RAK12014 WisBlock ToF Sensor Module Datasheet
Overview
Description
The RAK12014, a part of the RAKwireless WisBlock Sensor Series, is a Time-of-Flight (ToF) module designed based on VL53L0X from STMicroelectronics. The VL53L0X is a ToF laser-ranging module, providing accurate distance measurement up to 2 m.
The VL53L0X's 940 nm VCSEL emitter (Vertical-Cavity Surface-Emitting Laser) is invisible to the human eye and coupled with internal physical infrared filters. It enables longer-ranging distances, higher immunity to ambient light, and better robustness to cover glass optical crosstalk.
Features
- Time-of-Flight(ToF) module
- Measures absolute range up to 2 meters
- I2C Interface
- Xshutdown (reset) and interrupt GPIO
- 2.6 V ~ 3.5 V power supply
- Current Consumption: 3 uA - 19 mA
- Chipset: STMicroelectronics VL53L0X
- Module Size: 10 mm x 10 mm
Specifications
Overview
Mounting
Figure 1 shows the mounting mechanism of the RAK12014 module on a WisBlock Base board. The RAK12014 module can be mounted on the slots: C, D, E, & F.
Figure 2452: RAK12014 WisBlock ToF Sensor Module MountingHardware
The hardware specification is categorized into five (5) parts. It shows the chipset and the pinouts and their corresponding functions and diagrams of the module. It also covers the electrical and mechanical parameters that include the tabular data of the functionalities and standard values of the RAK12014 WisBlock ToF Sensor Module.
Chipset
| Vendor | Part number |
|---|---|
| STMicroelectronics | VL53L0X |
Pin Definition
The RAK12014 WisBlock ToF Sensor Module comprises a standard WisBlock connector. The WisBlock connector allows the RAK12014 module to be mounted to a WisBlock Base board. The pin order of the connector and the pinout definition is shown in Figure 2.
- I2C related pins: XSHUT(RESET), INT, 3V3_S, and GND are connected to WisBlock connector.
- 3V3_S voltage output from the WisBlock Base that powers the RAK12014 module can be controlled by the WisBlock Core via WB_IO2 (WisBlock IO2 pin). This makes the module ideal for low-power IoT projects since the WisBlock Core can totally disconnect the power of the RAK12014 module.
Figure 2453: RAK12014 WisBlock ToF Sensor Module PinoutIf a 24-pin WisBlock Sensor connector is used, the IO used for the output pulse depends on what slot the module is plugged in. The following table shows the default IO used for different slots:
INT (Interrupt Pin)
| SLOT C | SLOT D | SLOT E | SLOT F |
|---|---|---|---|
| WB_IO3 | WB_IO5 | WB_IO4 | WB_IO6 |
SHUT (Shutdown Pin)
| SLOT C | SLOT D | SLOT E | SLOT F |
|---|---|---|---|
| WB_IO4 | WB_IO6 | WB_IO3 | WB_IO5 |
Electrical Characteristics
Absolute Maximum Ratings
| Parameter | Minimum | Maximum | Unit |
|---|---|---|---|
| 3V3_S | -0.5 | 3.6 | V |
| Imax | - | 40 | mA |
Power Supply Ratings
| Symbol | Description | Condition | Min. | Nom. | Max. | Unit |
|---|---|---|---|---|---|---|
| 3V3_S | supply Voltage | Input voltage must within this range | 2.6 | 3.3 | 3.5 | V |
| IDD1 | Operation mode current | Timed ranging inter measurement | - | 16 | - | uA |
| IDD2 | Operation mode current | Active Ranging average consumption (including VCSEL) | - | 19 | - | mA |
| IDD3 | Operation mode current | HW STANDBY | 3 | 5 | 7 | uA |
| P | Power Dissipation | Average power consumption at 10Hz with 33 ms ranging sequence | - | - | 20 | mW |
Mechanical Characteristics
Board Dimensions
Figure 3 shows the dimensions and the mechanical drawing of the RAK12014 module.
Figure 2454: RAK12014 WisBlock ToF Sensor Module DimensionsWisConnector PCB Layout
Figure 2455: WisConnector PCB Footprint and RecommendationsSchematic Diagram
Figure 2456: RAK12014 WisBlock ToF Module Schematic- Field Of View (FOV) and Reflectance targets will affect the measuring distance and accuracy.
- To get better performance, you may need to apply algorithms for the object being measured. But for usual measurements, the default output is sufficient.
