Safe Way of Detecting EMP by MCU

[Mechatrommer]

well... a constructive and informative discussion! i would like to see more circuit if any, anybody else? i'll try it all, if i have the parts, if i have the time. i'll see which is more stable and suitable for this particular application. but so far, still my circuit no 2 is the easiest and most stable that i can manage. if safety is the issue, i might put some protection fuse or device or something upfront but yet, seeing variaty like the mariano circuit is like wah! we can actually do this! i think this is the spirit of EE. its ok, its fun! scrat's and hero's is next, zad's and mariano's need to be adjusted further, to get the stable result.