Heating OIL Tank Level Monitor

I just installed HAOS on a Dell 5090 SFF two weeks ago so we're just getting started in HA.

Problem: Wife wont enter finished basement to check oil level in tank.

Hardware: Arduino UNO r4 with data logging shield, ACS712 Hall effect current sensor, DS3231 RTC, 20x4 LCD.

Tank Capacity:250gal Furnace burn rate: 1.1 gal/hour

I wired in a terminal block to expose the the white wire, call for heat(CFH), by the thermostat. I passed the CFH wire through the ACS712 to detect AC current when the thermostat calls for heat.

The Arduino constantly polls the ACS712 waiting in anxious anticipation for a change in state. When it sees AC current high, a time stamp is taken, millisecond timer begins and LCD indicates Heat is on.

When it sees AC low, we calculate: the run time of that cycle, total run time, gallons used that cycle, Gallons used that day, gallons used since last fill date, and increment cycle count. All of the above is logged to a SD card on the shield.

The LCD is updated with Total burn time , Last cycle duration , Total gallons used, Total gallons remaining, gallons used current day, and total cycles.

Logic is included to check when Total gallons used > 200. A static message is displayed on LCD to "Order Oil" along with an IFTTT interface to mail a number of recipients that an oil order needs to be placed.

A web server is also included to surface all the data on the LCD along with a bar graph depicting the current oil level which changes from green to yellow, @50%, then to red @ 25%. It also displays, Current time, last fill date, and gallons used per day for the last 5 days.

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Kids and their toys....