Adapter Module LilyPad RTC for CR2032 Battery — Real-Time Clock Module

The LilyPad RTC adapter module for a CR2032 battery provides a compact, battery-backed real-time clock solution for wearable and textile electronics built to the LilyPad form factor. The module holds a single CR2032 coin cell to maintain time when the main power is disconnected, enabling accurate timekeeping for small projects. Designed for simple integration, it connects to standard LilyPad-compatible boards and components to add clock, timer, alarm, or scheduling capabilities with minimal footprint.

Advantages

This adapter module offers persistent timekeeping through a CR2032 cell, preserving clock settings during power loss and supporting long-term battery operation in a lightweight package. Its LilyPad-compatible layout simplifies attachment to textile circuits and sewable electronics using standard pads and spacing. The compact dimensions and low power requirement make it suitable for projects where space and energy are limited, while straightforward electrical connections reduce integration time.

Suitable for

• Wearable electronics requiring timekeeping functions
• Textile and sewable projects that need timers or alarms
• Data logging setups that record timestamps
• Portable or battery-powered prototypes with scheduling needs

Key specifications

• Battery type: CR2032 coin cell (user-supplied)
• Form factor: LilyPad-compatible layout for sewable electronics
• Function: Real-time clock with battery backup
• Mounting: Sewable pads and standard LilyPad connection spacing
• Operating condition: Designed for low-power clock retention

How to use

Install a CR2032 battery into the holder, ensuring correct polarity. Sew or connect the module to your LilyPad-compatible circuit using the provided pads, aligning connections for power, ground and clock signal lines according to your clock chip wiring or microcontroller interface. After connection, set the time using your microcontroller or software interface compatible with the RTC chip on the module; once set, the battery will keep time while the main power is removed. Replace the coin cell when timekeeping becomes unreliable or when battery voltage drops below the required threshold.

Usage recommendations

For reliable long-term operation, use a fresh high-quality CR2032 cell and avoid prolonged exposure to extreme temperatures. Verify polarity during installation and follow standard sewable electronics practices to prevent short circuits in textile projects. Periodically check the time and replace the battery as part of regular maintenance for devices that require accurate timestamps.