Making Mr. Jaws at the MakerLab

This video introduces the Illinois MakerLab and demonstrates the workflow for getting something printed at the lab. The example used in the demo is called Mr. Jaws, which is a test print that is used to test a new Replicator 2 printer.This video was made by Ms. Hyewon Cho , a Phd Student in Marketing, who is also doing research in the MakerLab, to study the impact of 3D printing on consumer behavior.

Getting started with Arduinos

An Arduino is a micro-controller board, which has been used for thousands of projects. An arduino can be powered up by simply connecting it to the computer via USB cable or using AC/DC adapter or using battery. The videos below have been compiled by Ivan Setiawan . The Makerlab held an Arduino Workshop on Thursday, and you can check out our other events here.

An Arduino is a micro-controller board, which has been used for thousands of projects. An Arduino can be powered up by simply connecting it to the computer via USB cable, using an AC/DC adapter to plug it into a wall outlet, or using a battery.

A series of video tutorials is posted below that will introduce you to the Arduino and technical topics involved with using the Arduino and then guide you through some advanced projects using sensors and communication with a computer. The videos below have been compiled by Ivan Setiawan.

If you're looking for a more text-based tutorial, check out the the large collection of tutorials that Tronixstuff has to offer: http://tronixstuff.com/tutorials/. They range from beginner topics in Chapter 0 to advanced projects in Chapter 57.

Another great resource is Instructables. They have a specific Arduino channel in which you can browse all the projects that involve an Arduino: http://www.instructables.com/tag/type-id/category-technology/channel-arduino/. You can find projects ranging from introductory stuff (http://www.instructables.com/id/Beginner-Arduino/) to a remote-controlled lego car (http://www.instructables.com/id/Lego-Technic-Car-with-Arduino-XBee-Wireless-Contro/) and even remote controlled Toyota (http://www.instructables.com/id/Remote-control-car-My-real-car-RC-controlled-Ardui/).

The Makerlab held an Arduino Workshop on Thursday, and you can check out our other upcoming events and sign up.

Jeremy Blum's Tutorials for Arduino:


Introduction to Arduino Programming: The following tutorial will help you get acquainted with the Arduino Uno and introduce the programming language used. http://www.youtube.com/watch?v=fCxzA9_kg6s

Using Buttons, PWM (Pulse Width Modulation), and Functions: In this tutorial, we will use electrical components such as resistors, a breadboard, and LEDs. This video will show us how we can change the brightness of the LED by using PWM technique. PWM is a technique for controlling analog circuits with microprocessor's digital outputs. You will be able to rasie and lower the brightness of an LED by using the analog output. http://www.youtube.com/watch?v=_LCCGFSMOr4

Electrical Engineering Concepts in Arduino: This tutorial will focus on the electrical concepts such as Ohm's Law, current limiting resistors, voltage dividers, analog inputs, and voltage regulators. Understanding the basic concepts is essential to create fun projects with Arduino. http://www.youtube.com/watch?v=abWCy_aOSwY

Using Analog Inputs: This video will teach you how to use and connect various sensors to the analog inputs in Arduino. This video will use an IR distance sensor as an input to detect the distance and movement of object. http://www.youtube.com/watch?v=js4TK0U848I

Motors and Transistors: This following video tutorial will teach you how to control the servo DC motors with the help of a NPN transistor and a PWM (pulse width modulation) signal. At the end of the video tutorial, the servo motor will rotate 20 degrees every second. http://www.youtube.com/watch?v=5bHPKU4ybHY


Serial Communication and Processing: In this following tutorial video, we will focus on communicating with the computer via standard serial connection to send data from Arduino to the computer using processing . This video tutorial will teach you how background color in the computer can change if we turn the potentiometer. http://www.youtube.com/watch?v=g0pSfyXOXj8

I2C (I2 Celsius) and Processing: In this following tutorial video, we will use I2 Celsius temperature sensor to generate a room temperature display on the computer screen using processing and serial communication from the previous video. http://www.youtube.com/watch?v=GJX0BRUagCg

Using SPI (Serial Peripheral Interface) Interfaces: The serial peripheral interface (SPI) bus is a synchronous serial data protocol used by microcontrollers for communicating with one or more devices. This method can also be used to communicate between two microcontrollers. In this following tutorial video, a potentiometer will be used to control the brightness of several LEDs altogether. http://www.youtube.com/watch?v=1nO2SSExEnQ


Wireless Communication in Arduino: In this following tutorial video, we will use a transceiver to create wireless serial communication. At the end of this tutorial video, turning a potentiometer in one Arduino can adjust the servo motor connected to another Arduino wirelessly. http://www.youtube.com/watch?v=vKVNmA8C6m8

Interrupts and Debouncing: Interrupts enables a program to run and react to asynchronous inputs from other inputs. In other words, interrupts can cause microprocessors to work on a different task, then go back to its initial task. This following video will show you how to use a hardware debounced button to activate an interrupt in the Arduino. http://www.youtube.com/watch?v=CRJUdf5TTQQ

SD Cards and Datalogging: SD (secure digital) card is a memory card format used in portable devices such as mobile phones, digital cameras, and tablet computers. This following tutorial video will walk you through how to write and read to an SD card. Then, several sensors will be added periodically to create the datalogger. The logger will record sensor values to its SD card so that a computer program can visualize the data later in Microsoft Excel. http://www.youtube.com/watch?v=5v5A3j7Rrco

If you like this content and would love to see more, follow us on Facebook and Twitter.


It's Easy as 123D Catch

So you want to learn how to 3D scan an object using 123D Catch? Don't worry it is easy to learn! 123D Catch allows you to create photo realistic 3D models from just photographs from your camera or iPhone. First you will need: - your object - a camera or phone - 123D Catch App

[youtube http://www.youtube.com/watch?v=7TfXXJxDsXw?feature=player_detailpage] 1. Taking the photos. - Make sure that you can move around your object when you take photos. - Take 20-40 photos from different angles around the object. (The more pictures the better!) - Tips: - No transparent or very reflective objects. - Don't move the object, only you move when you take the photos. - Make sure your object is on a unique background with lots of details, place newspapers down if necessary, and put the object on them.

[youtube http://www.youtube.com/watch?v=9jIU0vJdAHs?feature=player_detailpage] 2. Upload your photos into the 123D Catch Cloud. - Either download the software if you have a PC or iPhone or load up the app in your browser and launch 123D Catch (Both can be found here) - Click on "Create a new photo scene" - Find all the photos you have taken and click "open" - Click on the "green checkmark" and type in your name and email, then agree to the terms - Confirm your email and type in a name for your project and then click "wait" - After all of your photos are uploaded, click on the prompt that will let 123D Catch send you an email when the 3D Model is complete - All of the heavy computing to create the 3D model is done in the cloud freeing you and your computer from processing time - 123D Catch should close when you click "ok"

3. Getting your 3D model - When your 3D model is done you will receive an email that has a link for you to download your file - Download and save the .3dp file on to your computer/phone - Back in the 123D Catch app, open up this file that you just downloaded - You have now just created 3D model using the photos you have taken!

[youtube http://www.youtube.com/watch?v=zlarVKBAEtM?feature=player_detailpage] 4. Cleaning up your 3D model - You can clean up your model directly in 123D Catch by select and delete certain parts of your mesh that are not necessary to 3D print (be careful though because there is no undo button) - You can also edit the model in Netfabb or other 3D CAD software.

And there's your model! If you have questions, please post on our Forums

Come on into the Makerlab on Friday, April 5th from 2-4pm for a workshop to 3D scan for yourself!

Subscribe to our blog RSS feed to be the first to hear about events, new tutorials and other exciting news from MakerLab and Like our Facebook page.