DS1307

The DS1307 serial real-time clock (RTC) is a low-power, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an I²C, bidirectional bus. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date 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 AM/PM indicator. The DS1307 has a built-in power-sense circuit that detects power failures and automatically switches to the backup supply. Timekeeping operation continues while the part operates from the backup supply.

Main Content

Automated Perpetual Calendar

“Years ago I came across a wooden perpetual calendar and I loved the idea. After thinking about it for months I decided I wanted to make one myself; however, there was a long list of things I wanted to do …

7-segment Mini Clock using PIC16F628A and DS1307 RTC

“This is a minimal and small clock based on PIC16F628A microcontroller and DS1307 RTC IC. It is able to only show the time on a small 7-segment display with a total of 4 segments. The display we used is a …

Project  Zen Clock

Zen Clock

“Most of you have seen those LED clocks shown here on Instructables, as I did. For me they where quite to complicated to build, requiring a CNC or awesome wood work skills. So I’ve created my own approach with …

7219 Tube Clock

“This is my first instructable. I got my inspiration for building this clock from https://nixieclocks.shop/product/energy-pillar-iv…. I liked the design of the clock and thought that VFD tube is difficult to find so I took 7219 seven …

Budget Arduino RGB Word Clock!

“Hello everyone, here is my guide on how to make your own simple & cheap word clock! Tools you will need for this project Soldering Iron & Solder Wires (Ideally at least 3 different colours) 3D Printer (Or access to one, you …

Project  ROME Clock

ROME Clock

“Hi everyone, In this Instructable, Ill show you how I built a Roman letter clock, that uses an 8 by 8 neopixel matrix. I just bought the ws2812b 88 led matrix for making an ordinary clock, but when I …

Open Source Arduino Learner Kit V2

“Last year, I made my first Arduino Learner Kit for making the Arduino learning easy to a beginner. Over the year I discovered few bugs on my design. I also got some feedback from the readers to make a few …

Minimal parts simple word clock

“Simple word clock using 2812b leds. This was a project I wanted to do when I saw it on project hub, but using shift registers, external power supply and complicated wiring didn’t allow me to pursue it. When 2812b …

BT LED Matrix Display - 80x8 Px Arduino Based

“In this guide I will show you how to make your own Arduino LED Matrix display! In this project I decided to make my own PCB that is based on Arduino UNO microcontroller - Atmega328p. Bellow you will find the electronic …

Arduino Learner Kit (Open Source)

“If you are a beginner in Arduino World and going to learn Arduino having some hands-on experience this Instructables and this Kit is for you. This Kit is also a good choice for the teachers who like to teach Arduino …