mine peon raspberry pi crashing

[kieyard]

Iv recently brought my first mining rig consisting of a raspberry pi and a antminer S1.
I have installed mine peon following a YouTube video and confirmed it was the right way by checking multiple versions. (So I am confident I have done this right)
I have a class 10 8GB sandisk SD card and am powering it via a phone charger.
The problem I am having is that the whole thing keeps crashing after 7 hours give and take a few minuets.
Any ideas, anyone? As I need it to run 24/7 without me messing with it.

I have a USB fan cooling it and is doing a great job as it doesn't get hot at all even after 7 hours have gone by.