Associated with providing an emergency stop capability, a noticeable red button is often included on mechanical and electronic devices to allow for a rapid way to halt a machine that is seemingly ...

As with the age-old panic after realizing you have left an oven on, a cand le lit, and so on, a soldering tool left on is a potentially serious hazard. Hackaday.io user [Nick Sayer] had gotten used to ...

This is an improved version of Anthony Smith’s designs for a latch on/latch off switch (see the whole series below). The new design switches a 120VAC load, and includes several much-needed details on ...