About this item

⏰ Mini DS3231 – Real-Time Clock (RTC) Module with Battery

The Mini DS3231 module is a precise Real-Time Clock (RTC) that keeps track of time, date, and calendar, even when the main power is off, thanks to its built-in backup battery.
Perfect for Arduino, ESP32, Raspberry Pi projects requiring accurate timekeeping.

🛡️ Features & Advantages

• ⏰ Accurate time and date maintenance
• 🔋 CR2032 battery included for backup
• 🔌 I2C communication (SDA, SCL)
• ⚡ 3.3V and 5V compatible
• 🧰 Compact and easy-to-integrate module
• 🕒 Temperature-compensated accurate timekeeping

📦 Technical Description

• 🧩 IC: DS3231
• 📡 Interface: I2C (SDA, SCL)
• ⚡ Supply voltage: 3.3 – 5 V DC
• 🔋 Backup battery: CR2032 (included)
• 📏 Accuracy: ±2 ppm (~1 min/year)
• 🌡️ Operating temperature: -40 °C to +85 °C
• 📏 Dimensions: approx. 20 × 20 mm

🛠️ Applications

• 🏠 Arduino / ESP32 / Raspberry Pi time-keeping projects
• 🧮 Digital clocks and calendars
• 🔌 Data logging systems
• 🧪 Educational and scientific projects
• 🤖 Robotics with scheduled operations

⚠️ Usage Notes

• ❗ Ensure correct battery insertion
• 🔧 Do not mix main power and backup battery improperly
• 🛡️ Avoid short circuits on I2C pins

✨ Key Features

• ⏰ Accurate RTC with backup battery
• 🔌 Easy-to-use I2C interface
• ⚡ 3.3V / 5V compatible
• 📏 Compact module
• 📦 Ideal for time-tracking projects