ds3231-rtc

Battery-powered e-paper sign: room signage, sensor graphs, home automation, or anything over Wi-Fi. Wakes by real-time clock, NFC tap, or button. Raspberry Pi Pico W firmware, custom PCB, and 3D-printed case included.

ESP32-C3 automatic plant watering system using capacitive moisture sensor and DS3231 real-time clock. Logs watering history to Google Sheets document. Configurable and firmware upgradable via standalone WiFi Access Point and webserver.

Using NodeMCU ESP8266 for controlling switches (Relay). Uses RTC (Real Time Clock - DS3231) and NTP (Network Time Protocol) for maintaining time. OLED Display (128x64) for instant updates. A webserver for Manual Controls. Vast application including Aquariums and IOT related.

High precision GPS disciplined NTP server for ESP32

RP-Pico C library for DS3231 RTC module.

DS2321 Driver for Pi Pico

Rotating WS2812 persistence of vision (POV) clock using STM32C5/MX2/HAL2.

The project integrates an Arduino with a DHT11 sensor for measuring temperature and humidity, along with an RTC DS3231 module for maintaining real-time clock functionality. The Arduino periodically reads data from the DHT11 sensor and RTC module, calculates the heat index, and sends all data (including date, time, temperature, and humidity)

Arduino 24 Hours Clock using MAX7219 LED matrix,with selectable Fonts

TM1637 4-digit clock with DS3231 and DHT11 — DSD project.

Advanced 4-Channel ESP8266 IoT Relay System featuring a real-time embedded dark mode UI, WebSocket sync, DS3231 RTC scheduling, and OTA updates.

An arduino nano - DS3231 RTC setup for setting an alarm at a precise time

Cyclic timer module based on Arduino and DS3231 RTC, featuring dual opto-isolated relay outputs for time-based automation.

Accurate ESP8266 digital clock with DS3231, OLED display, DS18B20 temperature, and NTP sync.

Starter Peripheral Board for Embedded Development Learners

Project automated-relay-using-DS3231RTC by lily-osp

This code will help to get date time values arduino related project without RTC_DS3231 Libarary and Only need Wire.h Library

Automatic school bell system based on ESP32 with a user-friendly web interface 🔔📯📣

An Arduino nano - DS3231 setup for displaying the current time

I built a real-time clock and LCD display calendar using PIC16F877A and DS1307 RTC module.