Alerts and alarms

There are 2 battery level alerts, both are set as cell voltage so independent from cell count. Battery level 1 should be set higher than battery level 2.

When cell voltage falls below level 1 it will trigger a vocal alert and the V next to the cell voltage will start blinking: once triggered blinking will persist even if the voltage raises above level 1.

When cell voltage falls below battery level 2 it will trigger a second vocal alert and the cell voltage digits will start blinking: once triggered blinking will persist even if the voltage raises above level 2.

If the battery reaches the failsafe level (it must be configured in mission planner) the script will display "batt failsafe" on the hud and play a vocal alert every n seconds (period can be configured from the menu).

It's also possible to configure a timer that will trigger a vocal alert every n minutes of flight time.

The script also support a "vocal fence" feature by setting a minimun altitude, a maximum altitude and a maximum distance alert. When the vehicle moves outside of the fence the script will play a vocal alert every n seconds.

Note: (applies to versions 1.7.1 and above) The battery monitoring engine has been modified to allow the voltage to drop below level for up to 4 seconds before triggering the alert. During this period the voltage background will flash to indicate that the alarm is about to fire, if during this "grace" period the voltage raises above level the alarm is reset.