The SparkFun RFD77402 Distance Sensor Breakout uses a 3D Time-of-Flight (ToF) sensor module with an 850 nm infrared VCSEL laser to provide accurate millimetre-resolution distance measurements from 100 mm to 2000 mm. Communication is via I2C with a Qwiic connector for plug-and-play use, plus 0.1" header pins for breadboard compatibility.

The sensor measures the time it takes for an infrared pulse to bounce off a target and return, enabling low-cost, high-accuracy distance sensing ideal for robotics, gesture recognition, and obstacle detection.

Key Features

• Time-of-Flight Measurement – 850 nm VCSEL laser for accurate distance readings
• 100 mm to 2000 mm Range – Millimetre resolution at short to medium distances
• Qwiic I2C Connector – Plug-and-play with no soldering required
• Breadboard Compatible – 0.1" header pins also broken out
• 8-Bit Direct Addressing – Simple I2C register access
• Class 1 Laser – Eye-safe, classified IEC 60825-1 2014

Ideal For

• Robotics obstacle detection and avoidance
• 1D gesture recognition
• Proximity and distance measurement
• Autonomous navigation systems

Package Contents

• 1× SparkFun RFD77402 Distance Sensor Breakout (Qwiic)

Resources

• Hookup Guide