This board is a 3-channel time-of-flight proximity and distance sensor module based on the OPT3101 IC from Texas Instruments. It emits infrared light in one of three selectable directions with its six integrated LEDs and measures distance by measuring the time delay of the reflected signal. Distance measurements can be read through a digital I²C interface. The combined field of view of the three sensing zones is almost 180 degrees, and the maximum range is about one meter.

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.

• Dimensions: 1.1″ × 1.2″ (27.9 mm × 30.5 mm)
• Weight without header pins: 2.7 g (0.095 oz)
• Operating voltage: 2.5 V to 5.5 V
• Sensor channels: 3
• Supply current: 130 mA 
• Distance measuring range: up to 1 m (3.3 ft) 

• Schematic diagram 
• OPT3101 datasheet

Package Includes:

• 1 x Pololu 3412/3680 3-Channel Wide FOV Time-of-Flight Distance Sensor Using OPT3101