In modern world computers and phones play an integral role and eyes take on the greatest associated load. To keep eyesight at its best, one need to take care of eyes every day. My "Eye care kit" will help to will help to automate the process of eye care and greatly simplify the acquisition of information about environmental conditions, the ones important to the eyes.
To use the kit, you need to connect all the elements according to the circuit diagram (part Schematics). Here is the photo of the ready Arduino with all the elements:
How the code is working: it continuously provide info about luminosity, temperature and humidity. As for the comfort of eyes the level of the humidity in the room should be >80% and the level of the luminosity should be >500KΩ, red led will let you know if any of these parameters don't meet up the requirements for comfortable work. When the button is pressed, the counting process is started: after 55 min the leds (green and yellow) will shine during 5min, it works during 3hours. Green and yellow colours help to relax eyes, so shining leds will help your visibility and take a short rest. Here is the video of how it works: