Magnetic Door Window Contact Reed Switch Arduino

Reed switches can also be useful for other applications.

Magnetic door window contact reed switch arduino.

Vo is 5v when the switch is open and 0v when the switch is closed. We are using a normally open reed switch in this project. 3 sets mc 38 mount wired door window sensor magnetic reed switch recessed alarm security. 13 and gnd should be next to each other.

In this tutorial we will use one magnetic contact door sw sensor and a buzzer for making a noise when a door is opened. A magnetic contact switch is basically a reed switch encased in a plastic shell so that you can easily apply them in a door a window or a drawer to detect if the door is open or closed. Today we will make a simple device that will light up a led when a window is opened and if it is opened for 15 minutes it turns on a buzzer to remind you to close it. Connect the negative pin the shorter pin of the led to pin gnd ground of the arduino.

Normally the reed is open no connection between the two wires. The other half is a magnet. The switch that we are going to use has two parts. Since the switch is non polar you can plug in the wires any way.

To interface reed switch with arduino we need to build a voltage divider circuit as shown in the figure below. Depending on the construction of the reed switch the contacts inside the switch can be either normally open or normally closed. The switch itself that usually comes opened and the magnet. How to use a magnetic door switch sensor with arduino.

7939wg wh ademco surface mount contacts white 4 4 out of 5 stars 183. It also show how to add a third state wire cut using two resistors. Connect the positive pin the longer lead of the led to pin 13 of the arduino. This shows you how to connect and window door security sensor to an arduino.

Only 3 left in stock order soon. Magnetic door sensor reed switch. Switch is closed in the presence of magnetic field and it is open in the absence of magnetic field. Based on the presence or absence of a magnetic field the reed switch contacts will be either close or open.

A magnet and reed switch mounted on a bicycle can help calculate the speed of the bicycle based on the rpm of the wheels. Gufastore 10pcs surface mount alarm 10w 100v 0 5a in max magnetic contact ideal for door window security 4 5 out of 5 stars 105.