ChipKIT is great development board with Arduino spirit. Just it uses 32-bit PIC microcontroller and has more flash and RAM memory. If have one here is a nice project based on ChipKIT UNO32. The only additional component to this project is DHT11 temperature and humidity sensor. It can be plugged directly in to ChipKIT header and be read.
ChipKIT simply reads data from sensor and pushes it to serial interface. Not so much of performance requirements. The fun part is on PC side. The GUI is written in processing where nice window indicates current temperature in Celsius and Fahrenheit and relative humidity %. When Start Log button is pressed it starts logging these values along with time stamps. Great project for learning and fast use.