Bit Trade One ADRSRTC Real Time Clock Expansion Board for Raspberry Pi

The Raspberry Pi Real-Time Clock Expansion Board is an expansion board that adds real-time clock (RTC) functionality to a Raspberry Pi (hereafter referred to as Raspberry Pi).
It provides accurate time to your Raspberry Pi even in a standalone environment without a network. It uses the RTC DS3231, which has a high-precision crystal oscillator built in, and uses an on-board coin battery to maintain the time even when the Raspberry Pi is turned off.
In addition to the RTC function, it also has an OLED display, external connectors, a piezoelectric buzzer, switches, and LEDs, making it suitable for a variety of uses.
[Product Features]
High-precision RTC function using DS3231. The built-in temperature-compensated crystal oscillator (TCXO) provides highly accurate timekeeping.
The on-board coin battery allows the time to be kept accurate even when the Raspberry Pi is turned off.
[Can be linked with RTC, with a wide range of functions]
・OLED display (0.91 inch, 128 x 32 pixels)
・LED x 4
・Tact switch x 4
・I2C external connector (GROVE) *3.3V
-RTC backup battery holder (CR2032)
・Piezoelectric buzzer
・RTC for Raspberry Pi
・Raspberry Pi learning ・Alarm clock (NTP compatible)
・Sensor & logger (using GROVE terminal)
*Please note! To use this product, you need general knowledge about electronics and electronic circuits.
*(*Raspberry Pi is not included.)