Neil Mula


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  • Smart Heart Alarm System

  • Created: Mar 25, 2014

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This simple project is designed to save life. The human heart releases several pulses that describes a condition of an individual. In this project, the heart pulse will become the input of the entire system. It is used to monitor the human condition remotely using GSM technology.

The 2500mAh battery was used since the GSM module requires a lot of current during transmission or reception stage. The GSM module serves as the transceiver of the system which function almost the same with mobile phones. It requires SIM cards to communicate within the network. Its primary function is to transmit an alarm signal to the rescuer or a person in charge of safety. The transmitted signal will include the location and condition of the person. The pulse sensor receives the signal pulses produced by the heart. The 74AUP1G57 device is a low-power configurable multiple function gate that also serves as a buffer which insures a jitter free transmitted signal. The Arduino Uno microcontroller analyzes the data received from the buffer and deliver a corresponding output to the GSM module. The LEDs and speaker serves as the notification and indication of the person in case he/she is located in a crowded area.

The design is perfect for our present situation since it covers safety. It can also be used in search and rescue during calamities and protection of individual from all kinds of threat.



very nice project

Posted: May 15, 2014

Emmanuel Galleto


Posted: May 15, 2014

Frank Pacquiao

isn't it amazing?

Posted: May 19, 2014

Franz Daryl


Posted: May 19, 2014


A totally useless, unfinished, circuit.

Posted: May 30, 2014

PB Fortich

This project is perfect for us student that will be having thesis soon. As I look at it, the designer wants us to take this design into our thesis since it does not spoil our innovative ideas. For me, this project is done.

Posted: Jun 04, 2014

the adventures of ti

nice :)

Posted: Jul 14, 2014



Posted: Aug 10, 2014

Kristina Izarra

this project might save a lot of lives :)

Posted: Sep 25, 2014


colin55, you are right about it.

Posted: Dec 31, 2014


daer Neil Edward i need how design microprocessor based appointment device with clock please help me

Posted: Jan 09, 2015


Excellent use of the Arduino and one of its shields! Is the code available for this project?

Posted: Feb 04, 2015

Neil Mula

Hi guys, thank you for taking some time scrutinizing this project. I wish I could answer all of your questions. Anyway, i think a lot of people already made the code of this project and they created better than I've created :D. You can simply google the project title then you'll find a lot of project similar to this one with far more modified techniques. @mess microprocessor based systems design deals time, PWMs, count, and capture it's quite tough topic to discuss here. God Bless.

Posted: Feb 04, 2015

Alhassan Bayoh

hello everyone am actually new here and am a student from Sierra Leone we really do lack many of such creative interaction as electronic students, so i aplead to guys to pls expose me to more of such forums and sites as i could also expand it in my university. also i can't find/ access the projects code or design process so please guide me. thanks

Posted: Jun 11, 2015



Posted: Oct 15, 2015


intuitive design

Posted: Dec 08, 2015


I'm new here. Why is an incomplete project listed in "Popular Designs"?

Posted: Dec 08, 2015

PB Fortich

@kronke this is a concept builder site and not for spoon feeding ahahahaha! because of this design several embedded development has been done that are related to this design. I build my 3 versions of this design in which I enjoy because I can feel that I'm the one who developed the design :)

Posted: Mar 09, 2016



Posted: Jun 21, 2016



Posted: May 04, 2017


may I have the coding please ? did you use 8051 ?

Posted: Nov 06, 2017


I need more information, the parts list and software that is used... Can you please tell me how I can build one myself - I need more information. Thank you very much. Tony

Posted: Sep 10, 2018

PB Fortich

@czecht he provide some details here ->

Posted: Sep 13, 2018



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