Hacked Gadgets Forum

October 11, 2015

Water Shut Off Valve Project

at 4:31 pm. Filed under Cool Gadgets, Electronic Hacks


This project allows you to automate the filling of water containers. In this case the need was to stop filling a horse water tank and automatically stop when it has been filled. A few stainless steel clamps are used to sense the water by conduction. The circuit is running off a 9 volt battery, it is powerful enough to activate the 12 volt relay and a voltage divider is used to make the 5 volts that the microcontroller needs.

“This is a very simple project that only uses a few electrical components and some PVC pipe. This is the first project that I have built using an ATTiny 85. It is a very powerful little chip and I will probably have many more projects that use it. An Arduino can be used in place of the ATTiny85 and the same code should work.”



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2 Responses to “Water Shut Off Valve Project”

  1. stuart Says:

    I like low-tech solutions as there is less to go wrong … so … wouldn’t a toilet inlet valve be a better solution here?

  2. MrMaigo Says:

    float valve?

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