Wood pellet hopper level

If, like me, you heat your home using wood pellet furnace, you should know that the price of this fuel has recently risen significantly in my country. This prompted me to monitor my consumption. I tried logging my consumption in a notebook, but it didn't really give me a clear picture. So, I decided to build a device to measure the level of fule in the hopper. It consists of a measuring unit (a laser sensor and an Arduino Nano) and a datalogger located 30 meters away, built using an Arduino UNO, an Ethernet extension, and an RTC (real-time clock). The level and time of the measurement are recorded once a day on an SD card. Consumption is presented as a graph (over the last 30 days) on web page provided by arduino. The project is currently in the testing phase.