master
└─ can (running/stopped)
   ├─ available (online/offline)
   └─ [topic] ([float])

master
├─ can
│  ├─ start ([any])
│  ├─ stop ([any])
│  └─ [topic]
│     ├─ reset ([any])
│     └─ set ([float])
└─ relays
   └─ kill_switch (pressed)
esp-total
├─ total_voltage ([float])
└─ total_current ([float]) {positive = discharge, negative = charge}

battery
├─ current {positive = charge, negative = discharge}
├─ max_cell_temp
├─ min_cell_temp
├─ soc
├─ soh
├─ temp
└─ voltage
inverter
├─ battery_voltage (read only)
├─ soc (read only)
└─ timestamp (read only)
limits
├─ max_charge_current
├─ max_discharge_current
├─ max_voltage
└─ min_voltage