Hello!
This video demonstrates how my patch used to indicate low battery alarms by using the led flasher feature works. You can find the source code for this feature here:
http://www.multiwii.com/forum/viewtopic.php?f=7&t=4569
I hope that the multiwii maintainers like the feature and that it will be integrated in the trunk for multiwii 2.4.
Thanks 4 watching!