Fritzing

16 volts, 10 watts AC (yep, AC, not DC) to 5 volts DC 

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I have a project, to replace my doorbell

i finished my project and it works perfectly but i have one problem how can i save my code in the sd card (memory) to not lose the data if the power gose off. (bittrey gose out or power cut e.x.) The code i use is:

 

 

https://github.com/Clement87/PushingBox-for-Arduino-Yun

 

 

can enyone help me tis this problem please.