ProfJayHam

/* HTU_logger_3.ino
RH and Temp data logger for the Arduino using a Adafruits HTU21D breakout board and 
datalogger shield
J. Ham, Colorado State Univesity
last revision: 11/05/2015

Desciption: Program gets Temperature and RH from HTU21D sensor at a user-defined
interval (5s default) and saves the result to SD card with time stamp obtained from the RTC. 
Also calculates and saves Dewpoint temperature as calculated with user-defined function. 
The program waits to start unitl 0 seconds into a 1 min interval.

ProfJayHam

/* HTU_logger_stat_V1.ino
RH and Temp data logger for the Arduino using a Adafruits HTU21D breakout board and 
datalogger shield. Includes statistics - averages data over user defined intervals
J. Ham, Colorado State Univesity
last revision: 11/05/2015

Desciption: Program gets Temperature and RH from HTU21D sensor at a user-defined
interval (5s default), calculates averages over a user-defined interval (10 min default),
and saves the result to SD card with time stamp obtained from the RTC. 
Also calculates and saves Dewpoint temperature as calculated with user-defined function. 

ProfJayHam

/*
weather_station_logger_xxxx13.ino
Jay Ham
Colorado State University
jay.ham@colostate.edu

Weather station data logger Program
Reads and logs all primary weather variables, including:
Air Temperature, Humidity, Wind Speed, Wind Direction, Global Irriadiance, and Precipitation. 
Samples sensors every 5 s and stores 5 min statistics on sd card