Sugar house monitor

Planned functionality includes

1. Monitoring sap levels in each tank
2. Projecting time to full/empty
3. Monitoring the vacuum in the line system
4. Montitoring the stack temperature

Install/setup notes:

1. Enable UART (hardware serial) with raspi-config:
   • sudo raspi-config nonint do_serial_cons 1
   • sudo raspi-config nonint do_serial_hw 0
2. Enable a second UART port:
   • sudo vi /boot/firmware/config.txt
   • Make sure the following is at the bottom of the file (un-comment the port you want to use):

   enable_uart=1
   # dtoverlay=uart2   #TX: GPIO0 /   RX: GPIO1
   # dtoverlay=uart3   #TX: GPIO4 /   RX: GPIO5 
   # dtoverlay=uart4   #TX:CE01    /   RX:MISO
   dtoverlay=uart5   #TX: GPIO12 /   RX: GPIO13