Sealed Membrane 4*4 button pad with sticker
$3.99
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IntroductionThe 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 AlarmThis time using a PIR sensor and an ESP32 to send an email every time that movement is detected.Hardware components:FireBeetle ESP32 IOT Microcontroller *1Digital Infrared Motion Sensor For Arduino *1Sealed Membrane 4*4 button pad with sticker *15mm LED Pack (50 pcs) *1220R Resistor *1Perfboard
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