AnyScan209 – Free 3D Ground Scanner & Magnetometer App for Android

AnyScan209 is a professional free Android magnetometer app that transforms your smartphone into a powerful 3D ground scanner. Designed for geophysical surveys, magnetic field visualization, and underground anomaly detection, this app supports both internal smartphone sensors and external Bluetooth modules like HC-05.

With AnyScan209, you can perform 2D and 3D subsurface mapping, export data in OBJ, STL, and CSV formats, and analyze magnetic field variations with precision. Whether you're a researcher, educator, or hobbyist, this free ground scanner app provides professional-grade geophysical analysis tools right on your Android device.

1. How to Create a Scan File in AnyScan209

The AnyScan209 3D ground scanner 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 subsurface mapping and magnetic field analysis.

Enter a file name if required and select the Create Scan option. The top menu includes Open Scan, Export (OBJ, STL, CSV), 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 geophysical 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 magnetic field surveys.

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

3. 2D Visualization Features for Magnetic Field Analysis

The 2D menu provides different visualization tools including:

• Smoothing – reduce noise in magnetic field data
• 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

Users can compare different visualization modes to better analyze magnetic field variations and data patterns in their subsurface scans.

4. 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 subsurface layers
• Lighting control – enhance visual clarity
• Texture selection – customize surface appearance
• Different map display modes – choose the best representation for your data

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

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

6. 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 magnetic field measurements.

7. 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 geophysical measurements and magnetic field detection.

8. Schematic Diagram – External Sensor Connection

9. 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 → 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);
  }
}

10. Magnetometer Sensor Guide for AnyScan209

This table provides information about smartphone magnetometer sensors and their general characteristics for magnetic field analysis using AnyScan209.

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

11. 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

This feature can be useful for:

• 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.

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.

12. Frequently Asked Questions About AnyScan209

Saeid Moghadam