Jose Alegria - Fab Academy
Applications
and Implications
Assignment
wHAT iS THE ASSIGNMENT ABOUT?
Propose a
final project masterpiece that integrates the range of units covered.
Applications and Implications
1.
What it will
do?
The
project consists of a pluviometer that whenever there is movement within the
interior bucket, it will be interpreted as rainfall. This will alert the users
to allow them to react accordingly.
2.
Who has done what beforehand?
Within Fabacademy:
-
MeteoFab: Alberto López (Fablab Barcelona) 2019
Super local weather station comprising
wind gauge, rain gauge, thermometer, and humidity sensor. Works by collecting
data and displaying information through an LCD screen.
- Window
Opener: Bergþóra Ólöf Björgvinsdóttir (Fablab Vestmannaeyjar)
2018
Device with air quality
sensors that, when reaching preset parameters, would open a window.
Outside Fabacademy:
There
are several commercial options, using different types of actuators with prices
ranging from 400 USD to 1 000 USD per window, these are part of whole home
automatization systems. They are not available in every country (i. e. in Mexico), though.
3.
What will you design?
The project is divided into three sections where
I will be designing the following:
-
Pluviometer moving parts: bucket,
main pin and secondary pin.
-
Pluviometer case:
-
Electronics: Main and secondary
board.
4.
What materials and components will be
used?
For 3D printing: ABS and resin.
For pluviometer case: 3 mm acrylic sheet
For electronics: Capacitor, Regulator, Pin
headers, Resistors, Microprocessor (ATSAMD11C14A), LED, Copper Clad PCB.
5.
Where will they come from?
For
3D Printing from the printer’s official supplier.
For
the pluviometer case acrylic: local construction materials store.
The
electronic components:
-
Photo interruptor:
Local electronics store
-
Every other component: Digi-key
6.
How much will they cost?
Main Board
|
Part |
Device |
Description |
Value |
Qty |
Price |
USD |
|
1 |
Capacitor |
|
1uF |
2 |
0.77 |
1.54 |
|
2 |
Regulador |
IC REG LINEAR 5V 500MA
TO252-3 |
5V |
1 |
0.60 |
0.60 |
|
3 |
PINHD-1X04_2.54-SMD-90° |
PIN HEADER |
|
1 |
0.17 |
0.17 |
|
4 |
Regulador |
IC REG LINEAR 3.3V 1A
TO252-3 |
3.3V |
1 |
2.03 |
2.03 |
|
5 |
Resistor |
Resistor |
0 |
3 |
0.26 |
0.78 |
|
6 |
Resistor |
Resistor |
4.99K |
2 |
0.26 |
0.52 |
|
7 |
Resistor |
Resistor |
1K |
1 |
0.26 |
0.26 |
|
8 |
Resistor |
Resistor |
10K |
1 |
0.26 |
0.26 |
|
9 |
Microprocessor |
ATSAMD11C14A |
|
1 |
1.78 |
1.78 |
|
10 |
LED |
LED |
|
1 |
0.05 |
0.05 |
|
11 |
Placa 10x6 |
Copper Clad PCB Laminate Circuit
Board, Single Side, 4 x 2.7 inch |
|
1 |
0.69 |
0.69 |
|
Total |
|
|
|
|
|
8.68 |
Secondary Board
(Motor)
|
Part |
Device |
Description |
Value |
Qty |
Price |
USD |
|
1 |
Stepper
Motor Driver |
Pololu
A4988 |
|
1 |
4.45 |
4.45 |
|
2 |
Pin Header |
PIN HEADER |
5V |
1 |
0.60 |
0.60 |
|
3 |
Placa 10x6 |
Copper Clad PCB Laminate
Circuit Board, Single Side, 4 x 2.7 inch |
|
1 |
0.69 |
0.69 |
|
Total |
|
|
|
|
|
5.74 |
Secondary Board
(Sensor)
|
Part |
Device |
Description |
Value |
Qty |
Price |
USD |
|
1 |
Optointerruptor |
ITR8102 |
|
1 |
0.75 |
0.75 |
|
2 |
Resistor |
Resistor |
499 |
2 |
0.26 |
0.52 |
|
3 |
Resistor |
Resistor |
4.99K |
1 |
0.26 |
0.26 |
|
4 |
Placa 10x6 |
Copper Clad PCB Laminate
Circuit Board, Single Side, 4 x 2.7 inch |
|
1 |
0.69 |
0.69 |
|
Total |
|
|
|
|
|
2.22 |
Pluviometer Case
|
Part |
Device |
Description |
Value |
Qty |
Price |
USD |
|
1 |
Acrylic Case |
Acrylic Sheet 81.3x111.8
cm 3 mm |
|
0.12 |
30.91 |
3.71 |
|
2 |
Bucket |
ABS 3D Printer Filament |
|
14.2 |
0.05 |
0.74 |
|
3 |
Main Pin |
ABS 3D Printer Filament |
|
1.1 |
0.05 |
0.06 |
|
4 |
Secondary Pin |
ABS 3D Printer Filament |
|
1.4 |
0.05 |
0.07 |
|
Total |
|
|
|
|
|
4.58 |
Motor base and window
actuator (Future Development)
|
Part |
Device |
Description |
Value |
Qty |
Price |
USD |
|
1 |
Motor |
NEMA 23 Step Motor |
|
1 |
24.22 |
24.22 |
|
2 |
Motor Base |
ABS 3D Printer Filament |
|
11.3 |
0.05 |
0.59 |
|
3 |
Acrylic Rack
and Pinion |
Acrylic Sheet 81.3x111.8
cm 3 mm |
|
0.1 |
30.91 |
3.09 |
|
Total |
|
|
|
|
|
27.91 |
7.
What parts and systems will be made?
-
Pluviometer case
-
Pluviometer moving parts
-
Electronics boards
8.
What processes will be used?
-
Pluviometer case: Laser-cutting
-
Pluviometer moving parts: 3D Printing
-
Electronics boards: Milling and
welding
9.
What questions need to be answered?
How I will be fixing the different components to
the case.
What will be the code to transform from physical
motion to an electronic signal.
10.How will it
be evaluated?
I will be testing the pluviometers work by
defining three scopes:
-
Design: Everything must work as an
individual component, the case must be press fitted, the moving parts should
move freely and the electronics must do what it is
programmed to do.
-
Assembly: Everything must be fixed
and comprised into the case in a manner that shows a final project, not an
early prototype.
-
Ensemble: It must pass a real life test with water falling into the case, moving the
bucket, that movement being detected by the electronics boards and having an
output.
Nueval
Checklist
-
What will it do?
-
Who has done what beforehand?
-
What will you design?
-
What materials and components will be
used?
-
Where will they come from?
-
How much will they cost?
-
What parts and systems will be made?
-
What processes will be used?
-
What questions need to be answered?
-
How will it be evaluated?
2022