This board is a 3-channel time-of-flight proximity and distance sensor module based on the OPT3101 IC from Texas Instruments. Unlike conventional IR sensors that use the intensity of reflected light to estimate the distance to an object, this board emits 940 nm infrared light pulsed at 10 MHz, and then measures the phase (delay) of the reflected signal, which corresponds to the distance to the target object. It also measures the amplitude of the signal, which indicates how bright/reflective/close the object is.
This board has three channels that each cover approximately 50° to 60°, giving the sensor a wide field of view (FOV). In favorable conditions, the sensor can measure objects at distances up to 1 m. Distance measurements are available through the sensor’s I²C interface, which is also used to configure the sensor.
This module is designed to be mounted onto the 7-pin connector on the front of a TI-RSLK MAX chassis board, but it can be used with any I²C-capable device. The board can be powered from a 2.5 V to 5.5 V supply. On-board regulators supply the 3.3 V logic voltage to the OPT3101. The board includes a circuit that shifts the I²C clock and data lines to the same logic voltage level as the supplied VIN, making it simple to interface the board with 3.3 V or 5 V systems, and the board’s 0.1? pin spacing makes it easy to use with standard solderless breadboards and 0.1? perfboards.
Details for item #3680
This product ships fully populated with its SMD components (including the OPT3101) and through-hole male header pins. A 7-pin female header and two mounting screws (#2-56, 5/8?) and nuts are also included, as shown in the main product picture. We also carry a version of this module without headers.
- Size: 1.1? × 1.2?
- Weight: 2.7 g
- Maximum range: 1 m1
- Channels: 3
- Interface: I²C
- Minimum operating voltage: 2.5 V
- Maximum operating voltage: 5.5 V
- Supply current: 130 mA2
- Header pins soldered?: Y
- PCB dev codes: irs15j
- Other markings: 0J12947
- 1. Effective range depends on several factors including target size and reflectivity.
- 2. Typical average during operation in high-brightness mode with 3.3 V power supply.