As part of the National Instruments Tinker, Learn, and Do Engineering with NI myDAQ course ware, the hands on experiments demonstrate the wide range of possibilities of using NI myDAQ hardware. The 10 lab experiments cover a wide range of topics including analog and digital circuits, sensors and signal processing of audio sound tracks. View all o
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f the labs for the Tinker, Learn, And Do Engineering With NI myDAQ course ware. In the 1950s and 1960s, a new spooky background sound was introduced to fans of ScFi and horror TV shows and movies. It was not a new sound but a rebirth of the Theremin invented in 1928 by Professor Leon Theremin using 1050s electronics (Fig. 1). The Theremin was the first electronic musical instrument. It had two antennae which were part of resonant RLC oscillators. When you placed you hand near an antenna, the electric field was disturbed, resulting in a shift of the resonant frequency. One antenna controlled the frequency or pitch, while the other antenna modified the amplitude of the sound. The Theremin now has a cult following, and you can see and hear the early sounds in some of the references. This lab uses myDAQ and two optical sensors to build an optical Theremin with its own unique sound. One hand moves over a photodiode to change the pitch. The other hand moves over a second photodiode to change the amplitude. There is a lot of scope in this project to make your sound unique and to let your creative juices flow. Download the files aboveto access the courseware pertaining to this lesson that illustrate how the mDAQ can be used with NI LabVIEW covering a range of tools from introductory level exercises to design challenges. A photodiode (when radiated by a light source) generates a very small (microamp) current. The signal level can...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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