This app uses your smartphone’s internal sensors to collect, view, log and export .csv data files. See www.vieyrasoftware.net to (1) read about using cases in research and development and (2) obtain lesson plans for educators in the fields of science, technology, engineering, and mathematics (STEM), including physics. The availability, precision and accuracy of the sensor depend on the smartphone hardware.
Sensors, generators and data analysis tools include the following:
KINEMATICS
G-Force Meter – ratio of Fn/Fg (x, y, z and/or total)
Linear accelerometer – acceleration (x, y and/or z)
Gyroscope – radial velocity (x, y and/or z)
Inclinometer: azimuth, roll, pitch
Protractor – angle from vertical or horizontal
ACOUSTIC
Sound level meter – sound intensity
Tone Detector – music frequency and tone
Tone Generator – producer of sound frequencies
Oscilloscope: waveform and relative amplitude
Spectrum Analyzer – Graphical FFT
Spectrogram – FFT waterfall
LIGHT
Light meter – light intensity
Color Detector: Detects HEX colors within a small rectangular area on the screen via the camera.
Color generator: R/G/B/Y/C/M, white and custom color screen
Proximeter – periodic movement and timer (timer and pendulum mode)
Stroboscope (beta) – camera flash
Wi-Fi: Wi-Fi signal strength
MAGNETISM
Compass – magnetic field direction and bubble level
Magnetometer – magnetic field strength (x, y, z and/or total)
Magna-AR – augmented reality display of magnetic field vectors
OTHER
Barometer – atmospheric pressure
Ruler – distance between two points
GPS: latitude, longitude, altitude, speed, direction, number of satellites
System temperature – battery temperature
COMBINATION
Multi Record: Choose one or more of the above sensors to collect data simultaneously.
Dual Sensor: View data from two sensors on a real-time graph.
Roller coaster: G-force meter, linear accelerometer, gyroscope and barometer
PLOT
Manual Data Plot: Enter data manually to generate a graph.
GAME
Play – challenges
CHARACTERISTICS
(a) Record: Record by pressing the red floating action button. Find the saved data stored in the folder icon.
(b) Export: Export data by selecting an option to send by email or shared in Google Drive or Dropbox. Locally saved files can also be transferred from the folder icon.
(c) Sensor Information: Click the icon (i) to identify the sensor name, vendor and current data collection rate, and to know the type of data collected by the sensor, its physical working principle and links to additional resources.
SETTINGS
* Note that not all settings are available for all sensors.
(a) Data Visualization: Displays data in graphical, digital or vector form.
(b) Graph View: View multidimensional datasets on a single shared graph or in multiple individual graphs.
(c) Display Axis: For multidimensional data on a single shared chart, select total, x, y, and/or z data.
(d) CSV Timestamp Format: Records clock time or elapsed time with sensor data.
(e) Line Width: Change the visual presentation of the data to a Thin, Medium or Thick line.
(f) Sensor Collection Rate: Set the collection rate to Faster, Game, UI, or Normal. The sensor collection rate is displayed for each option selected.
(g) Keep screen on: Prevent the app from turning off the screen automatically.
(h) Calibrate: Calibrate the selected sensors.
