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Adafruit VCNL4030 Proximity and Lux Sensor - STEMMA QT / Qwiic
The VCNL4030 is a handy two-in-one sensor, with a proximity sensor that works from 0 to 300mm (about 12 inches) and light sensor with range of 0.004 to 16,768 lux.
We've all been there. That thing is close but how close? When you need to measure a small distance with reasonable accuracy, such as the rough height of particularly calm bumble bee, the VCNL4030 Proximity Sensor from Vishay can do that for you. If perchance you also needed to measure the amount of light at the same time, perhaps to let the bee to know if it's time for bed, you're in luck! The VCNL4030 can do that too (bumble bee not included, we tried putting it in the anti-static bag but it started buzzing in a threatening manner)
Note there's quite a few chips in the VCNL4xxx series, with varying ranges and prices. While the sensors look and sound similar, the firmware for these chips is not identical, so you cannot swap the VCNL4030 for VCNL4040 or others without recompiling with the respective libraries!
The VCNL4030 has a nice set of configuration knobs that let you tweak both the proximity sensor (PS) and light sensor (ALS) - for example integration time, dynamic range and sensitivity. Higher integration times mean slower conversion but you can measure dimmer light more precisely. Conversely shorter times mean fast conversion, and can measure brighter lights without oversaturating the sensor. For proximity you can also set up the duty cycle and built-in IR LED current. This lets you balance conversion speed, measurement range, precision and power usage as necessary.
User Manual / Datasheet / Example Codes Etc.
Specifications
- Operating Input Voltage: 3–5 V DC
- Sensor Voltage: 3.0 V
- Onboard Regulator: 3–5 V input to 3 V sensor supply
- 3.3 V Output Up to: 100 mA
- Ambient Light Range: 0.004–16,768 lux
- Sensor Type: Proximity + Ambient Light (Lux)
- Proximity Range: 0–300 mm (approx. 12 inches)
- Product Dimensions: 25.5mm x 17.7mm x 4.7mm / 1.0" x 0.7" x 0.2"
- Product Weight: 1.7g / 0.1oz
Package Includes
- 1x Adafruit VCNL4030 Proximity and Lux Sensor - STEMMA QT / Qwiic
