Skip to content

Octopus Electronic Bricks, you can use them to build electronics projects just as easy as piling bricks. By using Octopus electronic bricks, you may connect Arduino / Freaduino compatible boards easily with various digital, analog and I2C/Uart interfaces. These the breadboard-less firm connection are prepared to extensive modules like poteniometers, sensors, relays, servos ... even buttons, just plug and play.

OCTOPUS Real-time Clock is a clock module which can achieve counting for year, month, day, hour by using the DS1307 clock chip.This chip has lots of merits, low power supply, with 56 bytes of non-volatile RAM clock calendar full BCD code real-time clock chip, the address and data via a two-wire bidirectional serial bus transmission, providing seconds, minutes, hours and other information , automatically adjusting the number of days in each month. And more surprisingly, the chip also equip with the function of leap year compensation. Chip has a built-in power-sense circuit, brownout detection, and battery switching function.

Connecting types:


l Available for counting the seconds, hours, minutes, days of month, months, days of week 

With the function of leap year compensation. 

Year recording to the limit of 2100.

56 bytes of non-volatile RAM

Two-wire serial interface (IIC communication)

Programmable square-wave output

Automatic power-off detection and switching circuit

In battery backup mode, power consumption is less than 500nA

Industrial operating temperature: -40 to 80

Power supply needs: 5V and 3.3V

Interface type: Digital

Pin Definition: 1-GND 2-VCC 3-SCK 4-SDA 5-RST



Octopus Real-time Clock sch

Octopus Real-time Clock code

Please visit the ElecFreaks wiki page for more info about this product. It will be appreciated if you can help us improve the documents, add more demo code or tutorials.

The Octopus Real-time Clock appears in the following collections:

SKU EF-EF04005