DS3231

The DS3231 is a low-cost, extremely accurate I²C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, and maintains accurate timekeeping when main power to the device is interrupted. The integration of the crystal resonator enhances the long-term accuracy of the device as well as reduces the piece-part count in a manufacturing line. The DS3231 is available in commercial and industrial temperature ranges, and is offered in a 16-pin, 300-mil SO package. The RTC maintains seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with an active-low AM/PM indicator. Two programmable time-of-day alarms and a programmable square-wave output are provided. Address and data are transferred serially through an I²C bidirectional bus. A precision temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power failures, to provide a reset output, and to automatically switch to the backup supply when necessary. Additionally, the active-low RST pin is monitored as a pushbutton input for generating a µP reset.

Main Content

Arduino RTC Bird Feeder v2.0 for Poultry Conditioning

“Feed the poultry in quotidian routine to condition them - sensory preconditioning - to improve egg production and hatching process. I was keeping quails, chickens, and ducks in my garden before I moved, but it was struggling to manage to feed them …

Mechanical-Digital Steel Ball Clock

“So I decided to finally learn how to use an Arduino and worked my way up to my very first project, a digital clock that is completely mechanical. Enjoy! Supplies: Electronics (1) Arduino Nano (2) PCA9685, 16-Channel 12-bit PWM/Servo …

7 Segment Clock Version 2

“Hello! After a request from Instructables user regarding availability of 12h format, i took advantage to make substancial changes to the original project. During using of the version 1 i felt the need to make a stand-alone version, so I …

MutantC V3 - Modular and Powerful HandHeld PC

“A Raspberry-pi handheld platform with a physical keyboard, Display and Expansion header for custom boards (Like Arduino Shield). mutantC_V3 is successor of mutantC_V1 and V2. Check out mutantC_V1 and mutantC_V2. https://mutantc.gitlab.io/ https://gitlab.com/mutantC https://www …

PYcARD (Jean-Luc) - Python+Arduino in card shape

“SamD21 card development platform with 22x5 led matrix display, sd card, battery, environment sensors - wallet development platform :)- badge / wrist band holes ( wearable )- compatible board with micropython (CircuitPython) - extra thin Display from here https://hackaday.io/project/18014-5-alphabets-charlieplexed-matrix-display-22x5- I2C header for …

Arduino Nano Project Displaying Clock, Calendar and Internal and External Temperatures

“This project is about building your own micro controller hardware and software. The micro controller is the Arduino Nano. The development software platform is either PlatformIO or Arduino development studio. After years of programming mainframes, mini-computers, and desktop computers I …

Project  PiCon One

PiCon One

“PiCon One is a multi-function controller for home automation and industrial use cases. Picon One is a multi-function controller based on smallest member of the Raspberry family, the Raspberry Pi Zero W. Instead of adding a “hat” on top of …

LEDura - Analog LED Clock

“After a long time of just making various project I decided to make an instructable myself. For the first one, I will guide you through process of making your own analog clock made with awesome addressable LED ring. The inner …

Making an Arduino OLED Ring Clock

“I have bought a tiny OLED display, its clean and clarity draw my attention. But what can I do with itActually, the point is how can I show it off… Lol. Well, when I looked at the poster of The …

Big Arduino LCD Clock With Two Alarms and Temperature Monitor Controlled by IR TV Remote

“How to build an Arduino based LCD Clock with Two alarms and temperature monitor controlled by IR TV remote. This is an LCD clock made with DS3231 real time clock module, which unlike DS1307 has the possibility of Alarm and …