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Sealed Membrane 4*4 button pad with sticker
$1.50 $6.90
SKU: FIT0129
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Gravity: Digital Infrared Motion Sensor For Arduino$4.40Details
Introduction
The 4x4 Keypad is a general purpose 16 button (4x4) matrix keypad. It comes ready to work, simply peel-off the adhesive backing, stick it to your surface and plug it in.
Project 1.How to Make an Mail Alarm
This time using a PIR sensor and an ESP32 to send an email every time that movement is detected.
Hardware components: