SparkFun Proximity Sensor Breakout – 20cm, VCNL4040 (Qwiic)


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Approx Restocking Date: 25 to 30 Days
SKU: 972025
  1. Qualitative Detection Range: 20cm
  2. Operates ALS and PS in Parallel Structure
  3. No Dead Zone
  4. Operating Voltage: 3.3V
  5. I2C Address: 0x60
  6. 2x Qwiic Connectors
  7. Integrated Modules: Infrared Emitter (IRED), Ambient Light Sensor (ALS), Proximity Sensor (PS)


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Brand: SparkFun
Category: Other Proximity Sensor & Modules
Tags: VCNL4040

The SparkFun Proximity Sensor Breakout is a simple IR presence and ambient light sensor utilizing the VCNL4040. This type of sensor is often seen in the automatic towel and soap dispensers or automatic faucets.

With the ability to detect objects qualitatively up to 20cm away, you will be able to detect if something is there and if it is closer or further away since the last reading.

Utilizing our handy Qwiic system, no soldering is required to connect it to the rest of your system. However, we still have broken out 0.1″-spaced pins in case you prefer to use a breadboard.

The SparkFun Proximity Sensor Breakout is a great digital alternative to the popular analog-based Sharp sensors. The VCNL4040 has no dead zone and can read all the way up to the face of the sensor. This sensor also has an ambient light sensor built in it which is excellent if you need a digital light sensor for your next glitter cannon.


  1. Integrated modules: the infrared emitter (IRED), ambient light sensor (ALS), proximity sensor (PS), and signal conditioning IC
  2. Operates ALS and PS in parallel structure
  3. FiltronTM technology adoption for robust background light cancellation
  4. Low power consumption I2C (SMBus compatible) interface
  5. Floor life: 168 h, MSL 3, according to J-STD-020
  6. No Dead Zone

Package Includes:

1 x SparkFun Proximity Sensor Breakout – 20cm, VCNL4040 (Qwiic)

SKU: 972025 Category: Tag:
Operating Voltage (VDC)

2.5 ~ 3.6

I2C Address


Qualitative Detection Range


Length (mm):


Width (mm):


Height (mm):


Weight (g):


Shipping Weight 0.01 kg
Shipping Dimensions 4 × 2 × 1 cm
1 Month Warranty

This item is covered with a standard warranty of 1 month from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: USA