LDR switches are used to switch a relay or other device when light are present or absent. LDRs or Light Dependent Resistors are very useful especially in light/dark sensor circuits. Normally the ...

This Toggle Switch uses the popular Johnson Decade counter IC CD4017. By giving positive pulses to its clock input, ... Toggle Switch Circuit diagram. CD4017 Pin connection. 4017 IC datasheet. Tags ...

Experimenting with batteries, bulbs, buzzers, switches and other electrical components is a great way to learn about circuits and start to think about how to incorporate sounds into your Build a ...