In normally closed reed switch, switch is closed in the absence of magnetic field and it is open in the presence of magnetic field. The complete code for this Arduino reed switch project is given at ...

The complete circuit diagram for the Arduino Whistle Detector Switch circuit using Sound Sensor is show below. The circuit was drawn using Fritzing software. The Sound sensor and the Relay module is ...

The circuit diagram of the GSM security switch is shown in Fig. 2. It is built around Arduino Nano board (Board1), SIM800L GSM modem (Board2), 5V, 2A power supply and a few other components. Arduino ...

The LED should turn on when either the first button or the second button is pressed. Only use your Arduino for power and ground. Create a video (or a screencast) of your circuit in action. If you have ...

Now as we know how to integrate the touch sensor with Arduino. Now you can make your own at home and enjoy the dimming of your bulb by using this touch-sensitive sensor. The working of the dimmer ...

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 ...

1: Circuit diagram of automatic battery charger When AC mains ... To know the status of the battery when 230V AC mains power is off, press and hold test switch S1 for some time. Arduino gets power ...