Hi!
I would like to use the timeAlarms library to call a function at a specific time. I know how to set a alarm but is it possible to reset the alarm? I simply want to change the time when the alarm is triggered.
Can anybody tell me whether / how this can be done?
Have a look at the readme that comes with the TimeAlarms library. It describes low level functions to manage alarms, including a function to disable an alarm. You could, therefore, reset an alarm to prevent it occurring and set another one in its place.
Thank you for your answer. I read something similar already but if you just disable the alarm it still counts as a alarm. Due to the maximum number of alarms (6 alerts) i really need to delete or reset the alarm!
How many alarms do you need ?
Look at this line in TimeAlarms.h
#define dtNBR_ALARMS 6 // max is 255
Ok that should be enough 
Nevertheless is there any possibility to do this properly and delete the unnecessary alarms?
What type of alarm do you want to reset ?
I want to reset a alarm like this one:
Alarm.alarmOnce(hours, minutes, seconds, function);
The alarm should trigger only once at a certain time.