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Hello and welcome to our instructable about using ESP8266 NodeMCU Based IoT Alarm Clock With Blynk.
This project is made by two students named Valentino Kevin and Ryan Jonathan from BINUS taking a degree in Computer Engineering, and in this project we are making an IoT device involving a microcontroller, specifically the ESP8266 NodeMCU because it is a very small device and also a popular choice for IoT projects.
Without further ado, below is the list of components used for this project.
Supplies:List of needed components:
1. ESP8266 NodeMCU
2. LCD I2C Screen 16x2
3. Mini or Long Breadboards
4. A Speaker
5. RTC DS3231
6. Ultrasonic Sensor HC-SR04
7. Jumper wires
8. 5V Adapter
9. Female DC jack
10. NPN Transistor BC547
11. 220 Resistor

Tools and software needed:
1. Solder lead
2. Soldering iron
3. Blynk App on Android, IOS or on an emulator
4. Arduino IDE

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