Sensor fusion app

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# Description

This sensor fusion app is intended as an illustration of what

sensor capabilities your smartphone or tablet have.

You can watch graphs of the main sensors in real time, except for

video, microphones and radio signals. You can log data to file

or stream data to a computer. The app is bundled with a a Matlab

interface which allows for on-line processing and filtering for

prototyping and demo purposes.

sensor capabilities your smartphone or tablet have.

You can watch graphs of the main sensors in real time, except for

video, microphones and radio signals. You can log data to file

or stream data to a computer. The app is bundled with a a Matlab

interface which allows for on-line processing and filtering for

prototyping and demo purposes.

The first versions of this app was developed in collaboration

with HiQ (hiq.se), funded by a SAAB award in the name of former

CEO Åke Svensson.

The second version of this app, featuring a considerable rewrite

of the code base as well as extended functionality and Matlab

support, was developed by Gustaf Hendeby as part of introducing

the app as part of a lab in the Sensor Fusion course at

University of Linköping the spring of 2013.

Pleasant sensor exploration, wishes

Fredrik Gustafsson,

Professor in Sensor Informatics,

Linköping University

www.control.isy.liu.se/~fredrik

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# What's New

v2.0b8:

* Improved how data is logged to avoid losing data on Nexus 5 phones.

v2.0b6:

Add experimental support for reading out RSS from WiFi and cell phone networks. This is the reason for the additional permissions required.

Note that the RSS support is still experimental! This means that your experience might vary between different brands and models, and that you cannot rely on the data format to be set in stone.

Please let us know what you think and if you experience any problems.

# Additional information

Updated

December 9, 2014

Installs

1,000 - 5,000

Requires Android

2.3.3 and up

Interactive Elements

Users Interact, Shares Location

Permissions

Report

Flag as inappropriate Offered By

Sensor fusion at Linköping University

Developer

# Similar

## Sensor Fusion Toolbox

Sensor Fusion is a process by which data from several different sensors are "fused" to compute something more than could be determined by any one sensor alone. An example is computing the orientation of a device in three dimensional space. That data might then be used to alter the perspective presented by a 3-D GUI or game.

This educational application by Freescale Semiconductor teaches you about sensor fusion and lets you experiment with various fusion options. It does not REQUIRE that your Android device use Freescale sensors. It is compatible with the Freescale Sensor Fusion Library for Kinetis MCUs. Compatible hardware and embedded software are available at http://www.freescale.com/sensorfusion.

The application also supports the Avnet Wi-Go module paired with a Freescale Freedom board (see www.em.avnet.com/wi-go for details). When used without a development board, this app just lets you experiment with what you already have on your Android device.

This tool is the subject of a Freescale blog posting at: https://community.freescale.com/community/the-embedded-beat/blog/2013/04/08/free-android-app-teaches-sensor-fusion-basics . The fusion library is discussed at https://community.freescale.com/community/the-embedded-beat/blog/2014/02/24/xtrinsic-sensor-fusion-library-for-kinetis. As of October 2014, the fusion library is being released in source form, at no cost.

Please report issues directly to sfusion@freescale.com.

Freescale Semiconductor (http://www.freescale.com) is a global leader in embedded processing solutions including MPUs, MCUs, sensors, analog integrated circuits and connectivity.

## Sensor fusion and IMU

The sensor fusion and IMU application samples data from the accelerometer, gyroscope and magnetometer featured in the smart-phone. It calculates angles and rotation and perform on-board, real-time sensorfusion using high-pass/low-pass and complementary filter.

The data can be plotted in the graph and streamed via Wi-Fi.

The filter parameters can be changed in real time.

The data can be plotted in the graph and streamed via Wi-Fi.

The filter parameters can be changed in real time.

## Scientific Calculator 3D Free

"Scientific Calculator 3D Free" is a powerful math tool for Android consists of 5 calculators. "Matrix Calculator", a tool to calculate the decompositions and various operations on matrix, "Equation Solver" an instrument capable of solving equations of degree n, "Graphing Calculator" a real scientific graphing calculator can draw graphs in 2D and 3D, "Currency Converter" a currency converter always updated with the new exchange rates and "Unit Converter" a small units converter. In addition we find a comfortable Periodic Table of Elements.

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Determinant

Rank

Inverse

PseudoInverse

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LU decomposition whit pivoting

QR decomposition

SVD - Singular Values decomposition

Eigenvalues - Eigenvectors

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Linear Systems M N

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function evaluation: sin(0)

variable definition: a=3.5

function definition: f(x)=x^2-1

parentheses: (1-x)^2

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sqrt(x): square root; x^0.5

cbrt(x): cube root; x^(1/3)

exp(x): exponential; e^x

log(x), ln(x): natural logarithm

log2(x), lb(x): binary logarithm

log10(x), lg(x): decimal logarithm

log(base,x): arbitrary base logarithm

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sin(x), cos(x), tan(x)

asin(x), acos(x), atan(x)

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sind(x), cosd(x), tand(x)

asind(x), acosd(x), atand(x)

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sinh(x), cosh(x), tanh(x)

asinh(x), acosh(x), atanh(x)

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gcd(x,y): greatest common divisor

comb(n,k): combinations

perm(n,k): permutations

min(x,y), max(x,y)

floor(x), ceil(x)

abs(x): absolute value

sign(x): signum

rnd(): random value from [0,1). rnd(max): random value from [0, max).

gamma(x): (x-1)!

mod(x,y): modulo

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i or j is the complex base. Example:

i*i

(1+i)^2

e^(i*pi)

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+ - × ÷ basic arithmetic

^ power

% percent

! factorial

# modulo

√ square root

' first derivative

--Binary, octal, hexadecimal

Value converter in binary, octal or hexadecimal input prefixing respectively 0b, 0o, 0x, in decimal.

binary: 0b1010

octal: 0o17

hexa: 0x100

--Derivative

It is possible to compute the first derivative of a function with one argument using the prime notation: log'(5).

The prime mark (quote) must appear immediately after the name of the function, and must be followed by open-parentheses.

The derivative may be plotted e.g. sqrt'(x).

To compute the derivative of an expression you must define the expression as a named function.

Eg f (x) = x ^ 2 + x, after insertion, type f '(x) to display the graph of the derivative.

--Multi plot

To plot multiple functions on the same 2d graph, simply enter them on the same line separated by ";".

--Special Function

Limit Calculator

Indefinite Integrals

Derivative

Definite Integrals

Taylor Series

Tangent Line

ArcLength & SurfaceArea

Formula Tables

--Graph (MultiPlot up to 6 functions)

Graph of parametric functions

Graph in polar coordinates

MultiPlot 3D

--Widget Calculator

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If you're looking for a graphing calculator app that works smoothly and seamlessly, you've found it! Graphing Calculator by Mathlab is a scientific graphing calculator integrated with algebra and is an indispensable mathematical tool for students in elementary school to those in college or graduate school, or just anyone who needs more than what a basic calculator offers. It is designed to replace bulky and costly handheld graphing calculators and works on virtually any Android phone or tablet.

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* Complex numbers, all functions support complex arguments

* Derivatives sin x' = cos x, ... (hold x^n key)

* Scientific notation (enable in menu)

* Percent mode

* Save/load history

GRAPHING CALCULATOR

* Multiple functions graphing

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* Polar graphs (r=cos2θ)

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ALGEBRA CALCULATOR

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LIBRARY

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Fraction calculator with step-by-step operations and algebra. Shows results as you type. Use space to enter mixed fractions. Graphical display of expressions with history.

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## ISS Detector Satellite Tracker

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Have you seen the International Space Station? It is visible with the naked eye!

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## Matlab Help-learn

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## MATLAB Introduction Inquisitum

Our MATLAB training course gives you instant free access to quality training material to help you learn MATLAB. The course is aimed at beginners as an introduction to MATLAB, and covers the core features of this language and will leave you ready to expand your knowledge and make comprehensive use of MATLAB

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## Antenna & Wave Propagation

This unique free application is for all engineering students across the world. It covers 138 topics of Antenna and Wave Propagation in detail. These 138 topics are divided in 5 units.

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Some of topics Covered in this application are:

1. Antenna-Introduction

2. Types of Antennas

3. Antenna pattern

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7. Field Regions of Antenna

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10. Beamwidth

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14. Antenna Gain

15. Polarization of an Antenna

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17. Bandwidth of an Antenna

18. Types of Polarization

19. Polarization Loss Factor

20. Polarization Efficiency

21. Input impedance of the Antenna

22. Antenna Radiation Efficiency

23. Effective Length of an Antenna

24. Antenna Effective Area

25. Relationship between directivity and maximum effective area

26. Friis Transmission Equation

27. Radar Range Equation

28. Antenna temperature

29. Retarded Potential

30. Far Field Radiation

31. Loop Antennas

32. Radiation parameters of a small loop

33. Small Loop and Infinitesimal Magnetic Dipole

34. Power Density of Infinitesimal dipole

35. Radiation resistance of Infinitesimal dipole

36. Ohmic Resistance of the Circular loop

37. Near-Field Region-Small Loop

38. Far-Field Region -Small Loop

39. Radiation Intensity and Directivity

40. Equivalent Circuit of small Loop antenna

41. Circular loop of constant current

42. Parameters of the Circular Loop

43. Ferrite loop

44. Microstrip antennas (MSA)

45. Antenna Arrays

46. Uniform N-Element Linear Array

47. N-Element Linear Array

48. Direction of Maximum Radiation

49. Direction of Maximum Radiation

50. Directions of Nulls

51. Broadside and End-fire Arrays

52. End-fire arrays

53. Hansen-Woodyard End-fire Array

54. Binomial array

55. Short Electric dipole

56. Retardation effect in short electric dipole

57. Magnetic Field Component: of short dipole

58. Radiation resistance of short dipole

59. Rhombic antenna

60. Folded dipole

61. Long wire antenna

62. Isotropic Linear Arrays

63. Multiplication of Patterns

64. Effect of Earth on the Radiation Pattern

65. Effect of Earth on the Radiation Pattern of Vertical Antenna

66. Effect of Earth on the Radiation Pattern of Horizontal Antenna

67. Phased (scanning) Arrays

68. Array of 2 isotropic point sources of same amplitude and phase

69. Array of 2 isotropic point sources of same amplitude but opposite phase

70. Linear Broadside Arrays with Nonuniform Amplitude Distributions

71. Half-Wave Dipole

72. Yagi-Uda Antenna

73. Reflector Antennas

74. Plane Reflector

75. System temperature

76. System signal-to-noise ratio (SNR)

77. Helical Antenna

78. Slot antennas

79. Horn Antenna

80. Fields and Geometrical Parameters for Horn Antennas

81. Radiation Patterns of Horn Antenna

82. Parameters of Microstrip Antenna

83. Microstrip Antenna - Feeding Methods-Inset Feed

84. Microstrip Antenna-Fed with a Quarter-Wavelength Transmission Line

85. Microstrip-antenna-Coaxial Cable or Probe Feed

86. Microstrip Antenna-Coupled (Indirect) Feeds

87. Microstrip Antenna -Aperture Feeds

88. Traveling wave Antennas

89. Types of traveling wave antennas

90. Planar log-periodic antenna

91. Pyramidal Horn Antenna

92. Directivity of the pyramidal Horn Antenna

93. Conical Horn Antenna

94. Circular Microstrip Patch Antenna

95. Electric and Magnetic Fields -Circular microstrip patch antenna

All topics are not listed because of character limitations set by the Play Store.

## Graphing Calculator MathlabPRO

If you're looking for a graphing calculator app that works smoothly and seamlessly, you've found it! Graphing Calculator by Mathlab is a scientific graphing calculator integrated with algebra and is an indispensable mathematical tool for students in elementary school to those in college or graduate school, or just anyone who needs more than what a basic calculator offers. It is designed to replace bulky and costly handheld graphing calculators and works on virtually any Android phone or tablet.

Furthermore, Graphing Calculator by Mathlab displays calculations as it performs them on the high-quality display of the Android device, making it easier for the user to understand the calculations and see them clearly. This app has two great strengths. First, it acts as a fine scientific calculator, but, more than that, it displays the intermediate steps of the calculations as you type. It allows the students to both watch and learn how the calculations are made and how to find the final answer. Second, the graphing ability is absolutely stunning! Not only does the calculator beautifully display the graphs, but it automatically generates the x- and y- values and displays them as well.

Help site with instructions and examples: http://help.mathlab.us

If you have a question, send email to calc@mathlab.us

PRO FEATURES

* 3D graphs

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* Internet is not required

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SCIENTIFIC CALCULATOR

* Arithmetic expressions +, -, *, /, ÷

* Square root, cube and higher roots (hold ‘√’ key)

* Exponent, logarithms (ln, log)

* Trigonometric functions sin π/2, cos 30°, ...

* Hyperbolic functions sinh, cosh, tanh, ... (hold "e" key to switch)

* Inverse functions (hold direct function key)

* Complex numbers, all functions support complex arguments

* Derivatives sin x' = cos x, ... (hold x^n key)

* Scientific notation (enable in menu)

* Percent mode

* Save/load history

GRAPHING CALCULATOR

* Multiple functions graphing

* Implicit functions up to 2nd degree (ellipse 2x^2+3y^2=1, etc.)

* Plar graphs (r=cos2θ)

* Parametric functions, enter each on new line (x=cos t, y=sin t)

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* Tracing function values and slopes

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* Pinch to zoom

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* Function tables

* Dave graphs as images

* Save tables as csv

FRACTION CALCULATOR

* Simple and complex fractions 1/2 + 1/3 = 5/6

* Mixed numbers, use space to enter values 3 1/2

ALGEBRA CALCULATOR

* Linear equations x+1=2 -> x=1

* Quadratic equations x^2-1=0 -> x=-1,1

* Approximate roots of higher polynomials

* Systems of linear equations, write one equation per line, x1+x2=1, x1-x2=2

* Polynomial long division

* Polynomial expansion, factoring

MATRIX CALCULATOR

* Matrix and vector operations

* Dot product (hold *), cross product

* Determinant, inverse, norm, transpose, trace

LIBRARY

* User defined constants and functions

* Save/load expressions

## MathScript Scientific Calc

MathScript is one of the most powerful scientific calculator available in Android. It encompasses a very powerful solver that can solve almost everything you throw at it. A smart user interface system allows easy editing of mathematics. MathScript also has a visually attractive function plotting capability. With MathScript, you can perform almost all of mathematical tasks you can imagine. It has an optimized interface that makes it easy to work with complex equations.

Some of the many prominent features include:

* full fledged scientific calculator

* saving and restoring computations/calculations

* complete algebra system using SymPy library (integration, differentiation, polynomials, algebra etc.)

* graphical rendering of equations

* function plotting

* python programming (complete suite)

If you like the app, please give us a good rating. If you are not happy with the app, please mail us. We are working hard to improve the interface and a better rating will motivate us to do the same.

Note:: We have very high regard for customer satisfaction. If you have any difficulty, please let us know. If we are not able to rectify in a short time, we will promptly refund your amount.

You can use MathScript as a calculator, function plotter, polynomial manipulation tool, equation solver (algebraic, differential, linear etc.), calculus tool (integration, differentiation, of arbitrary functions), matrix solver (linear algebra), units converter, finance tool (PMT,PV,FV. etc.), programming shell (complete python package), etc... It also contains interesting math puzzles that make you learn math in fun way. Train your brain to use mathematics whenever possible,

Many of the features are available only in the advanced computing tools like Matlab*# and Mathematica*#.

Add even half of the above features and the cost of other similar products in the market would easily cross $20. Our aim is to make the Math tools affordable by all. The pricing is maintained to be low, and will be maintained that way in near future. Give a try and let us know how you feel (feedback button available in Help).

NOTE1:: Please use the in-built tutorials (Menu->"Learn n solve") to learn how to use the software. More than 10 tutorials are designed to cover all basic topics. More will be added.

NOTE2:: First time installation involves downloading three open source libraries (Python, SymPy and JsMath). Please be patient till the software completes the installation.**

WEBSITE:: Please visit us at

http://www.touchthinktanks.com

KIND REQUEST:: We implement the user suggestions and reviews as soon as possible. Unfortunately, the Android market platform does not provide a mechanism to reply to the market reviews. Please check out the latest version software and enable auto-update to obtain latest copy. In case you have any suggestions/complaints, please provide a feedback using the application (Menu->Help->Feedback). We will try to rectify the problem as soon as possible.

***MathScript collects anonymous usage statistics using google analytics. The statistics will be used to customize the keyboard layout and provide advanced features in future versions. Once we have adequate data, the usage statistics will be displayed in our website***

Ongoing Development::

* Categorized help system

* Accessible code-snippets for quick computation

* Enhanced editor interaction

Coming Soon::

* 3D plotting

* Kids mode (would be impossible to make mistakes)

* Lessons for school kids with solvable questions

* Math Puzzles ( for learning math the fun way )

Planned features:

** Just too many of them. Keep your auto-update on!!

*# Matlab and Mathematica are registered trademarks of MathWorks and Wolfram

## Integral calculator

Full version. This app is 100%Free!

Users college level with some knowledge in integral and/or Fourier series will appreciate in depth all features of this app.

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In resume, with Functions Integrator is able to do the following operations:

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