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HOME / PRODUCT CATEGORIES / PROXIMITY / SPARKFUN DISTANCE SENSOR BREAKOUT - RFD77402 (QWIIC)
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SparkFun Distance Sensor Breakout -
RFD77402 (Qwiic)
SEN-14539 ROHS
DESCRIPTION FEATURES DOCUMENTS
Operating Voltage 3.3V
Current 7 mA average at 10Hz
Measurement Range: ~50mm to 2,000mm
Precision: +/-10%
Light Source: 850nm VCSEL
IC Address: 0x4C
Field of View: 55°
Field of Illumination: 23°
Max Read Rate: 10Hz (We’ve seen up to 20Hz in practice)
2x Qwiic Connection Ports
2
Tags
BREAKOUT DISTANCE I2C INFRARED PROXIMITY QWIIC RFD77402
SENSOR SIMBLEE TOF
SparkFun Distance Sensor Breakout - RFD77402 (Qwiic) Product Help and Resources
TUTORIALS VIDEOS SKILLS NEEDED
Qwiic Distance Sensor
(RFD77402) Hookup Guide
APRIL 5, 2018
The RFD77402 uses an infrared
VCSEL (Vertical Cavity Surface
Emitting Laser) TOF (Time of
Flight) module capable of
millimeter precision distance
readings up to 2 meters. It’s also
part of SparkFun’s Qwiic system,
so you won’t have to do any
soldering to figure out how far
away things are.
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Customer Comments
COMMENTS 5REVIEWS 0
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Talobab / about 5 months ago / 1
Easy to setup and use, but I’m seeing +/- 6mm when 250 mm away… so don’t expect a solid reading.
Englandsaurus / about 5 months ago / 1
What is the object you are detecting the distance from out of curiosity?
Talobab / about 5 months ago / 1
I tried it with several different objects to start, but for the final testing I used a white wall. Actually, if
you look at your hookup guide, you’ll even see similar numbers in the screenshots there… I just
didn’t catch that detail when I was reading it…
Member #413976 / about 5 months ago / 1
Could this be used as a water level sensor, or would the signal just go through the water?
VonChurdhousen / about 5 months ago / 1
I’ve seen the Lidar Lite go through glass. Depends on the attenuation coefficient for water at the
wavelength, but in general it’s not 100% for near ir. I would go with sonar for measuring water level. You
could also float a reflector of appropriate material on the surface of the water if you want to use ir or are
concerned about the wide beam angle from sonar.
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