In order to reduce power consumption, I want to resume my Arduino from standby mode every 10 seconds. For this a hardware interrupt is necessary.
Is there such a device that can create a quick impulse to trigger that interrupt? It can be anything from 10ms to 2 seconds; doesn't matter. My first thought was to use a 555 timer, but this one can only be on for 10 seconds and off for the same amount of time.
The best solution for me would be an already assembled device that I just have to wire with my Arduino since my knowledge in electronics is very low. Or a detailed assembly plan, then I would be able to build it myself I guess?
UPDATE: I was now able to put the Arduino into standby-mode using the Low-Power library. At first it seemed like it didn't work, because I wanted to print out a text over the serial connection. Instead, I tried to let the internal LED blink every 8 seconds, and this works perfectly.