Soil Moisture Sensor and Arduino

Want to know and data log the moisture level of soil, here is the sensor to…

Power saver circuit using PIR sensor

       Many times we forgot to turn off some home appliances when it not…

Simple continuity tester circuit diagram

This simple continuity tester circuit constructed with single npn switching transistor SL100, this circuit will give…

Simple metal detector circuit

Very simple metal detector circuit is given here, it uses Inductive proximity sensor. It has the…

Simple Rain detector alarm circuit

Single transistor Rain detector alarm or water drop detector alarm, We can use this circuit any…