Notice: This repository is protected with license, corporate/commercial use is restricted.

Interfacing Node MCU with LMT84LP temperature sensor and controlling Actuator

What does it do?

Following objective is achieved:

1. For monitoring temperature sensor readings on Graphite:

No.	Operation	File name
1.	a) Read temperature readings from LMT84 temperature sensor.	read_sensor_update_server.lua
2.	a) Read temperature sensor data from HTTP server (Node MCU). b) Trigger an E-mail if event happens	read_sensor_trigger_email.py
3.	a) Push Data to Graphite	feed_data_tographite.sh

2. For storing temperature readings in SQL and controlling actuator:

No.	Operation	File name
1.	a) Read temperature readings from LMT84 temperature sensor. b) Allow access of temperature with the help of REST APIs c) Allow control of actuators through Rest APIs	rest_api_control.lua
2.	a) Read temperature sensor data from HTTP server (Node MCU). b) Trigger an E-mail if event happens	read_sensor_trigger_email.py
3.	a) Push temperature Data to SQL (And control actuators on web app, plus plot the data)	push_pull_app.cpp

How to use?

1. Load .lua file to node MCU.
2. Compile .py file in terminal.
3. Do "make all" in repository folder. It will generate pull_push_app binary, which have to be started at system boot time (wrap this binary with a script kept in init.d).

Supported REST APIs

No.	HTTP Method	REST APIs	Description
1.	POST	http://nodemcu/power/{PowerLevel}	Sets power level of actuator. Valid Power levels are: on, off, one, two and three.
2.	GET	http://nodemcu/temp?sensor={SensorNo}	Gets temperature from sensor. Valid sensor numbers for this project are: 1, 2, 3 and 4.

Block Diagram of circuit

Environment

1. Node MCU v0.9 and Python 2.7.3
2. GCC 5.4

Demo Video

Following is a demo video, shows temperature sensor data plotted on Graphite: