This is a simple clap switch circuit with high sensitivity. The only unusual component is the single coil latching relay. While there are numerous means of generating the latching function, the ...

Few realize how close an optical coupler resembles a relay. It is so close, in fact, that one can be wired as a Run-Stop latch circuit. One advantage over the relay is that it may be turned off via a ...

Adafruit has today announced a new addition to their range of FeatherWing add-on boards with the availability of two FeatherWing relays that offer both latching and non-latching and are now available ...