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DS1307 Real Time Clock (RTC) Module
Keep accurate time in every project with the DS1307 RTC Module from The Engineer Store, Bengaluru. This reliable, battery-backed real-time clock module maintains precise time and date even during power outages, making it essential for data logging, alarm systems, attendance trackers, and any application requiring persistent timekeeping. Communicates effortlessly with Arduino, Raspberry Pi, and other microcontrollers via the I2C interface. Fast shipping across India with full technical support and a 7-day warranty on manufacturing defects.
Specifications
| IC Chip | DS1307 (Maxim/Dallas Semiconductor) |
| Communication Interface | I2C (TWI) - SDA & SCL lines |
| Operating Voltage | 5V DC |
| Battery Backup | CR2032 coin cell (included or slot provided) |
| Timekeeping Accuracy | +/-2 ppm typical with 32.768 kHz crystal |
| Tracks | Seconds, Minutes, Hours, Day, Date, Month, Year (with leap-year compensation up to 2100) |
| Hour Format | 12-hour (AM/PM) or 24-hour selectable |
| On-board Memory | 56 bytes battery-backed NV SRAM |
| Square Wave Output | Programmable - 1 Hz, 4.096 kHz, 8.192 kHz, or 32.768 kHz |
| Module Dimensions | ~27 mm x 28 mm x 8.4 mm |
| Header Pins | VCC, GND, SDA, SCL, SQW (active-low square wave / interrupt output) |
| On-board Features | 32.768 kHz crystal, pull-up resistors for I2C, battery holder, power LED |
| Compatibility | Arduino (Uno, Mega, Nano, etc.), Raspberry Pi, ESP32, ESP8266, STM32, PIC, and other I2C-capable MCUs |
| Popular Libraries | RTClib (Adafruit), DS1307RTC, Wire.h |
| Operating Temperature | 0 degreesC to +70 degreesC |
| Type | Timekeeping / Clock Module |
| Origin | Original / Authentic DS1307 IC |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Why Choose the DS1307 RTC Module?
- Battery-backed timekeeping: Maintains accurate date and time even when main power is disconnected, thanks to the onboard CR2032 coin cell.
- Simple I2C interface: Only two data lines (SDA, SCL) needed - saves precious GPIO pins and simplifies wiring.
- Plug-and-play with Arduino: Extensive library support (RTClib, DS1307RTC) means you can read time in just a few lines of code.
- 56 bytes of NV SRAM: Store small amounts of user data (settings, calibration values) that persist through power cycles.
- Programmable square wave output: Use the SQW pin for precise timing interrupts or as a clock source for other circuits.
- Compact and breadboard-friendly: Standard 2.54 mm header pins fit directly into breadboards and prototyping setups.
- 100% authentic components: Genuine DS1307 IC sourced from trusted, authorized distributors.
- Fast 1-5 day shipping, 7-8 day delivery: Ships from our Bengaluru warehouse; same-day delivery available within Bengaluru.
- Expert technical support: Our engineering team helps you with wiring, code, and troubleshooting - included free.
Pin Configuration & Wiring Guide
| Module Pin | Arduino Uno Pin | Function |
| VCC | 5V | Power supply (5V DC) |
| GND | GND | Ground |
| SDA | A4 | I2C Data |
| SCL | A5 | I2C Clock |
| SQW | Any digital pin (optional) | Square wave / interrupt output |
Quick-Start Arduino Code
#include <Wire.h>
#include <RTClib.h>
RTC_DS1307 rtc;
void setup() {
Serial.begin(9600);
Wire.begin();
if (!rtc.begin()) {
Serial.println("Couldn't find RTC!");
while (1
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy DS1307 Real Time Clock Module Online in India
Purchase the DS1307 Real Time Clock Module online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on DS1307 Real Time Clock Module with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy DS1307 Real Time Clock Module at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.
DS1307 Real Time Clock (RTC) Module
Keep accurate time in every project with the DS1307 RTC Module from The Engineer Store, Bengaluru. This reliable, battery-backed real-time clock module maintains precise time and date even during power outages, making it essential for data logging, alarm systems, attendance trackers, and any application requiring persistent timekeeping. Communicates effortlessly with Arduino, Raspberry Pi, and other microcontrollers via the I2C interface. Fast shipping across India with full technical support and a 7-day warranty on manufacturing defects.
Specifications
| IC Chip | DS1307 (Maxim/Dallas Semiconductor) |
| Communication Interface | I2C (TWI) - SDA & SCL lines |
| Operating Voltage | 5V DC |
| Battery Backup | CR2032 coin cell (included or slot provided) |
| Timekeeping Accuracy | +/-2 ppm typical with 32.768 kHz crystal |
| Tracks | Seconds, Minutes, Hours, Day, Date, Month, Year (with leap-year compensation up to 2100) |
| Hour Format | 12-hour (AM/PM) or 24-hour selectable |
| On-board Memory | 56 bytes battery-backed NV SRAM |
| Square Wave Output | Programmable - 1 Hz, 4.096 kHz, 8.192 kHz, or 32.768 kHz |
| Module Dimensions | ~27 mm x 28 mm x 8.4 mm |
| Header Pins | VCC, GND, SDA, SCL, SQW (active-low square wave / interrupt output) |
| On-board Features | 32.768 kHz crystal, pull-up resistors for I2C, battery holder, power LED |
| Compatibility | Arduino (Uno, Mega, Nano, etc.), Raspberry Pi, ESP32, ESP8266, STM32, PIC, and other I2C-capable MCUs |
| Popular Libraries | RTClib (Adafruit), DS1307RTC, Wire.h |
| Operating Temperature | 0 degreesC to +70 degreesC |
| Type | Timekeeping / Clock Module |
| Origin | Original / Authentic DS1307 IC |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Why Choose the DS1307 RTC Module?
- Battery-backed timekeeping: Maintains accurate date and time even when main power is disconnected, thanks to the onboard CR2032 coin cell.
- Simple I2C interface: Only two data lines (SDA, SCL) needed - saves precious GPIO pins and simplifies wiring.
- Plug-and-play with Arduino: Extensive library support (RTClib, DS1307RTC) means you can read time in just a few lines of code.
- 56 bytes of NV SRAM: Store small amounts of user data (settings, calibration values) that persist through power cycles.
- Programmable square wave output: Use the SQW pin for precise timing interrupts or as a clock source for other circuits.
- Compact and breadboard-friendly: Standard 2.54 mm header pins fit directly into breadboards and prototyping setups.
- 100% authentic components: Genuine DS1307 IC sourced from trusted, authorized distributors.
- Fast 1-5 day shipping, 7-8 day delivery: Ships from our Bengaluru warehouse; same-day delivery available within Bengaluru.
- Expert technical support: Our engineering team helps you with wiring, code, and troubleshooting - included free.
Pin Configuration & Wiring Guide
| Module Pin | Arduino Uno Pin | Function |
| VCC | 5V | Power supply (5V DC) |
| GND | GND | Ground |
| SDA | A4 | I2C Data |
| SCL | A5 | I2C Clock |
| SQW | Any digital pin (optional) | Square wave / interrupt output |
Quick-Start Arduino Code
#include <Wire.h>
#include <RTClib.h>
RTC_DS1307 rtc;
void setup() {
Serial.begin(9600);
Wire.begin();
if (!rtc.begin()) {
Serial.println("Couldn't find RTC!");
while (1
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy DS1307 Real Time Clock Module Online in India
Purchase the DS1307 Real Time Clock Module online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on DS1307 Real Time Clock Module with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy DS1307 Real Time Clock Module at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.