How to make a TRIP-WIRE ALARM

How to make a TRIP-WIRE ALARM

I made a sump pump alarm using a cloths pin, you have one thumbtack with the flat surface on the inside and the other the point. you place an aspirin between the flat surface and the point. You then attach it to a piece of wood and lower it into you sump pump well above […]

I made a sump pump alarm using a cloths pin, you have one thumbtack with the flat surface on the inside and the other the point. you place an aspirin between the flat surface and the point.

You then attach it to a piece of wood and lower it into you sump pump well above the water line.

If the sump pump fails the water rises, dissolves the aspirin, the contacts touch and set off an alarm. Its saved me from a flooded basement more than once.

In the army back in the day, we use to have tripwire mines that set of a magnesium flaremine that turned night in to day.

They were supposed to be put up around defensive positions, but we had great fun rigging them around the latrine pit just outside camp.The idea isn’t simply setting off the flammable material at the ends of the leads.

You can connect something else to the leads to send an electrical signal to trigger another device once the trap goes off.

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