Computer Controlled Machining

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Week 8

HERE YOU CAN DOWNLOAD FILES OF WEEK 8

My inspiration for this weeks was my exploration on assignment 3 and how to make structures form folding. The technique used for that design, for bending the wood, was wetting it and bending it slowly over a mold. I found a different approach using slots and plywood, and decided this would make the project for learning to work with the shopbot and flexible wood.

Machine: Shopbot
Softwares:
-Rhino 5 -ShopBot 3 -PartWork 3.0

Process .

HERE YOU CAN SEE THE PARAMETERS FOR CARDBOARD IN MY WEEK 3
step 1 : After importing the DXF design file in v-carve, the first step is to edit the document size. Document size and thickness setting should correspond with the size of the wood. And set the Z Zero to the bottom. (it's a important choise, because you can control how deep the shopbot will cut into the sacrificial layer)

step 2 : In the toolset on the left pick the 'draw circle tool (create vectors). Use this tool to draw circles a screw holes (radius 9mm). Now you can design where the screws should be plced , without colliding with the other milling paths of the shopbot. Also the tool 'move selected objects' (transform objects) is also a useful tool. This tool will allow you to move a selection from a relative or absolute (controlled) position.

step 3 : On the right of the screen there is a tab where you can create new toolpath. First select the lines in the design that will represent the new toolpath (like all the drill holes) and then select in the tab toolpaths > pocket toolpath (toolpath operations).

step 4 : First fill in the cutting depth. To pre-cut where the screws should be, the cutting depth should be around 5 mm deep. And important to select the right tool. In my case I will cut the whole design (all the toolpath's) with a 1/4 Up cut . Give the toolpath a proper name and click on calculate. Then continue until the whole design has a appointed toolpath. For regular cutting, use the profile toolpath. The cut depth should be a little bit deeper then the actual wood is (so my wood is 15 mm thick, and I set the cut depth to 15.5 mm). In the machine vector option, be aware of the difference between outside/inside/on option. It does make a difference in how the tool will follow the toolpath. When working with wood, it is always wise to have tab edited into the toolpath. This will prevent finished cutouts to go 'flying'. Small tabs of wood keep the cutout piece connected to the rest. Also editing in ramps are useful. Instead of driving/forcing the milling head straight into the wood, it will be lead down a ramp. When done, name the toolpath and click on calculate.
step 5 : When done editing all the toolpaths, it is wise to cheack if all the settings are correct before exporting (button save toolpath).And it's importand you create 3 different folder: drill cut folder, pocket folder,then intirior folder and extirior folder. So you will cut separatly each folder.

Molding and Casting

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Week 9

HERE YOU CAN DOWNLOAD FILES OF WEEK 9

This week's assignment is comprised of a four-part process to fabricate a 3D object:
1. Use a CNC mill to digitally fabricate a mold out of wax
2. Create a negative of the mold with a flexible rubber
3. Use the flexible rubber as the mold for the final part
4. Cast the Final Part

Machine: -Roland Modela MDX-20 milling machine
Softwares:
-Rhino 5 -Modela -Fab modules

MOLDING .

SOFT MOLD

For the project of "modulo cells "I will use a soft mold so we need to follow the next steps:
- Prepare all the material that will need for the process (mix material and safety equipment).
- I use for the soft Mold process PMC®-121 - Easy To Use Urethane Rubber .
- For the mix, the proportion it has to be equal on each part 1:1 (volume).
- Once the rubber is mixed (Dry and Wet), is time to put it carfully into hard mold until the material reaches the top of the mold.
- Try to take it out all the air inside the mold, for this you can hit “slow and very carefully” the molod against the table.
- You have to wait until next day to take out the final piece .

MOLDING-TIPOLOGIES

modulo ludico plus from Arely Amaut on Vimeo.

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Input Devices

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Week 10

This week's assignment is : measure something, add a sensor to a microcontroller board that you've designed and read it.
As we already know fisrt Sensors:
A sensor is an electronic device that takes data from the real world and transforms them into electrical quantities. In total we will fabricate 3 btw sensors, then we will appointing and detail the list of components for each one.

This chart shows the equivalence of AT Tiny 45 and 44 Microcontrollers Pins with Arduino UNO pins. It will be helpful when developing the code to program the microcontrollers by using the Arduino IDE.

Machine: -Roland Modela MDX-20 milling machine
-Soldering Iron
Softwares:
-Arduino -Fab modules -Python

You have to go to input devices class week 10 for all the fyles input devices

You need the PNG files to fabricate yours boards.
Electronic cards manufacturing:
Tools and materials:
- 1/64’’ milling cutter
- 1/32’’ milling cutter
- PBC
- Traces for PCB
- Modela MX20
- Fab Modules
- Welding station
- Electronic components, detailed for each case

1.- LIGHT-REFLECT SENSOR

PCB Hello, Light-Reflect
1 FTDI Serial connector
1 2x3 Pin header
1 10k resistor
1 1k resistor
1 49,9k resistor
1 1uF capacitor
01 Microcontroller ATtiny 45
01 Silicon Photo Darlington

2.- SOUND SENSOR

PCB Hello MIC
1 FTDI Serial connector
1 2x3 Pin header
5 10k resistor
1 1k resistor
1 0 resistor
3 1uF capacitor
01 Microcontroller ATtiny 45
IC OPAMP GP 24MHZ RRO TSOT23-5
01 MIC COND ANALOG OMNI -38DB

3.- MAGNETIC SENSOR

PCB Hello MAG, magnetic field

1 microcontroller AtTiny45
1 capacitor 1UF
1 resistor of 10k Ω
1 IC SENSOR HALL EFFECT SOT23W
Headers

4.-VIBRATION

PIEZO For the project of "modulo cells "I create differents tipologies of plastic folding pattern .Also I use Molding and casting with Circuits. So I turn on the led with the vibration in the piezo.
1Piezo
1Button
1Capacitor
1Diode


PROGRAMING Input Device Examples - in C

Tutorial for week 10 input devices

FIRST I USE ARDUINO IDE TO PROGRAM the microcontroller
/ MY HELLO.MIC/HELLO.REFLECT/
1.Connect the FabISP to each sensor PCB and to the PC.
4.In the case of the examples, copy the file code with C extension in the IDE, compile and run the program.
Contents:
ATtiny 45
Ubuntu Users - Install Tkinter
Mac Users - Install PySerial
Run The Python Program (Mac) USE MAC

Your serial port may be different depending on your computer. You need to find the port for your computer. To find your serial port, with the board attached:, in terminal - type
ls /dev/tty.usb*

Then use the port you are given to run the python program. For example - when I type "ls /dev/tty.usb*", I get "/dev/tty.usbserial-FTF53NJC". So I would type:

python hello.mic.45.py /dev/tty.usbserial-FTF53NJC
Run The Python Program (UBUNTU)
USE LINUX sudo python hello.reflect.45.py /dev/ttyUSB0



HELLO.MAG_test_

week.10 Fab Academy 2015 fablab Esan from Arely Amaut on Vimeo.

WORK IN PROGRESS

For our group project we want to make a interactive Fab Lab paint wich active with the sound of the ambient sound and music , this will use the /Hello.Mic board/ . We will multiple the 3 pins out of the ATtiny45 to generate different combination of the light.

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Output Devices

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Week 11

The idea of this week is to create a board that I can use for my final project. Now the main goal is desing a flexible circuit board -molding & casting circuit. I need to try with the vinyl cutter (ROLAND) the idea is to create an Arduino in the paper and all the board that I will nedd, inputs and outputs.So I started with my HexoArduino. I took reference fro PaperArduino they use conductive pen and a special conductive glue for the components.But I will use copper vinyl for this week.

/Previus experiments/

/Diagram Arduino Pro- Fabdunio-Folduino/

Machine:
-Roland Modela MDX-20 milling machine
-Roland Vinyl
Softwares:
-Rhino 5
-Modela
-Fab modules
-Eagle

DESING HEXODUINO

VINYL CIRCUIT.

Paper Circuits

I use this example from electret-microphone.Because was I week full of learning this circuit is in progress. To program ATTINY45 I design a board in Eagle after programming I will take off and put on the final paper circuit .
Here is the example that I use from JEI QI.

COMPONENTS(MICROPHONE CIRCUIT-LEDS(OUTPUT)
attiny45 or attiny85 microconttroller electret microphone (available here) 10 kOhm resistor (not the 50k specified in the photo!) LEDs 3V coin cell battery (CR2032 or CR2016)

Then I try a different way for programming.I use this tutorial.

programmin with Arduino IDE, you have to follow this steps to use the arduino as isp.

I recomend you to prove with a blink if you microcontroller is alredy program.Then I program with the code "Electret microphone card"

After programming the ATtiny I solder into the my paper circuit

In conclusion I could make ir work. You can use sound from music outside and see the paper circuit reacts with different patterns in the led as you see in the video. Close

Composites

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Week 12

HERE YOU CAN DOWNLOAD RHINO FILES FOR THE COMPOSITES

The idea of this week is to design a mold for the composites. For this assignment I would like to make a flower pot.

1.PROCESS OF 3D MODEL :
HERE YOU CAN DOWNLOAD FILES FOR SHOPBOT https://drive.google.com/file/d/0ByEX3z00IIU3a3U5Uk9xZnBJS00/view?usp=sharing">HERE YOU CAN DOWNLOAD CRV FILES

2. It is necessary to use fabric for structure your composite. As I want to make a container.

3. FINAL PROCESS : here you need the fabric and the mfd mold.

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Networking and Communications

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Week 13

The assignment for this week was to build a wired &/or wireless network with at least two nodes. There are a lot of kind of communications but at this moment I am especially interested in the communication wireless by bluetooth.I would like to see:

-The data of our input sensors of week 10 by the Bluetooth.
-How we can interact with our cell phones to Bluetooth and ATtiny45
-How we can interact from our cell phones to Bluetooth and an output like a Servo Motor

So for my final project I want that people could interact with my installation by controlling the movement of the "fold cells" and this will produce the communication between them.

DATA FROM BLUETOOTH TO CELL PHONE
The module I used is Barduino board. Is a small board with the same Arduino Uno microcontroller, Atmega328P.

The application I used to see the data from the bluetooth is: BLUE TERM_Terminal emulation (VT100 terminal emulator) to connect to any device with a serial port using a Bluetooth-serial adapter.You need a Bluetooth-serial adapter.

SERVO MOTOR APPLICATION
I recommend to rename your Barduino. Follow the next.
My idea is to make an application to control the movement of the servomotor this will give the possibility of interaction to my installations.So now How to do it? Really it was nice to learnd this free program calls

Tutorial for week 10 MIT APP Inventor
"MIT App Inventor is a blocks-based programming tool that allows everyone, even novices, to start programming and build fully functional apps for Android devices. Newcomers to App Inventor can have their first app up and running in an hour or less, and can program more complex apps in significantly less time than with more traditional, text-based languages." As you see, it is a good way of learning programming. Here I show you my program, as I see it woorks like puzzle.

2.Second, program yoUR arduino or fabduino.I use Arduino IDE.

3.Finally here are the diagram of connections between the /arduino-bluetooth-servo motor /you need to make everything communicate correctly.

interactive from Arely Amaut on Vimeo.

Finally I was wondering if I could use processing on my PC and connect with the Barduino and read the information in put of hello.mag. Because I am just learning programing I see this tutorial and try with the examples here. Interface & Application Programming - Processin
I change the stroke and fill. So if you see at the numbers and color one I put the magnet near to the sensor the circle pits in one color and stayed there also the the quantity number is higher.

Serial Communication
As I have already experiment and learned differents ways of communication. I decided to do something that is recommend in the week assignment, in this case the serial communication. For this, I followed Anna Kaziunas tutorial. The first thing is to mill and solder the boards (1 bridge + 2 nodes). Then program 3 boards.

Follow this Tutorial

I used LINUX - UBUNTU to program the 3 boards

Finaly I trying: Use the Serial Monitor in Arduino. After flashing boards with 3 different node numbers: Plug your bridge into your computer (with the nodes attaches). Connect the nodes with a cable as shown in the picture.

Open a Arduino IDE Open the serial monitor from the "Tools" menu > serial monitor Make sure the baud rate is set to 9600. Enter number any number into serial monitor - press the "enter". The LEDs on all the boards should light up once. After all the boards light up, the board with the number you entered into the serial monitor should light up again. The node name (ex: node 1) should also be displayed on the serial monitor. like this:

Here you will see a video of my Serial Communication. I enter different numbers and check that serial connections was working. So everything was OK ! The nodes and bridge turn on. Once I put "1" in the serial monitor every node flash then I enter different values to see the response.

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Interface and Application Programming

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Week 14

The assignment for this week is about:
Serial Communication is the process of sending data one bit at a time, sequentially, over a communication channel or computer bus. This is in contrast to parallel communication, where several bits are sent as a whole, on a link with several parallel channels.

So now I will try from two types of inputs:
- My desing hello.light
-Microorganisms and human beings

HELLO-LIGHT PAPER

I use Niel's design and take out the ISP because I want to design a flexible circuit and have the less components in it. So I program my ATtiny 45 on my paper programmer with and Arduino IDE as the week 11.
Here is the process of programing the ATtyni 45
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EAGLE DESING
I used 0.5 mm as width of the traces . I didn't use the auto-router function in Eagle, so I was in full control of the routing. The copper foil tends to twist and come loose when you have sharp angles in the design for the vinyl cutter. My design is all with round corners, to do this I placed the components a bit further apart than is usually . After finishing the lay out in Eagle I edited the traces in Illustrator to round the corners of the pads and eraser some possible short circuit.

CUTTING
I managed to pull the copper from the vinyl with the transfer paper. Settings on the vinyl cutter: force 40 and speed 0.8cm/s. and the pen force of the cutting is between 0.5 and 1. Our vinyl cutter model is Camm-1 Servo

READING with PYTHON

For Processing I changed a little bit the code from the Fab Academy tutorial
and make that only one red line appear

Microorganisms and human beings
This is my second exercise I want to learn how to read and heard the microorganisms input by Processing and Max.

1.First you need to make a sensor of the bacterial activity so there are many ways, what I used was carbon fiber . I make a roll and put a wire as a knot then insert the two sensor into the water as you see in the photograph one is the ANODO (+),it has to be at the surface and half inside, the other is the CATADO(-) it should be at the bottom of the water. You could see that there is electrical activity using the multimeter.
Now with an Arduino I will see the information of bacteria by serial read.

For this at firsT I could´nt see significan varations from serial read.So I lock in the web for a simple circuit that will amplifier my reading this was a "SOUND AMPLIFIER".For this circuit I use a OP-AMP and to resistance of 100k.
circuit

2.Now with an Arduino I will see the information of bacteria by serial read.
FILES OF MAX- ARDUINO CODES, ALL THE EXAMPLE I USE IN MAC

CODE FOR ARDUINO

3.You will need to program arduino with "GRAPHING SKETCH" I use from the library of Arduino IDE, then you open GRAPH SKETCH in PROCESSING and run.Finally you will see the information from baterias.
CODE FOR PROCESSING

4.Do the same step for Max, open a new PROJECT.
MAX code

HUMAN SOUND INPUT
I discover that when I touch the water the sound make a different so I am making circuit with it. To hear more I touch the two the wires connected to the OP-AMP so it started to sound with a higher frequency and more louder. There is also a difference between the hand that the front. I think thi is very interest because we can hear us and control things by our "sound different".

Heard the sound from the vídeo.

After all of this I wonder what I am really testing and the factors that could make change all off this I am not sure if I will use this for my final project but I am totally interest about making an interface between us and the microorganism and how we can control my artificial folding biostructures with it.
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Applications and Implications

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Week 15

The assignment for this week is about the description of your project and answer this questions

1-what will it do?
My project: Design a Folding-Biostructures
The idea that I have as a final project is to make a Folding Structure that replicates patterns from nature. The potencial of this kind of structure are many, one off them is this dynamic.

So I am designing a responsive fold , a sensible surface that interact with light, sound and body movement. So by the combination of both inputs from his environment and the interaction of other people the fold will move. Another way of interact is human body movement.For example maybe if you dance the program (processing kinect) will recognize your movements sent it to the folding so it will move with you.

For the Academy Project I will make a prototype of my installation and explore how electronics could also be flexible for example I design my paper circuits. I focused in the possibilities of the geometry and flexible materials that cut match for the folding cardboard that I will use.Also I wanted to use a simple material and add different layers of function.

2- who's done what beforehand?
Something similar what I found is a fabmate from 2014 fab academy Sara
and from other project this: "diaphanous"
.

3-what materials and components will be required?
The essential components needed are: 1.nylon
2. Cartoon,paper, mdf,plywood.
3. Silicone
4. light analog Servo or DC motors (1-3)
5. Small Battery (3)
6. Plastic tubes
8. Control Board
9. Acrylic
10.Kinect
11.Sensors

4-where will they come from?
From Lima and USA

5-how much will it cost?
The project cost up to date is nearing $120,I am using all material locally .Eventually I will use conductive ink it cost 19 dollar and Flexinol that cost 25 dollars.

5-what parts and systems will be made?
I will make the entire system, the integration of the fold with the mechanism and microcontrollers.

6-what processes will be used?
For the present project the following processes will be executed:
Electronic prototyping -Electronics Design (Control Unit): Vinyl Cutter with copper and model and casting./Design fabduino, flexible circuits of light and sound sound.
Mechanical Design : DC motors, laser cut for mechanical
Structure: Folding Structure:laser cutting
Installation:Shopbot for the fabrication of the base of all project.
Embedded Programming (Control Unit and IMU)

7-what tasks need to be completed?

To be completed:
Sourcing (underway)
Frame design, construction and testing (currently, in the design phase)
Electronics Prototyping(to control DC motors )
Programming the interface that will detect people with Processing
Project assembly of all folding structures tests and adjustments.

8-what questions need to be answered?

9-How could I move the my folding structures ?
What means to design an interactive structure ?
What is the process and method to use for link mechanics, electronics and fabrication. Akso,I want to learn about electronics and design new geometries with also I want to use different material to make it as paper, cardboard , silicone and others.

10-what is the schedule?

This is essentially, a side project, related but completely different from the Final Project Idea Page and, making a very rough schedule, I would state the following: Current week: finishing the mechanical design and testing. Next week: electronics assembly, programming Final Week: movement testing, adjustments

11-how will it be evaluated?
The most important thing is that I want to design all the necessary to make this responsive folding move with inputs of light, sound and maybe human movement. And still use a simple material like paper or cardboard so the electronics have to adapt to this materials and at the same time it has to be simple and flexible.

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Mechanical Design

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Week 16

final project files

The assignment for this week is about the description of our mechanical system of the final project

After trying differents systems I choose this one because is more compatible with the type of dynamic of this folding structure . For me was very interesting studying mechanical solutions for my design at week 15 you could see documentation of my process. I use two cables as you see below even though this structure have many differences axes for guide the movement. first testing
Basically what the structure needs is to compress and expansion to move..

Here you will see the process of our Machine. NEIL SEE YOU IN BOSTON

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Invention, Intellectual Property and Income

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What am I going to do with my project?
The idea of this assignment is to take my project and decide where it belongs to, and describes the all scenarios of how is going to work my project, which kind of direction I want to use for it and how I can manage the vision of an open source project. Also something important it's the next step of my project, in my case related to the idea to start with a personal research in my country (Lima) and also look for more persons doing same things.I am interesting into to make not just a product, most important for me to make an experience and investigation I am very happy with the results of my final project and I need to receive a lot of feedbacks and confirm an investigation group then when I learned enough I will development a product that could help others have my experience .

Intellectual property
For the intellectual property of my “project” well, actually I have many reference not directly with my specific topic but I think my project is a research so I dont think that at this moment maybe is totally product even though I will try to have a pattern because I am planning to participate in financial investment to continue the research

What do I need to develop a marketable product?
First, I need to make a "RESEARCH PLAN ". Because my final project is a prototype in scale of I could apply to the real scale. For this "RESEARCH PLAN " I will look for an interdisciplinary team with an biologist, Botanical , electronic Engineer and other professionals interested in my project.This specialist will be my consultants in all the process.

For 3 Phases I consider that is necessary one year. After this process I will decide what applications I could design for different products.

Income
As I mentioned before, this “final project” is just the beginning of something I am interesting in many time ago. First, the main goal of all this process is to open find financial supports to continue investigation.

What I learned?
I learned that Fab Academy is not easy if you really want to understand each process, is hard if you don't have a background in electronics and programming, but at the same time I learned that the best way to understand as much as possible is following the logic behind every assignment, is more important to understand from your mistakes and not leave your "perfect" idea because it is possible to do it.For me was very important the support of tutors who help me to learn thing more quickly. Fab Academy is about process I really didn't don't where I will or how I was going to finish my project but What I really appreciate is my learning process I learned many thing I have never try.

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Project Development

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Here you can download the final project files

My project: I am Designing an integrated system where plants and physical structures could interact.This interaction shows that plants may sense data from their environment. The idea that I have as a final project is to make a Folding Structure that will be moved using the data from nature. I think that maybe we can learn more about the intelligence of plants connecting them to machines.
I finally prove that this communication is possible Through my prototype, now I will continue with this investigation. In order to achieve this communication, it was important to use electronics amplifier instrumentation to read the millivolts of signal´s plant. I also studied some bacteria but I chose plants because it was easier to read it and also because it was coherent with my initial proposal. You will see below a conceptual image of the a structure in big scale this is only an "utopia image" that we could really cohabitate with nature and learned from them.

I will describe all parts from the project divided in 3 topics one is Nature ,Physical and Digital.

For the first testing in reading the data from plant I use an op amp as a filter .I did this because the problem was to really approach to read plant´s signal. At first I have this problem that in the oscilloscope we could see there is noise that comes from all the machines around so the filter will cut this frequency and smaller signs like the millivolts of the plant.
For the second testing we were looking for similar circuits but more precise .So we found that AD620 this one was a more complex opam wich is already use in medicine. There are like this circuit below that you cand find at web so the thing is to use a simple one to read the plant. This AD620 is an instrumental amplifier that has inside 3 op amps. So I use this for my project.Also to have the possibility to control how much sensitive I want to see of the plant I use a potentiometer. As you will see at the videos there are moments that you we see the reaction of plants just if someone is near. It Really not necessary that someone touch her to see a change in the electrophysiology.What I learned with all my investigation is that plant have a different kind of sensitive from us they are more sensitive it was very surprising see this in process.

plant read from Arely Amaut on Vimeo.

Once I was able to read the plant signal, the objective of my project is to connect this activity and give the possibility to the control a physical structure via the plant. So the plant gives me an analog input, we need just to connect to Fabduino and read the values to program with Arduino IDE. Once I identify a patter I could use to control the motors. As I told you because of sensitive of the plant in this version of my prototype the programming is considering that when plant reach at analog read reach to 1000 or more the motors will activate. The output of plant reaction is to move from left to right the structure.I have to make a lot of calibration with dc motors because I realize that they are not too precise. Even Though I manage this with the programming.

Process of Motion here is a video of the second option to move the structure. You can see the movement controlling with three axes. If you have more axes of movement it will more natural.

movimiento from Arely Amaut on Vimeo.

CODE FOR ARDUINO

installation from Arely Amaut on Vimeo.

Here you can download the final VC CARVE PRO-SHOPBOT file of my INSTALLATION

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SOME OF THE DYNIMIC

PLANT from Arely Amaut on Vimeo.

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