MIKROE-2509

LightRanger 2 click PID: MIKROE-2509 Weight: 22 g LightRanger 2 click carries VL53L0X IC from STMicroelectronics, the word’s smallest Timeof-Flight ranging and gesture detector sensor. The click is designed to run on either 3.3V or 5V power supply. LightRanger 2 click communicates with the target microcontroller over I2C interface and the following pins on the mikroBUS™ line: RST, INT. Measuring range The VL53L0X sensor can measure absolute distances up to 2m. Reported range is independent of the target reflectance.   FlightSense™ The VL53L0X integrates a leading-edge SPAD array (Single Photon Avalanche Diodes) and embeds ST’s second generation FlightSense™ patented technology. FlightSense™ technology measures the time it takes for a photon to reach the nearest object. The photon travel time is multiplied by the speed of light, and from there a distance is calculated. The photon travel time is not affected by reflectance, and this kind of technology is immune to ambient illumination and optical path variations. VCSEL emitter The VL53L0X’s 940nm VCSEL emitter (Vertical Cavity Surface-Emitting Laser), is totally invisible to the human eye, coupled with internal physical infrared filters, it enables longer ranging distance, higher immunity to ambient light and better robustness to cover-glass optical cross-talk. Power consumption The average power consumption at 10MHz is 20mW, and while in standby mode the typical power consumption is around 5uA. Key features    VL53L0X module   o Measures absolute range up to 2m  o Range is independent of the target reflectance  o Operates in high infrared ambient light levels  o Dimensions: 4.4 x 2.4 x 1.0mm  Interface: I2C  3.3V or 5V power supply   Pinout diagram This table shows how the pinout on LightRanger 2 click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes    Pin  Pin  Notes  mikroBUStm  Not connected  NC  Enable  EN  1  AN  PWM 16 NC  Not connected  2  RST  INT  15 INT Hardware interrupt  Not connected  NC  3  CS  TX  14 NC  Not connected  Not connected  NC  4  SCK  RX  13 NC  Not connected  Not connected  NC  5  MISO  SCL  12 SCL I2C serial clock input  Not connected  NC  6  MOSI  SDA  11 SDA I2C serial data  Power supply  +3.3V  7  3.3V  5V  Ground  GND  8  GND  GND 10 +5V Power supply  9 GND Ground  Programming The code initializes the click and sets it in continuous conversion mode. Range data is read continuously and printed on UART. 01 02 03 04 05 06 07 tof_init(true); tof_set_timeout(500); tof_start_continuous(0); Uart_Write_Text("TOF readyrn"); while(1) 08 09 10 11 12 13 14 15 16 17 18 { range = tof_read_range_continuous_millimeters(); WordToStr(range, txt); Uart_Write_Text("Range: "); Uart_Write_Text(txt); Uart_Write_Text("rn"); if (tof_timeout_occurred()) Uart_Write_Text("TIMEOUTrn"); } https://shop.mikroe.com/click/sensors/lightranger-2 2/24/2017