Simple Thief Alarm with NodeMCU 8266 & Ultrasonic Sensor

Build a DIY thief alarm with NodeMCU 8266 and an ultrasonic sensor. Secure your space easily with our step-by-step tutorial.
Code-drive.google.c...
Connection-
TRIGER PIN-D2
ECHO PIN- D3
GND-GND
VCC-5v (external)
Buzzer PIN- D1
Buzzer Gnd-GND
#diy #iot #alarm #homesecurity #nodemcu

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