ESP8266 Community Forum

Hi all,
I have a question about the clever TimeAlarms library for the DS1307 RTC that is maintained by Paul Stoffregen. I am looking at the readme.txt file, and it apparently can alarm given all kinds of different situations. Except one, it seems. I need to alarm on the hour, daily, i.e., at midnight, 1AM, 2AM, etc. I haven't tried it, but I need something like this: Alarm.alarmRepeat(0-23, 0, 0, getPrecip); The reason for this is I'm in the process of building a rain gauge and I found a node-RED chart node, that can chart hourly rain amounts. It would be great if the TimeAlarms library can do this but maybe I'm stuck with just creating a function using the Time library. Ideas? Thanks!

Maybe you cannot set an hourly alarm directly with a library. But you can set the alarm. You can connect a buzzer to a digital pin and make the pin high exactly at particular hours, minutes and seconds.

I'm not familiar with the library in question. Since it's RTC, I'm assuming you can get the time, do the Math to find the next top-of-the-hour set an alarm for that. When that alarm goes off (1) kill the first one and create your re-occurring hourly alarm.

VBR,
Inq