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AnyScan209 – Free 2D/3D Universal Visualizer & Magnetometer App for Android

AnyScan209 is a professional free Android app that transforms your smartphone into a powerful 4-in-1 sensor visualizer for any sensor data in the 0–1024 range.

🔹 AnyScan209 is not just a magnetometer – it's a universal 2D/3D visualizer with four internal sensors and any 0–1024 external data source.
Choose from magnetometer, barometer / altimeter, light sensor, or sound / noise meter — or connect an external sensor (Arduino, ESP, HC-05 via Bluetooth) for temperature, pressure, acoustic, or custom measurements. Just send values between 0 and 1024 – the app handles the rest.

Designed for geophysical surveys, magnetic field visualization, subsurface anomaly detection, elevation mapping, illumination analysis, and acoustic noise mapping, this app supports both internal smartphone sensors and external Bluetooth modules like HC-05.

With AnyScan209, you can perform 2D and 3D mapping, export data in OBJ, STL, CSV, and PLY formats (each available in low and high resolution, with PLY preserving color attributes), and analyze variations with precision. Whether you're a researcher, educator, or hobbyist, this free universal visualizer provides professional-grade analysis tools right on your Android device.

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1. How to Create a Scan File in AnyScan209

The AnyScan209 features three main screens. To create a scan file, select the required dimensions using the longitudinal and transverse bars. The supported scan size range is from 8×8 up to 100×100 points, allowing detailed mapping and data visualization.

Enter a file name if required and select the Create Scan option. The top menu includes Open Scan, Export (OBJ, STL, CSV, PLY), and Bluetooth transfer options. Long-press the Bluetooth icon to adjust communication speed for external sensors. Use Settings to configure sensors, language, and device connection.

2. Scan Screen Operations and Data Recording

Use the phone back button or the top navigation arrow to enter the scan screen. The menu provides New Scan, 2D/3D mode selection, and scanning direction options for flexible data collection.

The navigation controls allow movement through grid cells without recording. Press Record to save measurements. Long-press the Record button to enable automatic timed recording – perfect for systematic surveys.

After completing a scan, choose Direct Save for original data or Enhanced Save for improved visualization processing.

3. Data Management – Save, Restore, and Edit Cells

Manual Save & Rollback

You can save your scan at any point during data collection using the Save option from the menu. If you make a mistake, simply cancel the save – the app will roll back to the last saved state.

Using the navigation buttons (back/forward), you can jump to any cell and continue scanning from that point.

Editing Individual Cells

You can edit any single cell manually, but only in External mode or when Bluetooth is disconnected.

• Adjust the slider at the bottom to set a custom value between 0 and 1024.
• Press the Record (▶) button to write that value into the currently selected cell.

4. Scan Direction and Navigation

The scan always starts from the bottom‑right corner and moves vertically (bottom to top).

Two scan modes are available:

• One‑Way (Go/Go): Scan bottom→top, then return to the bottom and start the next column.
• Zigzag (Go/Return): Scan bottom→top, then continue directly top→bottom in the next column. This is faster and more efficient for large grids.

Use the direction toggle in the scan menu to switch between these modes.

5. 2D Visualization Features

The 2D menu provides different visualization tools including:

• Smoothing – reduce noise in your data
• 43 color palettes – customize visual representation
• Amplification modes – enhance subtle variations
• Noise reduction – improve signal clarity
• Grid display – precise spatial reference
• Zoom functions – detailed analysis of specific areas
• RGB channel removal – cancel any color channel
• Color shift – rotate the color spectrum
• Crop – focus on specific regions

6. 3D View and Advanced Visualization Settings

The 3D viewer allows:

• Rotation – examine data from any angle
• Movement – navigate through the 3D space
• Depth adjustment – focus on specific layers
• Lighting control – enhance visual clarity
• Custom textures – apply your own images as surface textures
• 43 color palettes plus texture options
• RGB channel removal – cancel any color channel
• Amplify height – exaggerate vertical differences
• Amplify colors – boost overall vibrancy
• Color shift – rotate the color spectrum
• Crop – focus on specific regions

Long-press the rotation control to enable automatic rotation for dynamic presentations. The viewer supports different presentation modes for easier interpretation of collected data.

7. Export and Data Transmission Formats

AnyScan209 supports data export and real-time streaming in multiple formats for maximum compatibility with analysis software:

• OBJ: Best for advanced 3D modeling and rendering software. Available in low-resolution and high-resolution output.
• STL: Ideal for 3D printing applications to generate physical topographic relief maps. Available in low-resolution and high-resolution output.
• CSV: Standard spreadsheet formatting used for tabular data analysis in Microsoft Excel, MATLAB, or Voxler. Available in low-resolution and high-resolution output.
• PLY: A rich 3D format that stores both geometry and color attributes (per-vertex color), making it the best choice when you want to preserve the color palette of your scan. Available in low-resolution and high-resolution output.
• Real-Time Bluetooth Serial Stream: Allows a 1:1 raw data broadcast directly to compatible receivers, such as customized Microsoft Office macros, analytical HTML scripts, or third-party mapping applications with built-in serial communication capabilities.

8. General Settings and Sensor Configuration

The settings menu provides:

• Sensor selection – internal or external (Bluetooth)
• Language selection – English or Persian
• Compass options – for orientation assistance
• Detector sound – audio feedback for measurements
• Vibration feedback – tactile confirmation
• Screen control – power management during long scans
• Visualization assistance tools – for improved data interpretation

The app supports internal smartphone sensors and external Bluetooth sensor modules like HC-05 and other SPP-compatible devices.

9. Pro Tip: Enhancing Your Scanning Setup

For stable scanning movement, a smartphone holder or selfie stick can be used. A Bluetooth remote controller can also help operate the Record function without touching the phone – ideal for maintaining consistent measurements.

10. External Sensor Mode for Advanced Scanning

In External Sensor mode, activate the external option from the Settings page. Using a serial Bluetooth module such as HC-05 or another SPP-compatible device, a microcontroller can send measurement values to AnyScan209.

The communication range is based on values from 0 to 1024. In magnetometer mode, the center balance value is approximately 512. Other sensor types can use the full 0 to 1024 range for various measurements.

11. Internal Sensors – Four Powerful Modes in One App

AnyScan209 is not just a magnetometer. It is a universal 2D/3D visualizer that can read from four different internal smartphone sensors. To choose the sensor you want, simply long-press the sensor icon on the Settings page — a sensor selection list will appear, and you can switch between any of the following four sensors at any time.

🧲 1. Magnetometer – For Geophysics, Cavity Detection & Magnetic Field Mapping

The magnetometer (compass sensor) is the most powerful mode in AnyScan209 and is designed for serious field work:

• Geophysical surveys – mapping subsurface anomalies
• Cavity and void detection – locating underground hollow spaces, tunnels, or buried structures
• Geological exploration – studying soil and rock magnetic signatures
• Magnetic field visualization – detecting and mapping static and alternating magnetic fields
• Metal and wire detection – finding ferromagnetic objects, rebar, pipes, and conduits behind walls
• Educational experiments – demonstrating electromagnetic principles in real time

This mode is ideal for researchers, geophysicists, treasure hunters, and anyone working with magnetic field analysis.

⛰️ 2. Barometer / Altimeter – For Elevation Mapping & Surface Topography

The barometric pressure sensor (available on many modern smartphones) measures atmospheric pressure and converts it into relative altitude. In AnyScan209 this sensor becomes a powerful elevation mapping tool:

• Altitude measurement – tracking elevation changes
• Surface topography mapping – building 2D and 3D maps of terrain height differences
• Floor-level surveys – detecting small height variations across an area
• Outdoor field surveys – mapping hills, slopes, and elevation contours

💡 3. Light Sensor – For Illumination Mapping & Environmental Light Analysis

The ambient light sensor measures the intensity of light around the phone. In AnyScan209, this sensor becomes a professional illumination mapping tool:

• Light intensity surveying – measuring and mapping brightness across a surface or space
• Lighting installation analysis – visualizing how light is distributed in a room, hall, or outdoor space
• Environmental light visualization – analyzing natural and artificial light patterns
• Greenhouse & agricultural mapping – mapping light distribution for optimal plant growth
• Photography & studio lighting – checking evenness of illumination
• Architectural lighting design – verifying light coverage and uniformity

Perfect for lighting engineers, greenhouse operators, photographers, and anyone who needs to see how light is distributed in a space.

🔊 4. Sound / Noise Meter – For Acoustic Mapping & Industrial Noise Analysis

The phone's microphone is used as a professional sound level meter (SPL meter). In AnyScan209 this becomes a powerful acoustic mapping tool:

• Noise mapping – measuring and visualizing sound levels across an area
• Industrial noise analysis – mapping noise pollution in factories, workshops, and construction sites
• Acoustic environment surveying – analyzing sound distribution in rooms, halls, and open spaces
• Soundproofing verification – checking effectiveness of acoustic insulation
• Machine diagnostics – locating abnormal noise sources in equipment
• Environmental acoustics – studying urban, rural, and indoor noise patterns

Ideal for acoustic engineers, safety inspectors, industrial technicians, and researchers studying noise pollution.

12. Gain and Balance – Understanding the 0–1024 Range

Internal Sensor (Magnetometer)

Smartphone magnetometers are typically 16‑bit sensors with a raw range of 0 to 65,535. AnyScan209 applies a Gain factor (adjustable from 10 down to 1) to map this raw data into the 0–1024 visualization range.

• Default Gain = 10: The app automatically balances the sensor using the Balancer (⚖️) icon, setting the neutral point to 512. This provides maximum sensitivity for magnetic field detection.
• Lower Gain (9 to 1): Reduces sensitivity but covers a wider measurement range. At Gain = 1, every 64 raw sensor units equals 1 unit in the 0–1024 range.

External Sensor (Bluetooth)

In External mode, the user is responsible for pre‑scaling their sensor data in hardware or firmware before sending it via Bluetooth. The app expects values in the 0–1024 range and applies no additional gain or scaling internally.

13. Schematic Diagram – External Sensor Connection

14. Microcontroller Integration: BASCOM to Arduino

Original BASCOM Code

$regfile = "m8adef.dat"
$crystal = 8000000
Config Adc = Single , Prescaler = Auto , Reference = Avcc
Enable Interrupts
Config Portc.0 = Input
Config Portc.2 = Output
Dim Insw As Bit
Dim Vale As Word
Do
If Pinc.0 = 0 And Insw = 1 Then
Insw = 0
Portc.2 = 0
End If
If Pinc.0 = 1 And Insw = 0 Then
Portc.2 = 1
Insw = 1
Vale = Getadc(1)
Print Vale
End If
Loop
            

Converted Arduino C++ Code

// BASCOM PortC.0 to Arduino input pin
const int switchPin = A1;
const int outputPin = 2;
bool lastSwitchState = false;
int analogValue = 0;
void setup() {
  Serial.begin(9600);
  pinMode(outputPin, OUTPUT);
  pinMode(switchPin, INPUT);
  digitalWrite(outputPin, LOW);
}
void loop() {
  bool currentSwitchState = digitalRead(switchPin);
  if (currentSwitchState == LOW && lastSwitchState == HIGH) {
    lastSwitchState = LOW;
    digitalWrite(outputPin, LOW);
  }
  if (currentSwitchState == HIGH && lastSwitchState == LOW) {
    digitalWrite(outputPin, HIGH);
    lastSwitchState = HIGH;
    analogValue = analogRead(A1);
    Serial.println(analogValue);
  }
}
            

Alternative Version with Pull-up Enabled

// Arduino code with INPUT_PULLUP enabled
const int switchPin = A1;
const int outputPin = 2;
bool lastSwitchState = false;
int analogValue = 0;
void setup() {
  Serial.begin(9600);
  pinMode(outputPin, OUTPUT);
  pinMode(switchPin, INPUT_PULLUP);
  digitalWrite(outputPin, LOW);
}
void loop() {
  bool currentSwitchState = digitalRead(switchPin);
  if (currentSwitchState == LOW && lastSwitchState == HIGH) {
    lastSwitchState = LOW;
    digitalWrite(outputPin, LOW);
  }
  if (currentSwitchState == HIGH && lastSwitchState == LOW) {
    digitalWrite(outputPin, HIGH);
    lastSwitchState = HIGH;
    analogValue = analogRead(A1);
    Serial.println(analogValue);
  }
}
            

15. Magnetometer Sensor Guide for AnyScan209

This table provides information about smartphone magnetometer sensors and their general characteristics for use with AnyScan209.

Tip: To view information about your phone's magnetometer sensor, open Settings, go to the Update section, and select Sensor internal : help.

16. Use Your Smartphone as a Magnetic Field Detector

How to Use the Gauge and Graph Features

In AnyScan209, switch to Internal Sensor mode. Press and hold the sensor option to open advanced settings, then enable the Graph and Gauge features. Select the Bipolar Gauge display mode for real-time magnetic field visualization.

Return to the scan screen and bring your smartphone close to a device that produces a magnetic field, such as:

• Current-carrying wires
• Transformers
• Relays
• Solenoids

The gauge will respond to changes in the surrounding magnetic field. Alternating magnetic fields from AC electrical systems can cause the indicator to move in both directions, allowing visualization of magnetic field changes. DC magnetic fields may cause the indicator to move in one direction depending on the field orientation.

Educational and Practical Applications

• Educational experiments – demonstrate magnetic field principles
• Magnetic field visualization – observe field patterns in real-time
• Locating areas with stronger magnetic interference – identify sources of electromagnetic noise

Note: To locate wiring paths behind the wall, you need a good excitation field. It is recommended to have a high-power load—such as an electric heater or an electric kettle—at the end of the circuit so that a suitable inductive field is generated around the wires.

17. Practical Tips for Detecting Wires and Conduits Behind Walls

The method described above works best for cables or wires inside PVC or non-metallic conduits at shallow depths (a few centimeters). Since the magnetic field from AC current can penetrate plastic pipes, your phone's magnetometer can detect the alternating field and help trace the wiring path.

For metal conduits (steel or galvanized):
You do not need any current flowing through the wires inside the pipe. Even with no load at the end and no current passing through, the metal conduit itself creates a detectable magnetic anomaly. Because steel and galvanized pipes are ferromagnetic materials, they disturb the magnetic field around them. When you move your phone over a metal conduit, the magnetometer needle will deflect to one side (a static offset) simply due to the pipe's own magnetic signature.

Please note that Android devices use different magnetometer sensors. The performance of magnetic field measurements depends on the quality and specifications of the sensor installed in each phone.

18. Direct & Alternating Current Measurement with AnyScan209

In the scan page, when you open the bottom menu, you will see four options:

• DC Ammeter — Direct Current measurement
• DC Calibration — Direct Current calibration
• AC Ammeter — Alternating Current measurement
• AC Calibration — Alternating Current calibration

How It Works

If the current-carrying wire is placed in a proper and consistent position, you can measure the current through the magnetic field around it — exactly what current transformers (CTs) do. However, note that the position of the current-carrying wire relative to the sensor is very important, because its stability and correct calibration determine the accuracy of the measurement. Conversely, unfavorable conditions lead to inaccurate measurements.

DC Current Measurement

Before starting, press the Balancer (⚖️) icon so that the measurement field is set to zero before measuring. DC current measurement is somewhat more difficult because factors such as the presence of ferromagnetic metals nearby adversely affect accuracy.

If the initial adjustment does not give correct current, simply look at the now= value on the right side of the Calibration section and adjust it as follows:

1. Place the phone sensor on or in front of the wire.
2. Pass a known current (e.g., 1 ampere) through the wire using a laboratory power supply or any other method.
3. Note the number shown next to now=.
4. Enter that number in the Calibration input and confirm.
5. If you don't have access to 1 A, any known current works. For example, if the reading now shows 800 for 4 A, then for 1 A the calibration value is 200.

For DC, it doesn't matter if the wire is reversed and the current reading is negative — just enter the absolute value (without sign) into the calibration field.

AC Current Measurement

AC current calibration follows the same procedure as DC. However, AC measurement is highly dependent on the performance and speed of the magnetic sensor, and you may not get satisfactory results on some phone models.

Important Notes

• These measurements only work in Internal Sensor (Magnetometer) mode.
• AC measurement depends heavily on the speed and quality of the magnetometer — results may vary between phone models.
• For best results, keep the wire in a fixed, consistent position relative to the sensor.

19. Frequently Asked Questions About AnyScan209

Saeid Moghadam