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Arduino Compatible Real Time Clock Module
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This compact real-time clock (RTC) module keeps accurate time using a DS1307 RTC chip and a replaceable battery. With an onboard 24C32 32K EEPROM for data st...
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This compact real-time clock (RTC) module keeps accurate time using a DS1307 RTC chip and a replaceable battery. With an onboard 24C32 32K EEPROM for data storage, it's a versatile addition to Arduino projects requiring date, time, and non-volatile memory — such as clocks, data loggers, and timers.
Key Features
- DS1307 RTC Chip – Accurate timekeeping with battery backup
- 24C32 EEPROM – 32K non-volatile memory for data storage
- I²C Interface – Simple two-wire connection to Arduino
- Battery Backed – Keeps time when main power is off (approx. 1 year)
- Replaceable Battery – Uses standard CR2032 button cell (3.6V battery supplied)
- Read/Write Functionality – Set and read date/time programmatically
Specifications
- RTC IC: DS1307
- EEPROM: 24C32 (32K)
- Interface: I²C
- Supply Voltage: 5V
- Battery Life: Approx. 1 year (fully charged)
- Dimensions: 28×28×7mm
Ideal For
- Arduino clocks and alarm projects
- Data loggers with timestamped records
- Scheduled automation and timer systems
- Any project needing persistent date/time tracking
Package Contents
- 1× DS1307 RTC module with 24C32 EEPROM
- 1× 3.6V battery (installed)
Jargon buster
Plain-language definitions for the technical terms used above.
- EEPROM
- A type of non-volatile memory that keeps stored data even when power is turned off. In a sensor module, it can be used to store settings or calibration data so they do not need to be re-entered every time.
- RTC
- A Real-Time Clock keeps track of time even when the main processor is asleep or powered down, usually with a small backup battery. It matters for data logging and tracking projects that need accurate timestamps.
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