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NodeMCU-DHT11

Software that enables a NodeMCU to read data from a DHT11 sensor and send it via HTTP requests to a webserver.

Firmware requirements

The required firmware was build using: https://nodemcu-build.com/ The modules included are:

• crypto
• DHT
• file
• GPIO
• HTTP
• net
• node
• timer
• UART
• WiFi

Configuration

After uploading the software to your NodeMCU you have to set a couple of configuration. You can set those a couple of ways:

1. Reset the NodeMCU (which creates a dummy config) download the config.cfg, reupload it and reset.
2. Edit the field on the serial console and execute configHandler.saveConfiguration() once you're done.

The options you need to set:

• config.wifi.SSID - The name of the wifi station to connect to.
• config.wifi.PASSWORD - The password to authenticate to the station.
• config.crypto.KEY - The key used to encrypt the HTTP bodies. Please chose a strong one. Encrypt everything!
• config.sensors.dht11.NAME - Where NAME is what you would like the sensor to be named. A primary one is created by default. You can add multiple sensors.
• config.sensors.dht11.PIN - Where PIN is the digital out your dht11 is connected to. For primary this is 6.
• config.sensors.dht11.ID - An unique ID of your dht11 is connected to. For primary this is 1.
• config.main.IS_CONFIGURED - While this is set to false no logic is executed. Set this to true once you have everything configured!