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Clocks / RTC (Real Time Clocks)
This Real Time Clock (RTC) is the most precise you can get in a small, low-power package.
Accurate RTC FeatherWing with I2C, TCXO and CR1220 backup support. Ideal for datalogging, clocks and Feather board projects.
Precise DS3231 real time clock for Raspberry Pi with CR1220 backup, direct GPIO mounting and native kernel support.
Battery-backed real time clock for Raspberry Pi with PCF8523. Plugs directly into GPIO with no soldering, ideal for logging and timekeeping.
The Adafruit PiCowbell Adalogger is to assist your Raspberry Pi Pico and Pico W project with hardware datalogging.
Adafruit DS3231 Precision RTC Breakout with I2C, integrated crystal and temperature compensation for accurate timekeeping with battery backup.
An ultra-low-power highly accurate real-time clock breakout. The RV3028 RTC breakout is perfect for adding timekeeping to your project.
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Just mount this Real Time Clock Shield on the GPIO port of the ODROID to keep the time when your ODROID is offline.
The Grove - High Precision RTC is an extreme precise and low consumption RTC for Arduino projects.