SparkFun gator:RTC - micro:bit Accessory Board

The gator:RTC is a supplemental data logging tool to be used in conjunction with the gator:log, part of SparkFun's gator:bit series of gator-clippable accessories designed for easy interface with the micro:bit or other microcontrollers. This tool allows a student to focus more on the experiment than watching a thermometer or stopwatch.

At its core is a RV-3028 real time clock (RTC) module from Micro Crystal, using a convenient I²C bus interface. The module enables you to track the year, month, date, weekday, hours, minutes, and seconds. It also includes an external event input with a handy time stamp function. It is extremely low power, running at about 40-60nA at 3V. The gator:RTC provides four pads for power and data and a built-in, rechargeable 3V lithium coin cell battery.

Features

• RV-3028 RTC module
  • I²C bus interface
  • Tracks year, month, date, weekday, hours, minutes, and seconds
  • External event input with time stamp function
  • Low power: 40-60nA at 3V
• Four pads for power and data
• Rechargeable 3V lithium coin cell battery

Documents

• Schematic (PDF)
• Eagle Files (ZIP)
• Hookup Guide
• RV-3028 Datasheet (PDF)
• RV-3028 Application Note (PDF)
• gator:RTC PXT Package
• GitHub Product Repo
• Dimensions (PDF)
• micro:bit Landing Page