DS1307 Clock Module I2C Real Time Clock for Arduino by Generic

Description

Product Overview

The DS1307 Clock Module is a compact, low‑power real‑time clock (RTC) solution designed for Arduino and compatible microcontroller platforms. At its core lies the industry‑standard DS1307 chip, which communicates via a simple I2C interface, allowing developers to read and set date and time with just two wires. The module incorporates a high‑precision 32 kHz crystal that provides stable timing, while an on‑board lithium‑coin cell holder offers uninterrupted operation for up to several years when the main supply is removed. Physical dimensions measure approximately 2.0 cm × 1.5 cm, making it easy to fit onto breadboards or custom PCBs. Voltage tolerance ranges from 3.3 V to 5 V, and the module includes pull‑up resistors for reliable I2C signaling. Compatibility is reinforced by a well‑documented Arduino library that abstracts low‑level register access, enabling rapid prototyping and seamless integration into existing codebases. The design emphasizes durability, with a robust PCB layout that resists vibration and thermal stress, ensuring consistent performance in both hobbyist and industrial environments.

Usage

In practical applications, the DS1307 Clock Module shines wherever accurate time stamps are essential. Data‑logging stations benefit from its ability to maintain precise timestamps across power cycles, making it ideal for environmental sensors that record temperature, humidity, or air quality over extended periods. Home automation projects can use the module to schedule lighting, heating, or irrigation events with minute‑level accuracy, while wearable prototypes rely on its low power draw to extend battery life. The module also serves well in educational settings, providing students with a tangible example of time‑keeping hardware and I2C communication. Because the module operates over a standard I2C bus, it can be shared with other peripherals such as EEPROMs, OLED displays, or sensor arrays, enabling complex systems that require synchronized timing without additional microcontroller pins. Its straightforward wiring—VCC, GND, SDA, and SCL—means that even beginners can integrate it into a project within minutes.

Why Choose Us

Choosing the DS1307 Clock Module from Generic means selecting a product that has undergone rigorous quality control and functional testing. Each unit is inspected for crystal accuracy, battery backup integrity, and I2C signal reliability before shipment, guaranteeing that you receive a component that meets or exceeds industry specifications. Our manufacturing process follows ISO‑9001 standards, and we source components from reputable suppliers to ensure long‑term availability and consistency. In addition to the hardware, we provide comprehensive documentation, including wiring diagrams, example sketches, and a fully supported Arduino library that receives regular updates. Customer support is available through email and a dedicated forum where engineers and hobbyists can share tips, troubleshoot issues, and request firmware enhancements. We also back the module with a 12‑month warranty, reflecting our confidence in its durability and performance. By partnering with us, you gain not only a reliable RTC component but also a responsive technical team committed to your project’s success.

Key Features

• Accurate timekeeping with a 32 kHz crystal for stable clock signals
• Battery backup ensures continuous operation during power outages
• Simple I2C interface requires only two data lines for easy integration
• Wide voltage range (3.3 V‑5 V) makes it compatible with most Arduino boards
• Responsive customer support and a 12‑month warranty for peace of mind

FAQ

Can the DS1307 module operate at 3.3 V?

Yes, the module is designed to work reliably between 3.3 V and 5 V, allowing it to be used with both 3.3 V and 5 V Arduino variants.

How long does the battery backup last?

When using a standard 3 V lithium coin cell, the backup can maintain accurate time for up to 5‑10 years, depending on the load and environmental conditions.

Do I need to install any drivers to use the module?

No additional drivers are required. The module communicates over I2C, and the provided Arduino library handles all low‑level interactions.

Is the module suitable for outdoor projects?

Yes, the PCB is coated with a protective solder mask that resists moisture and temperature variations, making it suitable for many outdoor applications when properly enclosed.

Can I connect multiple DS1307 modules on the same I2C bus?

While the DS1307 address is fixed, you can use an I2C multiplexer or separate bus lines to manage multiple modules if your design requires redundant time sources.