Showing posts with label clock. Show all posts
Showing posts with label clock. Show all posts

DS3231M Real Time Clock Breakout

Friday, September 19, 2014 | Labels: , , , , | 0 comments |
The DS3231M breakout board is a compact breakout board for the new DS3231M high precision real time clock chip. With it, you can add timekeeping and alarm functionality to any Arduino (or other microcontroller that supports the I2C/TWI protocol).



The board comes with an onboard CR1220 backup battery (keeps time when main power is disconnected). All pins on the chip are broken out, allowing you to use extra features such as 1Hz and 32kHz square wave output, interrupt on alarm and reset. [Link]
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An LCD Clock Kit Suitable for Beginners with Open Source Arduino Firmware

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Simpleclock is an easy to assemble attractive 4-digit 7-segment LED display clock with temperature and alarm function. It is available in three display colors: Red, Blue and White. It comes as a kit of through-the-hole parts and can be soldered by any person with basic soldering experience. An attractive acrylic stand is included. [Link]

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Simple Clock pulse Generator with CD4049

Sunday, May 26, 2013 | Labels: , , , , , | 0 comments |
If you want to generate clock with CD4049 CMOS you can do as the follow picture.The typical resister values is 100K and Capacitor is 0.01-0.1uF.The output frequency is about 1/1.1RC ___Hz

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