Here is the circuit of an Arduino-based Panic Alarm ... and the Push-ON (push ‘n’ hold) switch (S1) to activate the alarm function. An additional Electro-Magnetic Relay (EMR) is also attached to the ...

[Ed] was tasked with adding push-button degaussing ... to use an SSR to switch the coil, and after making lots of transistor-based designs on paper, grabbed a nearby Arduino.

[Lars] shows you how to get a perfect score on the first four levels of BIT.TRIP RUNNER by using an Arduino to time and send button presses. This is a pretty simple game that uses a couple of ...

Thereafter, you should push the reset switch once to make the system fully functional ... That’s all! /* * SIM800L SMS RELAY v1.0 * Arduino Hardware (Author): Nano V3 (ATmega328) * Arduino IDE (Author ...

The alarm only stops when you press the push button connected to the Arduino. For this setup ... the hardware for this setup is pretty minimal: a relay for the bulb, a resistor for the LDR ...

you can replace them with bigger LEDs or even a light bulb (paired with a relay for the Arduino Uno). Try a toggle switch instead, so you won't have to keep your hands on the push button.