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RADAR Lidar System VL53L0X Laser Time-of-Flight
2026-09-11 | By Ron Cutts
License: GNU Lesser General Public License Distance I2C / TWI Arduino ESP32
In this tutorial, we will learn how to make a RADAR Lidar system using the VL53L0X Laser Time-of-Flight sensor.
Watch the video!
Learn more about Visuino: What is Visuino
What You Will Need
Arduino UNO (or any other Arduino)
Visuino program: Download Visuino
The Circuit
Connect OLED Display pin[VCC] to Arduino pin[5V]
Connect OLED Display pin[GND] to Arduino pin[GND]
Connect OLED Display pin[SDA] to Arduino pin[SDA]
Connect OLED Display pin[SCL] to Arduino pin[SCL]
Connect TimeOfFlight Sensor pin[VCC] to Arduino pin[3.3V]
Connect TimeOfFlight Sensor pin[GND] to Arduino pin[GND]
Connect TimeOfFlight Sensor pin[SDA] to Arduino pin[SDA]
Connect TimeOfFlight Sensor pin[SCL] to Arduino pin[SCL]
Connect Servo motor "Orange" pin to Arduino Digital pin[7]
Connect Servo motor "Red" pin to Arduino positive pin[5V]
Connect Servo motor "Brown" pin to Arduino negative pin[GND]
Attach TimeOfFlight Sensor with a duct tape to the servo motor.
Start Visuino, and Select the Arduino UNO Board Type
The Visuino: https://www.visuino.eu needs to be installed. Start Visuino as shown in the first picture Click on the "Tools" button on the Arduino component (Picture 1) in Visuino When the dialog appears, select "Arduino UNO" as shown on Picture 2
In Visuino Add Components
Add "Time Of Flight Laser Ranger VL53L0X' component
Add "Divide Analog By Value' component
Add "Analog To Unsigned' component
Add "SSD1306/SH1106 OLED Display (I2C)' component
Add "Clock Generator" component
Add "Triangle Analog Generator' component
Add "Clock Generator" component
Add 2X "Compare Analog Value" component
Add "Map Range Analog" component
Add "Servo" component
Add "Inverse Analog (Change Sign)" component
Add "Analog Multi Source" component
In Visuino Set Components
Select "DivideByValue1" and in the properties window set Value to 2
Select "ClockGenerator1" and in the properties window set Frequency to 5
Select "TriangleAnalogGenerator1" and in the properties window set Frequency to 0.1
Select "CompareValue1" and in the properties window set Compare Type to "ctBiggerOrEqual" and Value to 0.98
Select "CompareValue2" and in the properties window set Compare Type to "ctSmallerOrEqual" and Value to 0.02
Select "MapRange1" and in the properties window set "Output Range" > "Max" to 180
Double click on the DisplayOLED1 and in the Elements window
Drag "Draw Angled Line" to the left
In the properties window set "Angle" to -10, "End" to 60, "X" to 64, "Y"to 63
Click on the "Angle" pin icon and select "FloatSinkPin"
Click on the "End" pin icon and select "IntegerSinkPin"
Drag "Fill Screen" to the left side in the elements window
Close the Elements window
In Visuino Connect Components
Connect LaserRanger1 pin Sensor I2C to arduino board pin I2C In
Connect DisplayOLED1 pin I2C Out to arduino board pin I2C In
Connect LaserRanger1 pin Distance (mm) to DivideByValue1 pin In
Connect DivideByValue1 pin Out to AnalogToUnsigned1 pin In
Connect AnalogToUnsigned1 pin Out to DisplayOLED1>Draw Angled Line1 pin End
Connect ClockGenerator1 pin Out to TriangleAnalogGenerator1 pin Clock
Connect TriangleAnalogGenerator1 pin Out to CompareValue1 and CompareValue2 pin In
Connect TriangleAnalogGenerator1 pin Out to MapRange1 and Servo1 pin In
Connect CompareValue1 and CompareValue2 pin Out to DisplayOLED1>Fill Screen1 pin Clock
Connect MapRange1 pin Out to AnalogMultiSource1 pin In
Connect Servo1 pin Out to Arduino digital pin 7
Connect AnalogMultiSource1 pin [0] to Inverse1 pin In
Connect AnalogMultiSource1 pin [1] to DisplayOLED1>Draw Angled Line1 pin Clock
Connect Inverse1 pin Out to DisplayOLED1>Draw Angled Line1 pin Angle
Generate, Compile, and Upload the Arduino Code
In Visuino, at the bottom click on the "Build" Tab, make sure the correct port is selected, then click on the "Compile/Build and Upload" button.
Play
If you power the Arduino UNO module, the OLED Display will start to show the Radar distance, and the servo motor will turn left and right.
Congratulations! You have completed your project with Visuino. Also attached is the Visuino project that I created for this. You can download it and open it in Visuino: https://www.visuino.eu
Check My Other Projects
Please take a moment to check out my other Cool Project here: https://www.instructables.com/member/RonFrtek/instructables/
