• sgprojects.co.in.jpg

Digital Time Keeper

Here I'm introducing a simple and very useful project to store the running time of any device. The running time in minutes can be seen on a 7-segment display and can be reset at any time to it's initial zero condition by pressing a switch. It can be easily installed by connecting it in parallel with any device.

Digital Time Keeper

                   The reason to make behind this project is; one day a farmer in my area asked me that he want to keep remaind the total running time of the pump even on power failure. Then I decided to make this one and now he feel reliable to calculate the running time easily.

The project is made with a microcontroller (AT89C2051), EEPROM chip(AT24C02), common anode 7-segment display etc. Pushbutton PB1 is to refresh the system and PB2 is for reset the project to '0000'. The circuit requires 5V DC supply that be achieved from many of DC operated equipments. If you want to connect this project with any high voltage AC operated equipment then you need to install a step down circuit also. During running condition, the mcu makes a clock program to display the minutes and stores these values on EEPROM chip. When power supply resets, the project restarts from the last stored time.

Digital Time Keeper

Download the firmware.



Add comment

Security code


Jan Berkowitz Biz
#5 Jan Berkowitz Biz 2014-08-21 18:07
Hello there, just Ьecame aware of youг blog thгough Google, ɑnd
found tҺat іt's trսly informative. I'm going to watch
ߋut for brussels. I'll appгeciate if you continue
this іn future. Many people will be benefited fгom
your writing. Cheers!

Ϻy blog - Jan Berkowitz Biz
#4 Linwood 2014-08-02 08:36
Generally I do not learn article on blogs, but I wish to say that this write-up
very forced me to try and do so! Your writing taste has
been amazed me. Thanks, very great post.
#3 Sherlyn 2014-07-31 12:37
I am not sure where you are getting your info, but great topic.

I needs to spend some time learning much more or understanding
more. Thanks for great information I was looking for this information for my mission.
#2 Christy 2014-07-30 17:11
Way cool! Some very valid points! I appreciate you penning this article and also the rest of the site is really good.
#1 blog1.de 2014-07-23 20:23
This is a topic that's close to my heart... Many thanks!

Exactly where are your contact details though?

Visitors Today6
Visitors Yesterday171

  • Your IP Address :


SG Templetes by Sameer Gupta