LIGHTMK3 Yocto Light-V3 – Lux Meter


Ambient light sensor (luxmeter), for measuring light intensity from 0 to 100’000 lux, with built-in data logger.

SKU: LIGHTMK3 Categories: ,


The LIGHTMK3 Yocto Light-V3 – Lux Meter is a Swiss-made USB ambient light sensor (lux meter) which allows you to you measure ambient light up to 100’000 lux. Measurements can be directly read via USB or stored on the device internal flash for later retrieval when connected again by USB.

This device is a replacement for the Yocto-Light V1 which is not produced anymore. THe response to light is closer to human eye than the Yocto Light-V2.

This circuit has been designed so that the sensor itself can be moved further away from the USB by a few meters: simply split the board into two parts and solder a 4-wire cable on the designated pads.

This device can be connected directly to an Ethernet network using a YoctoHub Ethernet, to a WiFi network using a YoctoHub Wireless-g, it can even be connected to a GSM network thanks to the YoctoHub GSM.

USB cables and enclosure to be ordered separately LIGHTMK3 Yocto Light-V3 – Lux Meter


Specifications of LIGHTMK3 Yocto Light-V3 – Lux Meter

Manufacturer Product Number – LIGHTMK3
Product name – Yocto-Light-V3
Width – 20mm
Length – 35.5mm
Weight – 3g
Sensor – BH1751FVI
USB connector – Micro-B
Refresh rate – 4Hz
Measuring range – 0…100’000lux
Sensitivity – 0.25lux
Supported Operating Systems – Windows, Linux (Intel + ARM), Mac OS X, Android
Drivers – no driver needed
API / SDK / Libraries (USB+TCP) – C++, Objective-C, C#, VB .NET, Delphi, Python, Java/Android
API / SDK / Libraries (TCP only) – Javascript, Node.js, PHP, Java
RoHS – yes
Suggested enclosure – YoctoBox-Short-Thin-Black
Cables and enclosures available separately
Made in Switzerland

Additional information

Weight 0.1 lbs
Dimensions 2.5 × 1 × 1 in


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