When you’re prototyping a new project, sometimes all you need is a switch. The folks at oomlout were tired of constantly having to rewire things, so they built a universal switch box for the … ...

To solve the problem without sourcing a new switch, [Jean-Noel] built his own Arduino based Dahlander switch. This consists of three relays that select the wiring configuration for each speed mode.

In this code, a simple trick is used to desist the clap switch from responding to an unwanted sound, say a loud music bit. So, the built in LED (D13 LED) will toggle (off-on-off-on…) only when the ...

When reed switch is opened, pin 2 of Arduino goes high with the help of the pull-up resistor R2, and the alert signal is available through the piezo-speaker PZ1 (not an active piezo-buzzer). At the ...

Electronics enthusiasts or tattoo artists may be interested in a new touchless switch which has been created and implemented into a tattooing machine ...