Simple Smart Meter based on the ESP8266 SDK example. measures how long a pin is pulled down and send this information to a PHP script which is saving the data into a SQL database. There is also a frontend based on visualization.
flash bins to the corresponding adresses start the chip, you might want to test AT+GMR, it should tell you that it is the DataLogger. Also you now have a AT+HELP command
create SQL database table
CREATE TABLE heating (
moment DATETIME NOT NULL ,
duration DOUBLE NOT NULL ,
outside_temp DOUBLE NOT NULL ,
wind DOUBLE NOT NULL
) ;
upload content of "www" to a webserver, make sure you edit those files to have your SQL credentials etc in there.
activate system
AT+CSTARTLOG=[],"<TCP/UDP>","",
example
AT+CSTARTLOG=2,"TCP","www.whatever.com/SmartMeter/new_value.php?o=Tokio",80