If your looking to have an indicator for your water projects this is a neat circuit.. enjoy..

https://www.youtube.com/watch?v=38C87blaicM&feature=c4-overview&list=UU095jfI446MK9VoLnAJKwRw

Very nice project, I like the circuit. What voltage is powering it?:cool::D:P

Quote from Jeff Nading on December 28th, 2013, 09:10 PM

Very nice project, I like the circuit. What voltage is powering it?:cool::D:P

Thanks,  its powered from a 9 volt battery that goes to a buck converter.
dont realy need the converter just handy when it comes to bench test.

could also use a 12v-dc power source.