Circuit Documentation

Summary

This circuit involves an Arduino 101 microcontroller interfacing with an RTC DS3231 real-time clock module, a 16x2 I2C LCD display, and a buzzer. The Arduino 101 serves as the central controller, managing timekeeping, display, and sound functionalities.

Component List

RTC DS3231

• Description: Real-time clock module
• Pins: 32K, SQW, SCL, SDA, VCC, GND
• Purpose: Provides accurate timekeeping

Arduino 101

• Description: Microcontroller board
• Pins: A5/SCL, A4/SDA, AREF, GND, D13/SCK, D12/MISO, D11 PWM/MOSI, D10 PWM/SS, D9 PWM, D8, D7, D6 PWM, D5 PWM, D4, D3 PWM, D2, D1/TX, D0/RX, AIN, ioref, RESET, 3V3, 5V, VIN, A0, A1, A2, A3, ICSP MISO, ICSP SCK, ICSP MOSI
• Purpose: Central controller for the circuit

16x2 I2C LCD

• Description: 16x2 character LCD display with I2C interface
• Pins: GND, VCC, SDA, SCL
• Purpose: Displays information

Buzzer

• Description: Sound-producing device
• Pins: PIN, GND
• Purpose: Produces sound alerts

Wiring Details

RTC DS3231

• SCL connected to Arduino 101 A5/SCL
• SDA connected to Arduino 101 A4/SDA
• VCC connected to Arduino 101 3V3
• GND connected to Arduino 101 GND

Arduino 101

• A5/SCL connected to RTC DS3231 SCL and 16x2 I2C LCD SCL
• A4/SDA connected to RTC DS3231 SDA and 16x2 I2C LCD SDA
• 3V3 connected to RTC DS3231 VCC
• 5V connected to 16x2 I2C LCD VCC
• GND connected to RTC DS3231 GND, 16x2 I2C LCD GND, and Buzzer GND
• D8 connected to Buzzer PIN

16x2 I2C LCD

• SCL connected to Arduino 101 A5/SCL
• SDA connected to Arduino 101 A4/SDA
• VCC connected to Arduino 101 5V
• GND connected to Arduino 101 GND

Buzzer

• PIN connected to Arduino 101 D8
• GND connected to Arduino 101 GND

Code

No code provided for this circuit.