Here are some DIY LDR switch circuits available on our website and the web. LDR switches are used to switch a relay or other device when light are present or absent. LDRs or Light Dependent Resistors ...

General purpose circuit of the simple pressure sensor alarm is built around a couple of readily available cheap components. Working of this circuit is straight forward and self-explanatory. When the ...

WARANGAL: Known for his low-cost innovations meant to address issues of people across villages, Mupparapu Raju, a well-known inventor in the Warangal district, has now come back with Light Dependent ...