I first heard about and took a look at Relay, a screenless phone for kids back in 2018. The small walkie-talkie device is incredibly simple and easy to use and made it easy to communicate with my own ...

This circuit allows an SPST momentary pushbutton to act as a push-on push-off switch, using a DPDT latching (bi-stable) relay. It was originally intended to allow a single pushbutton switch on the ...

Push-button start may be common today, but it wasn't always the dominant way to crank an engine. Push-button start systems and ignition key systems activate the same process in different ways. Do you ...