Label: nodemcu open-source wifi socket --- # Introduction [https://github.com/lewei50/lua-on-nodemcu/tree/master/demo/ESP8266-ACMETER-SWITCH][1] Provide nodmecu source codes & Schematic diagram PDF. Features: Secondary development could be done based on nodemcu. It can be used on DeviceBit(with current codes) or other platform(modify codes by yourself). Disadvantages: there are minor whistles with the current version. Video: [Open-source WiFi Socket for DeviceBit](http://v.youku.com/v_show/id_XMTc3NzgyNjY0MA==.html?spm=a2h0k.8191407.0.0&from=s1.8-1-1.2&qq-pf-to=pcqq.c2c) # Procedures The procedures for this socket are devided into two steps: 1 Flash firmware 2 Web configuration Please see the following detais: ## Flash Firmware 1 Download Firmware Download Address [bin](https://github.com/lewei50/lua-on-nodemcu/tree/master/demo/ESP8266-ACMETER-SWITCH/firmware) Source code on github: [https://github.com/lewei50/lua-on-nodemcu/tree/master/demo/ESP8266-ACMETER-SWITCH/software](https://github.com/lewei50/lua-on-nodemcu/tree/master/demo/ESP8266-ACMETER-SWITCH/software)  2 Download flash tool The flash tool used this time is esptoolpy esptool.py download [https://nodemcu.readthedocs.io/en/dev/en/flash/](https://nodemcu.readthedocs.io/en/dev/en/flash/) 3 Steps When you install the python script, use the USB line to power the socket, and then run the following command: esptool.py --baud <baud rate> --port<serial-port> write_flash -fm dio -fs 32m 0x00000 <NodeMCU firmware> For example: esptool.py --baud 230400 --port COM7 write_flash -fm dio -fs 32m 0x00000 "D:\SVN\BIN\ESP8266_ACMETER_CONTROL.bin" pause  As shown in the picture above, when you see the "Leaving" in the window, press any key to continue, then this procedure is complete. ## Web Configuration 1 Sign up one account: [http://www.devicebit.com ](http://www.devicebit.com/)  2 Login to the system, add the device and sensor (Please refer to the above chapter) Please make the following things ready: Add 3 sensors on DeviceBit, the IDs are "AI0", "AI1", "AI2", all under device 01. Steps: Add the device, as the picture shown below: ID: 01(This ID is very important, for it will be used later). Name: Testing Socket, Cotrollable: tick Yes, click on "Use API address" then API address and Internet IP will appear automatically.  Add sensors: Volt, Power, and Energy    Add 1 controller, ID: "DO", name: "Socket"  Then you can go to "My Devices"-"Devices"-"Sensors&Controllers" to check the above 3 sensors and 1 controller.   3 WiFi Configuration Long press the button on the socket above the indicator light, flash button: more than 3 seconds until the green light turns red. Search WiFi signal on your PC, if you find the SSID which begins with ESP8266_#####, click on it and connect.  Password: 12345678  Enter 192.168.4.1 in your browser, then the following picture will appear:  Enter the ID 01 of your device just added for "gateway", then find your Userkey in the user center "My account"-"Account Setting". Fill in the SSID and the correct password you can access.  After saving, if all of these are correct, the ESP8266_XXXXX of this SSID will automatically disappear. It will appear again when there is no Internet connection. That is to say, if you want to change a WIFI connection, then turn off the WIFI that it is connecting and reconfigure it.  About two minutes later, you will find real-time data of voltage, power and power consumption on DeviceBit.  Go to "My Devices" - "Centralized Monitoring", you can click on the switch button on the page to control socket and electrical appliance on it remotely!  [1]: https://github.com/lewei50/lua-on-nodemcu/tree/master/demo/ESP8266-ACMETER-SWITCH