Arduino Hygrometer 8x2 LCD screen

Here's a simple hygrometer using a DHT sensor, an 8x2 LCD 8bit LCD screen, a atmega328p, and a 9volt battery. You can see the changes as I blow hot air towards it. It'll even report "nan" when the sensor has failed giving data
This code/hardware would be great for an indoor/outdoor garden or home automation
pastebin.com/A...