Click or scroll to zoom
Tap or pinch to zoom
Description
TOF that employs time-of-flight techniques to resolve distance between the emit point and the reach point of a subject, measuring the round trip time of an artificial light signal provided by a laser.
This unit integrated a distance measuring sensor VL53L0x providing accurate distance measurement whatever the target reflectance, unlike conventional technologies. It can measure absolute distances up to 2m in less than 30ms.
This unit comunicates with M5Core via I2C(0x29).
Product Features
- High precision
- Measure absolute distances up to 2m
- The wavelength of laser: 940nm
- Program Platform: Arduino, UIFlo(Blockly, Python)
- Two Lego-compatible holes
Kit includes
- 1x ToF Unit
- 1x Grove Cable
Application
- 1D gesture recognition
- Laser Ranging
- 3D structured light imaging（3D sensing）
- Camera assist (ultra fast autofocus and depth of field)
Documents
- Datasheet - VL53L0X
Learn
Example
1. Arduino IDE
The below code is incomplete(just for usage). If you want the complete code, please click here.
#include <M5Stack.h>
#include <Wire.h>
#define ToF_ADDR 0x29//the iic address of tof
#define SYSRANGE_START 0x00
#define RESULT_RANGE_STATUS 0x14
#define ToF_ADDR 0x29 //the IIC address of ToF
// declaration
uint16_t dist=0;
// initialization
M5.begin();
Wire.begin();// join i2c bus (address optional for master)
// read data
write_byte_data_at(VL53L0X_REG_SYSRANGE_START, 0x01);
read_block_data_at(VL53L0X_REG_RESULT_RANGE_STATUS, 12);//read 12 bytes once
// get distance
dist = makeuint16(gbuf[11], gbuf[10]);//split distance data to variable "dist"
2. UIFlow
If you want the complete code, please click here.
More information
Schematic
PinMap
| M5Core(GROVE A) | GPIO22 | GPIO21 | 5V | GND |
| TOF Unit | SCL | SDA | 5V | GND |
