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# Meteorolog
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This repository contains several applications devoted to perform data logging of sensor data from the EMM boards. 
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First, sensors are attached to an Arduino board that read data upon serial commands. Next you can choose one of two platforms to perform data logging:
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* NodeMCU + SD card: microcontroller with embedded Wifi. 
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* Arduino firmware: read sensor data via serial commands. 
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    * Example: send the string "read,t,p,h" for reading temperature, pressure and humidty. The answer will be a three comma-separated numbers.
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* NodeMCU firmware: retrieve sensor data from Arduino via software serial and perform data logging on SD card and remote server.
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	* Example: via serial monitor, execute the command "meteorolog 5 read,t,p,h <board_hash>" to start data logging with 5 minutes interval. 
		<board_hash> can be retrieved from the website http://dados.cta.if.ufrgs.br/emm.
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* Python Datalogger: read Arduino data via serial port and perform datalogging locally on the computer HD and also send data to the server. 
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