How do you communicate with someone who can't see? Using braille changed the way we give information to the blind and as technology moves forward, all aspects of communication should follow. Now is your chance to build a modular braille device using simple concepts. Try out the Dynamic Braille Design challenge now!
We all take advantage of being able to use things like GPS, cell phones and the internet for communication, but how are these staples of society transferring all of this information? Is there a common principal between transferring information with electricity and transferring data using light? This was a challenging question when it was proposed by Alexander Graham Bell over one hundred years ago and now you will get to decide for yourself!
In a solar cell, the energy of absorbed light is used to produce an electrical current. The efficiency of this conversion process depends on the wavelength of the light and quantitative measurement of this efficiency in a form called spectral response is an essential device characterization. In this design challenge you will create a small-scale version of a newly developed diagnostic tool used by researchers and manufacturers to characterize photovoltaic devices.
A spectrophotometer is an instrument which measures the amount of light of a specified wavelength which passes through a medium. Can you design a device like this and use it to determine the type of liquid or the color of material placed in its path?
An interesting combination of data conversion and physical indicators, the binary clock creatively tells time using binary numbers for each character. Now you can create your own binary clock using LabVIEW and some LEDs. Explore new ways to present information and expand your creative horizon with this module!
In this module we’ll create a digital dice using nine LEDs, the myRIO’s accelerometer, and some simple circuitry. A simulated dice roll will be activated whenever the myRIO is shaken or when its button is clicked.
Resonance – the natural tendency of a system to oscillate with increased amplitudes at particular frequencies – is a ubiquitous phenomenon in science and engineering. For example, the functioning of quartz clocks, lasers and magnetic resonance imaging scanners all rely on this effect. In this guided project, the frequency response of an LCR circuit is investigated by both steady-state and transient methods.
Using a color sensor allows for more in depth detection in your applications. We can take a creative approach to displaying our results as well. In this module we will combine a tricolor LED with a color sensor to create a system that can replicate colors that it sees. Explore just how easy it can be to design your very own electronic chameleon!
This is your chance to prove that energy is comprised of discrete packets. This module will give you the opportunity to build the experiement that helped revolutionize the understanding of the particles in our universe! Use the IV characteristics of LEDs to experimentally derive Planck's constant.
Have you ever wondered how our modern hearing tests work? People percieve different tones at varying levels and it is how high of a level the tone needs to be before it is heard that a hearing test evaluates. Now you can experience first hand what it takes to build a hearing test. In this module you will be guided through the steps needed to build a simple VI to evaluate a user's hearing. You will be given the opportunity to apply the program architecture of your choice to gather user reaction information, process it and give meaningful feedback.
Have you ever thought about how we communicate information? Communication systems take advantage of varying different parts of a signal in order to send a message. Now you can experience embedding your own messages on a light signal. You will design a system that will blink lights according to the frequency content of your favorite songs.
In this guided project, you will build a computer-based light frequency meter and use it to measure the frequency of a blinking light-emitting diode (LED). The pulse counting experimental technique employed in this project is widely used in diverse applications including time keeping, voltage digitizing, and rotational characterization.
We are constantly being bombarded by information in the form of light energy everyday. We are able to see visible light but a great majority of what we come into contact with we can't even see; but what if we could hear it? Now in this module you will experience the sound of colors and the patterns given off by things like computer screens and remote controls. You will be given the opportunity to listen to different light signals and be challenged to decode invisible messages!
Morse code was once widely used World over by almost everyone needing distant communication. Military, overseas shipping and the railroad relied on Morse code to provide reliable messages via wires. After the invention of radio during the first years of the 1900s, communication became more widespread and predictable. Industries relied on it to send simple and rapid messages to their distant clients and employees.
Countless builders have attempted to recreate the paradoxical illusion known as the Penrose Stairs. How many of them tried making one with movable parts, however? In this module you will take on the challenge of building a mechanical version of the Penrose Stairs!
In this exciting guided project you will tackle the task of creating a password protection program that can be applied to all kinds of security situations. Use this in your next door locking project or even create an app that connects your phone with your entertainment system!
Did you know that there are materials that we can see through that have the ability to completely block Ultra Violet (UV) light? Well that is exeactly the science behind UV sunglasses and the materials used in medicine bottles. But how much are these materials actually blocking? Now you can find out by building your very own light transmission test! Experiment with gel filters and LEDs, even vary the color shining on a single material to see how it behaves across a large spectrum on light frequencies. Design and build your own experiment today!
A buzzer is a simple speaker that typically does not have a large range. Using a buzzer in your applications opens more ways to alert users or even a means of communicating different sets of information. This module will show you how to interact with a buzzer with your National Instruments hardware.
Adding color to an application gives a new dimension to analysis and problem solving. Color sensors can be used in obstacle avoidance and fault detection in assembly lines. Expand the capability of your applications with color sensors!
All components respond in some way to voltage and current. The knowledge of how different componetns react to voltage, current and how they change allows us to build complex circuits that can store charge, perform fundamental mathematical and comparison functions and make logic based decisions. Understanding how a components relates back to its IV curve is essential in experiments because early on they are used as reference points for the remaing data.
You will understand these core concepts related to the data encoding and decoding after completing the activities in this module:
1. High level boolean logic
2. How to use a Case structure in LabVIEW
3. How to edit SubVIs
DC Motors take advantage of electricity and magnatism to convert current into mechanical motion. Using a dc motor along with other actuators allows you to develop systems that can physically interact with users or other objects.This module will help you understand the basics of DC motors as well as important design considerations that need to be taken with motors.
Light emitting diodes (LEDs) are very easy to control by themselves. As the number of diodes increase the complexity stays relatively the same but with more output lines to serve as controllers. An LED matrix takes the idea of turning on a single LED and breaks it out into controlling a row and column. This module will help you understand how to interact with individual LEDs in a matrix using LabVIEW. Expand your display capability with a matrix of LEDs!
The world of elctricity and magnetism is very large and can get extremely complex. The applications are limitless however. Using sensors that can detect a change in magnetic field allows you to detect a particular point on a spinning axis or imperfections in a pipe. This module will help you understand how to use a sensor that detect a change in a magnetic field and make decisions based off of it.
Have you ever wondered how a keypad is read using software? How many input lines are needed in order to read a 16 button keypad? How does this change as the keypad incorporates buttons? In this module you will learn the typical way keypads are read and have an opertunity to read from a keypad into LabVIEW.
Have you ever wondered how sound is interpreted by a microphone? How about what different types of microphones exist? This module will give an introduction to how an electret microphone works and how sound quality is affected by how fast the data is sampled.
You will understand these core concepts related to photodiodes and solar cells after completing the activities in this module:
1. A photodiode is similar to an LED
2. A solor cell is a photodiode acting in the photovoltaic region
3. A hight level understanding of an Op Amp
4. Solar cell configurations and their benefits
A piezoelectric sensor sandwiches a piezoelectric material between two plate electrodes. Deforming the sensor causes a charge displacement that appears as a measurable voltage between the plates, much like a parallel-plate capacitor. Combining the piezoelectric sensor with a charge-to-voltage converter provides a useful sensor to detect shock and vibration.
A potentiometer is a device that provides a variable output resistance. Including a potentiometer in your applications will allow you to change parameters of a circuit such as gain, cutoff frequency or ocillation frequency. After your circuit has been designed it is a good idea to test it with variable components to allow for fine tuning. This module will help you understand how to properly wire a potentiometer and how to properly read it in LabVIEW.
A pushbutton allows you to add mechanical control to a large range of circuits. You can add user interaction to circuits for applications that involve text input, warning signals and user reaction to other forms of communication. This module will show you how to use a push button with your National Instruments hardware and give you and understanding of common issues associated with using pushbuttons.
Relays provide an excellent means of electrically separating highpower circuits from the circuits meant to control them. A relay can be electromechanical which means that a connection is made by metal which allows for large currents and low resistance through the relay. This module will help you understand how to wire a relay to your National Instruments hardware and give you the opportunity to expand your application with higher power components.
Adding a rotary encoder to your application will allow you to track changes in rotational position and speed. Rotary encoders are found in automotive applications to provide feedback on the position of different rotating parts. This module will show you how to properly wire an encoder to you National Instruments hardware and explain how you can determine the direction of rotation to help expand your appliction.
This module will help you understand the basic parts of a servo motor as well as how to interact with it in LabVIEW. A servo can be used in a variety of applications that range from hobby electronics to assembly line control.
You will understand these core concepts related to speakers after completing the activities in this module:
1. LabVIEW allows you to control audio signals using arrays
2. In order to properly recreate all of the frequency content in a signal you must sample at least twice as fast as the highest frequnecy component in the signal
3. The left and right audio output channels can be independently manipulated
4. Speakers use electromagnets surrounded by a permanent magnet to create sound pressure signals
The thermistor – a contraction of “thermal” and “resistor” – is a two-terminal semiconductor device whose resistance varies with temperature. Most thermistors are of the negative temperature coefficient (NTC) type, meaning their resistance varies inversely with temperature.
Many tests require signals to be applied to a device under test. These signlas can be fundamental sinusoidal or square waves or they can be custom defined and made periodic by repeating data sets at specific intervals. Explore the Waveform Generation module to learn different ways to generate signals in LabVIEW!