DO NOT connect in any ways the main power supply that drive the LOAD to the arduino and transistor circuitry! Turn OFF the relay with delay You can use this code example to introduce a delay in your ...

Prefer your Arduino connections wireless? Check out this smartphone-controlled periodic table of elements, or this wireless robotic hand.

In his garage, the Arduino and a set of relay systems connect to the circuits that control his sprinkler system valves. The Arduino is also connected to the Internet via Ethernet.

Plug another male-to-male connector into Pin 3 on the Arduino. This wire will connect to the positive port on the power relay connector (labeled with a “plus” symbol). Power your Arduino.

Indian Relay, an exciting and dangerous horse race, is a source of pride for members of the Native American Horse Nations tribes.

Indian Relay, an exciting and dangerous horse race, is a source of pride for members of the Native American Horse Nations tribes.

Over the last decade, the open-source movement has not only transformed the world of software, but also catalyzed a sweeping revolution in hardware tinkering. At the heart of this shift lies a ...

Relay for Life assists with funding cancer research and helping families and patients, through activities such as driving patients to treatments and distributing food.