforehand?

this i already answered in week 1 i belive, before starting academy 2020 i was looking for inspirations and ideas and i came across something like this my final project here philippe's final project was aiming to help the fab tech advisors with something similar like i'm proposing he and i shared similar ideas of functionality

    3.-What will you design?

philippe's final project used a solid state relay (the kind that is used in heating elements in thermoforming machines) to switch the control signal into power supply and i aim to use a magnetic contactor for 3 phase machines like our axyz router, so philippe's case won't help me in my design i have to make it a little bigger to store all the components in a case i'll have to redesign all of the housing elements

    4.-What materials and components will be used?

i'll try to mantain all of the materials as common as posible in order to easy the replicability i think i'll stay with acrylic and MDF for the laser cutted parts and PLA for the 3D printed ones

    5.- Where will come from?

i don't quite follow this question but i'm getting it from our local vendors.

we already have some components in our lab for the electronics and MDF and PLA for the mechanic assembly parts.

    6.-How much will they cost?

i still do not have this answer yet but i can make some predictions.

    (1)control board
    (1)wifi board
    (1)relay board
    (1)power supply
    7.-What parts and systems will be made?
    housing
    control board
    relay board
    8.-What processes will be used?
    +i plan to use additive manufacturing for the wall mountin brackets
    + and the rest of the housing usin 3mm mdf and 3mm acrilyc laser cutted
    + some milling on the roland for the pcb's of the final assembly
    9.-What questions need to be answered?

here i need some info about in how to use propperly a wifi board for conectign to a local server in the campus and comunicate to the data base on sql language

    10.- How will it be evaluated?

i will use an existing data base with my data as admiinistrative personel of the university and try to use a machine (laser cutter) and read if any value has been added to the data base

project plan

this is the draft of how the progression of the project should be implemented

    1.-Create a sketch of the general design
    2.-Create a bill of materials to use
    3.-Design a good housing for the electronics and the wiring
    4.-Program an attiny44
    5.-Make a pcb with a push button and a LED and make it blink with the atTiny whe the button is pressed
    6.-Make a relay PCB with some headers and use it to turn a light bulb using the atTiny button PCB
    7.-Attatch a rfID shield to the atTiny board and read some ID's to get the data out of them
    8.-Control the light bulb using the rfID data without the data base just granting acces with the data of the code
    9.-Integrate the mySQL database locally on a pc attached to the atTiny to read data from the database and control the light bulb
    10.-attatch a wifi shield to the atTiny board to read the mySQL data base from a locally served host with a static IP

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Smart curing station

On week 13 of the fabacademy i decided to change my final project idea.

so here again i will answer in the week 10 assignment for implications and applications regarding the new final project idea

1.- What will it do?

it's Function is to cure SLA prints from 3D printers

2.-Who's done what beforehand?

I haven't been able to find someone from prior years on the fabacademy archives to attempt to do something similar.

But there are several examples although may be not quite as elaborated.

Because the ones that i have seen on the internet are a lot simpler.

3.-What will you design?

I'll design a nice housing from MDF and the electronic circuits

4.-What materials and components will be used?

5.- Where will come from?

6.-How much will they cost?

in order to answer #4, 5, and 6 i will make a list here.

Some of the parts like electonics components, MDF boards and PLA we already have them available in our FabLab.

But, some stuf like mirrors and bluetooth shield i'll be purshasing them promtly.

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7.-What parts and systems will be made?

Im making the PCBs for the curing station myself and the housing is made mostly with CNC routing and 3D printing except for the mirrors.

8.-What processes will be used?

    Electronics Design
    3D printning
    CNC routing
    Laser engraving
    application programming

9.-What questions need to be answered?

i need some info about how to comunicate a bluetooth module to an aTtiny procesor.

10.- How will it be evaluated?

I will cure real prints in our FabLab using the presettings i will integrate in the application. and compare them to a piece cured in sun light.

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After my final presentation on 2021

After the final presentations on 2021 at last i can push an Update on what happend since last pushed anything here.

HERE i will summarize what happend along the way with my final project.

But for this assignment i will Summarize all of this assignment again.

First the Name of the project is SMART CURING STATION.

Then the description of the final project is an easily replicable Alternate current powered Curing station for curing photosentitive resin prints (like the form 2 or the elegoo mars).

The reason for this to be needed is that we could finish the 3d prints even in the night or a rainy day when there's no natural UV light.

a screenshot of the bom

BILL OF MATERIALS

under resolution

then the comertial products outhere are quite expensive about $699.00 USD plus taxes LIKE

as you can see in the Bill of materials for my final project. I only needed about $85.00 worth of materials

To make a machine that's roughly one eight the cost of the comertial product.

The designs

As is said i'm an electromechanical engnineer but i focus mostly on mechanical design tools.

therefore i designed averything that i could posibly do.

  • chassis designed
  • Mechanisms
  • (Hinges, Fixtures, Shaft couplers, Motor Brackets, Components housings) designed
  • ECAD
  • Main Board designed
  • Power Supply designed
  • Button Pad designed
  • Components
  • transformer bought
  • UV Lamp bought
  • LCD display bought

    • The versions

    V1

    The first version of my final project helped me as a draft.

    it was based on the shape and form factor of an ultimaker 2 that we have in our lab and the shape really resonated with me.

    if you can read this i messed up
    in this one i intended to use some fluorescent lamps. But Unfortunately one of them broke. and instead of some fragile glass lamps i choose to go with an UV LED lamp that i found locally.

    in the project developement assignment i talk more about what changed from v1 to v2

    V2

    The Second version of my final project helped me to choose materials.

    it was based on the shape and form factor of a Form 2 printer that we have in our lab and my instructors challenged me to improve my draft

    if you can read this i messed up
    in this version y intended to copy the bending on the top cover using 6mm acrylic.

    in the project developement assignment i talk more about why this was a bad idea.

    V3

    The third and final version of my final project.

    it was based on the shape and form factor of a Form 2 printer that we have in our lab but instead of folowing the shape of the top cover i choose to change the direction of the bending

    if you can read this i messed up
    finally the v3 was the last of my designs

    in the project developement assignment i explain my conclusions about this version's design flaws and how to overcome them.

    The Materials

    as i said before version 2 of the shape helped me to define the materials i used in this project

    in the project developement assignment i explain why i choose those materials.

    HERE you can download the BILL of Materials Below.

    thanks to my global instructor luis carvao

    i've came to notice that this iframe only works for me i usually browse using firefox. but when i write the code on brackets the iframe seems to not work.

    i belive this to be because of chrome but i can't be sure.

    So here is the bill of materials in pdf. also downloadable from HERE

    a screenshot of the bom

    Most of the materials were available in our lab but specific components as the UV LED's have to get them myself from online stores.

    as stated in the BOM the entire project is about $85 .

    What parts and systems will be made?

    I've already pushed my design and fabrication files on Final project page under the CAD/CAM category for all the systems i've made.

    What processes will be used?

    i used the laser cutter as sustractive and 3D printing as aditive process of manufacture

    i intended to use Molding and casting for one pieces. However i messed up the mold and had to redisigned it in order to test it but i came short in time for the presentations.

    so i decided to cut it out in order to priorize embebed programming and electronics systems integration.

    What questions need to be answered?

    could you cure photosensitive resin using only the power of a simple UV nail curator?

    How will it be evaluated?

    Use it to cure Something.

    Unfortunately i did not documented the curing process of a 3d printable gag i found on thingiverse.

    if you can read this i messed up

    HERE you can get the same file

    instead i used une cubic centimiter cubes in order to check how much time is needed to cure the resin in my local area (obviously this will change acording to how much UV light radiation is during the day and the region.

    if you can read this i messed up i made a simple 10mmX10mmX10mm extrusion on solidworks you can download it from HERE if you can read this i messed up
    this is just the slicer called preForm if you can read this i messed up
    this is just the aproximate time and volume (including supports).