NodeMCU WebServer Relay

Web server on NodeMCU ESP8266 dev board for controlling IO pins.

Features

• Relay control (IO pin control) via webserver interface with the wifi module working in mode client.
• Support setting of up to schedules for on/off IO pin by day/hour/minute via webserver interface.
• Schedule can run without internet connection (RTC drift time to be tested).
• Automatically synchronize with NTP server for accurate RTC.
• Previous states and schedules are stored in eeprom.

Setting up

• Allow to control an IO pin via webserver (I connected the D1 pin to control relay).
• Button with pull-up resistor on D2 pin.
• After starting up, the board must connect to internet at least once to synchronize RTC and enable schedule setting (modify the NTP server and timezone in the webserver.h)

Commands

• log on : toggle log on.
• log off : toggle log off.
• wifi set [my_ssid+my_pwd] : set wifi ssid and password.
• relay on : switch on the relay pin.
• relay off : switch off the relay pin.
• relay status : get the actual relay status.
• schedule add : add schedule.
• schedule delete [id] : delete schedule.
• schedule get : display all registered schedule.
• device reset : reset device.

Demo