/diy/ - Do It Yourself

Anonymous Thu Oct 12 20:08:09 2017 No.1259400 [View]
File: 737 KB, 4160x3120, IMG_20171012_210308.jpg [View same] [iqdb] [saucenao] [google]

>>1259391

Pic related is what I use to interface the arduino with the 12v siren and the photodiode. There are also some light switches I need to toggle in a certain order to untrigger the alarm.

I know I can charge the battery by connecting it straight to the PSU, and I can power the alarm system with the battery.

What I want to know is how to design a circuit that will alternately charge the battery and the circuit, like some commercial IC's do.

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/diy/ - Do It Yourself

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