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Item #:
61862245
2PCS DS3231 AT24C32 IIC RTC Clock Module High Precision Real Time Clock Module Sensor for Arduino DIY
Item #:
61862245
PHP 1006
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The DS3231 is an RTC IC developed by Maxim Integrated. It is a low cost, extremely accurate RTC IC with communication over I2C Interface.
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What Stands Out
High Precision
Offers exceptional timekeeping accuracy with an error margin of just seconds per year, making it ideal for projects requiring reliable time synchronization.
IIC Communication
Features IIC interface for easy integration with Arduino and other microcontrollers, simplifying project setups and enhancing communication efficiency.
Dual Functionality
Combines RTC capabilities with additional memory via AT24C32, providing not just time tracking but also a space for storing essential data, expanding project versatility.
Product Details
| Memory Storage Capacity | 32 KB |
| Connectivity Technology | I2C |
| Operating System | Linux |
| Processor Brand | Maxim Integrated |
| Compatible Devices | Arduino Uno R3, Compatible single-board computers and microcontroller boards with I2C interfaces |
| Processor Count | 1 |
| Item Dimensions L x W x H | 1.5"L x 0.87"W x 0.55"H (3.8 x 2.2 x 1.4 cm) |
| Brand | Geekstory |
| Model Number | DS3231 AT24C32 |
| Mfr Part Number | FZ1201-2 |
| Manufacturer | Geekstory |
| CPU Manufacturer | Maxim Integrated |
Who Should Buy?
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Arduino Enthusiasts
Ideal for hobbyists looking to integrate accurate timekeeping into their Arduino projects or experiments.
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DIY Electronics
Perfect for tech-savvy individuals creating custom electronics that require real-time clock functionalities.
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Automation Projects
Great for automation projects needing precise time tracking for scheduled operations or events.
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General Consumers
Not suitable for everyday users who require a standalone clock without advanced features or programming.
Product Description
2PCS DS3231 AT24C32 IIC RTC Clock Module High Precision Real Time Clock Module Sensor for Arduino DIY
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is the DS3231 RTC clock module used for?
Answer: The DS3231 RTC clock module is primarily used to keep accurate time in electronic projects and systems. This module provides real-time clock functionality with high precision, making it ideal for applications such as data logging, timers, and scheduling events in Arduino-based projects. Its I2C interface allows easy communication with microcontrollers, which enhances flexibility in integrating with various devices. For example, hobbyists use it in weather stations or home automation systems where maintaining accurate time is critical. -
Question:
How do I connect the DS3231 module to my Arduino?
Answer: Connecting the DS3231 module to an Arduino is straightforward. You will typically use four wires: connect VCC to the Arduino's 5V, GND to ground, SDA to the Arduino's SDA pin (A4 on most boards), and SCL to the SCL pin (A5 on most boards). After connecting, you'll need to implement the appropriate libraries, such as 'RTClib,' to handle functions like reading and setting the time. This setup is commonly used in projects requiring real-time data for logging or display. -
Question:
What is the temperature compensation feature of the DS3231?
Answer: The temperature compensation feature of the DS3231 clock module adjusts the oscillator frequency based on temperature variations. This means it can maintain accuracy despite temperature changes, providing more reliable timekeeping than standard RTCs that may drift over time. Ideal scenarios include sensitive applications, such as scientific equipment and precision data logging, where consistent time measurements are essential regardless of environmental conditions. -
Question:
Can the DS3231 module work with Raspberry Pi?
Answer: Yes, the DS3231 RTC clock module can be used with Raspberry Pi. Users can connect it via the I2C interface, similar to how it's done with Arduino. This allows Raspberry Pi projects to maintain accurate system time, especially useful when the Pi is powered off or without internet access. For example, hobbyists often integrate the DS3231 with Raspberry Pi for projects like time-lapse photography setups that require precise timing, as well as home automation where logs of events are crucial. -
Question:
What are the advantages of using the DS3231 over other RTC modules?
Answer: The DS3231 offers notable advantages like superior accuracy and built-in temperature compensation compared to standard RTC modules like the DS1307. It typically maintains an accuracy of within ±2 minutes per year, which is exceptional for many projects. Developers prefer it for applications that cannot tolerate drift, such as in alarms or loggers where timing is critical. Additionally, its low power consumption makes it suitable for battery-powered devices and IoT projects. -
Question:
What programming libraries are compatible with the DS3231?
Answer: Compatible programming libraries for the DS3231 module include 'RTClib' and 'DS3231' libraries for Arduino IDE. These libraries simplify tasks such as reading or setting the current time and managing alarms. With these libraries, users can easily implement features like timestamps in data logs or scheduled events in their projects. Familiarity with such libraries enhances productivity and expands functionality in DIY electronics. -
Question:
How can I set the time on the DS3231 module?
Answer: Setting the time on the DS3231 module can be done using an Arduino sketch. By utilizing the 'RTClib' library, you can create a simple program that sets the current date and time on the module using the 'rtc.adjust()' function. This is particularly useful in projects where accurate timing is crucial, such as when reporting sensor data for specific time intervals. After setting the time, the module will keep time accurately, even when not powered, making it extremely valuable for autonomous systems. -
Question:
Is it necessary to use external power with the DS3231?
Answer: While the DS3231 module can operate on power from a microcontroller, it features a backup battery slot, allowing it to keep track of time even when external power is removed. This is critical for applications like data loggers that need to preserve timestamps across power cycles. Thus, incorporating a small battery ensures continuity in timekeeping, making the module highly reliable for any project requiring persistent time data. -
Question:
What should I consider when choosing an RTC module for my project?
Answer: When selecting an RTC module like the DS3231, consider accuracy, power consumption, and features such as temperature compensation. High-accuracy modules are necessary for projects where time precision is critical. Additionally, evaluate the connectivity options like I2C for compatibility with your microcontroller. Opting for modules with built-in backup battery options, such as the DS3231, ensures reliability during power outages, proving useful in home automation and weather monitoring systems. -
Question:
Where can I buy 2PCS DS3231 AT24C32 IIC RTC Clock Module High Precision Real Time Clock Module Sensor for Arduino DIY?
Answer: You can purchase the 2PCS DS3231 AT24C32 IIC RTC Clock Module from Ubuy. They offer a wide selection of electronics and components suitable for your projects. Ubuy is renowned for its reliable service and has a user-friendly platform that makes shopping for DIY electronic parts convenient and efficient, allowing you to find everything you need for your Arduino projects in one place.
Geekstory Single Board Computers DS3231 AT24C32 Editorial Review
The product, a DS3231 RTC module, has garnered a mix of practical insights and encouragement among users who appreciate its functionality. With a user-friendly design, customers generally find it easy to work with, indicating that it holds potential for various projects. However, a notable point of contention emerged regarding the orientation of the pins; some users wish they were either designed differently or disconnected for flexibility. Though the product lacks dedicated documentation, savvy users can rely on IC datasheets to understand connections, which reflects the hands-on nature of this device and its appeal to those who are comfortable with DIY electronics. There are some concerns about the battery choices and associated risks, particularly regarding the use of the CR2032 battery without appropriate precautions. Users have shared detailed guidance on this topic, indicating a bit of a learning curve associated with safe operation, but this complexity does not detract from the overall positive reception. Given the solid Construction and adherence to typical design expectations, many users express an intent to repurchase once their current project is complete, underlining the module's practicality and effectiveness in a variety of applications. Pros and Cons: **
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Pros
- User-friendly design and ease of use.
- Practical for various DIY projects and applications.
- Positive feedback regarding its performance and reliability.
- Encouragement from users to seek solution-oriented information online.
Cons
- Lack of dedicated documentation for beginners.
Platform Trust & Buyer Confidence
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Mohd
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“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
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“Accurate delivery timing given”
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“Not madly expensive like I thought, and much quicker than promised.”
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6/7/2026 · via Trustpilot
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“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
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Features & Benefits
- Low-cost, high-precision I2C real-time clock (RTC)
- Integrated temperature-compensated crystal oscillator (TCXO) and crystal
- Includes a battery input terminal for maintaining timing when main power is disconnected
- Can be cascaded with other IIC devices
- High accuracy with an error of about 1 minute per year
- Small size and lightweight design
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