Lightmeter / Flashmeter for Photographers

I want to present you an exposure meter that is fairly cheap, accurate and has all the necessary functions. The lightmeter based on Arduino as a main controller and BH1750 as a metering cell. Information is displayed on SSD1306 OLED display. The device is powered by 2 AAA batteries.

Functions list:

• Ambient light metering
• Flash light metering
• ND filter correction
• Aperture priority
• Shutter speed priority
• ISO range 8 – 4 000 000
• Aperture range 1.0 – 3251
• Shutter speed range 1/10000 – 133 sec
• ND Filter range ND2 – ND8192
• Displaying amount of light in Lux.
• Displaying exposure value, EV
• Recalculating exposure pair while one of the parameter changing
• Battery information
• Power 2xAAA LR03 batteries

Project page on Github: https://github.com/vpominchuk/lightmeter

and on my site: https://www.pominchuk.com/lightmeter/