INA219-sensor

INA219 Using external shunt resistance and display readings on the web

Starting the program

• Download the code, copile and run.
• Using this tool, https://github.com/esp8266/arduino-esp8266fs-plugin upload the data files to esp flash memory.
• Add and < to credentials.h
• run the http://ina219-webserver.local/ina219.html for viewing sensor data
• INA219 needs to be connected to D1 (SCL) and D2 (SDA) of the wemos d1 mini
• Pull-up registers are required.

• Currently, we are able to send data from the esp8266+ina219 to the web-browser through websockets although the speed is quite slow. (about 10 messages/second)
• We are able to change the parameters of the INA219 through web interface
• Speed of sending data may be varied
• Incoming data is plotted on a graph
• Data is also displayed on an html table on the fly

Debugging

• Most of the web browsers already have necessary tools required which can be accessed via Right Click>Inspect menu or F9
• FSBrowser example includes embedded editor in the ESP Webserver itself. To access, goto http://ina219-webserver.local/edit
• Edit the html/java script in the browser or the esp editor. Modifications can also be done inside the browser itself, in the Console.
• Editing arduino requires more effort, as the code needs to be compiled

Description

• This program is based on the FSBrowser exapmple of https://github.com/me-no-dev/ESPAsyncWebServer In addition following libraries are also needed. they can be installed from library manager of arduino
• https://github.com/flav1972/ArduinoINA219
• ArduinoJson

To-do

So many things. A few things, in my mind are:

• Data logging to SPIFFSS
• Data logging to SD CARD, in case we need to write more data, without the fear of running out of memory
• Retreiving data from SPIFFS/SD CARD through webserver
• Downloading/Viewing Data stored in attached SPIFFS/SDCARD inside the webbrowser
• FFT of Data collected
• Sending data to Online platforms like Firebase/Thingspeak for remote monitoring and retrieval
• MQTT Support
• Some command structure ABC-XYZ

Unfortunately, i am not a professional and i do not have much time. let's see how this proceeds.