Magnetic Door Window Contact Reed Switch Arduino

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Magnetic door window contact reed switch arduino.

7939wg wh ademco surface mount contacts white 4 4 out of 5 stars 183. Vo is 5v when the switch is open and 0v when the switch is closed. 13 and gnd should be next to each other. The switch that we are going to use has two parts.

This shows you how to connect and window door security sensor to an arduino. Magnetic door sensor reed switch. 3 sets mc 38 mount wired door window sensor magnetic reed switch recessed alarm security. Connect the positive pin the longer lead of the led to pin 13 of the arduino.

We are using a normally open reed switch in this project. 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. The following image shows a simple reed switch with its internal connections. Connect the negative pin the shorter pin of the led to pin gnd ground of the arduino.

When the magnet is less than. Reed switches can also be useful for other applications. 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. It also show how to add a third state wire cut using two resistors.

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. Switch is closed in the presence of magnetic field and it is open in the absence of magnetic field. Depending on the construction of the reed switch the contacts inside the switch can be either normally open or normally closed. 5sets magnetic reed switch magnetic door switch magnetic contact switch normally open closed nc no door alarm window security for dc 5v 12v 24v light 4 6 out of 5 stars 16 16 59 16.

Normally the reed is open no connection between the two wires. To interface reed switch with arduino we need to build a voltage divider circuit as shown in the figure below. Based on the presence or absence of a magnetic field the reed switch contacts will be either close or open. How to use a magnetic door switch sensor with arduino.

The switch itself that usually comes opened and the magnet. A magnet and reed switch mounted on a bicycle can help calculate the speed of the bicycle based on the rpm of the wheels.