Introduction

CircuitPython driver for the Adafruit RV-8803 High Accuracy Real Time Clock Breakout Board

Dependencies

This driver depends on:

• Adafruit CircuitPython

• Bus Device

• Register

Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle or individual libraries can be installed using circup.

Purchase one from the Adafruit shop

Installing from PyPI

On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally from PyPI. To install for current user:

pip3 install adafruit-circuitpython-rv8803

To install system-wide (this may be required in some cases):

sudo pip3 install adafruit-circuitpython-rv8803

To install in a virtual environment in your current project:

mkdir project-name && cd project-name
python3 -m venv .venv
source .env/bin/activate
pip3 install adafruit-circuitpython-rv8803

Installing to a Connected CircuitPython Device with Circup

Make sure that you have circup installed in your Python environment. Install it with the following command if necessary:

pip3 install circup

With circup installed and your CircuitPython device connected use the following command to install:

circup install adafruit_rv8803

Or the following command to update an existing version:

circup update

Usage Example

import time
import board
import adafruit_rv8803

i2c = board.I2C()  # uses board.SCL and board.SDA
rtc = adafruit_rv8803.RV8803(i2c)

days = ("Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday")

if False:  # change to True if you want to set the time!
        #                     year, mon, date, hour, min, sec, wday, yday, isdst
        t = time.struct_time((2026, 10, 29, 15, 15, 0, 3, -1, -1))
        print("Setting time to:", t)
        rtc.datetime = t
        print()

while True:
        t = rtc.datetime
        # print(t)     # uncomment for debugging
        print(f"The date is {days[int(t.tm_wday)]} {t.tm_mday}/{t.tm_mon}/{t.tm_year}")
        print(f"The time is {t.tm_hour}:{t.tm_min:02}:{t.tm_sec:02}")
        time.sleep(1)  # wait a second

Documentation

API documentation for this library can be found on Read the Docs.

For information on building library documentation, please check out this guide.

Contributing

Contributions are welcome! Please read our Code of Conduct before contributing to help this project stay welcoming.