Heart Beat Sensor


Heart beat is sensed by using a high intensity type LED and LDR. The finger is placed between the LED and LDR. As Sensor a photo diode or a photo transistor can be used. The skin may be illuminated with visible (red) using transmitted or reflected light for detection. The very small changes in reflectivity or in transmittance caused by the varying blood content of human tissue are almost invisible... Read Compelte post

Posted by abbas1707 on Tue Mar 04 2008, 09:19 PM

Heart Beat SEnsor VB code

Information on heartbeat sensor:
http://www.8051projects.net/forum-t5948.html#post_6461

Working description:
http://www.8051projects.net/forum-t5948.html#post_6535

Now for VB stuff... once you count number of pulses you can send them to PC via serial port and they can be updated in VB software.... Read Compelte post
Posted by ajay_bhargav on Tue May 20 2008, 06:02 AM

Conversation

ExperimenterUK
Wed Apr 15 2015, 05:07 PM
@Bibek.. and everyone. Create threads if you need help. The chat box is just for chat
ExperimenterUK
Wed Apr 15 2015, 05:06 PM
@mohd atif ..login..create a post/thread,then I can post a copy of the missing file
Mon Apr 13 2015, 07:03 PM
mohd atif
@experimenteruk I didn't get you
Sun Apr 12 2015, 04:18 AM
Bibek
hello, i have made a digital clock using rtc DS12887 and AT89S52 with date n callender. Now i want to add alarm features to it.....can any body help me with the code in assembly language
Sun Apr 12 2015, 03:22 AM
SANJU123
Hello, I am planning to do simulaton of the ' 4-way traffic controller'. As a first stage of the project, I tried to compile the code given in this website in keil microvision which controls 4-way traffic . I am using AT89C51. But when I am trying to compile the code it shows an error " Device is not supported by Toolchain". Can u please help me...
Sat Apr 11 2015, 02:06 AM
Suryamoy Mondal
There is a little bit confusion to connect the rs232 connector to max232 ..By continuty test i cant able to find , which wire from the other side of the RS232 connector , i connect to max232..is there any colour coding?
ajay_bhargav
Fri Apr 10 2015, 06:19 PM
@Suryamoy, The PC control software is provided within the package. Follow the steps to install and test it.
Fri Apr 10 2015, 05:24 PM
Suryamoy Mondal
my final year btech project is pc remote control..i have made the hardware and microcontroller prograaming from yours project..bt i cant able to implement in PC..so wht kind of software need for pc to access this..please sir reply me ..i need your help
ExperimenterUK
Wed Apr 08 2015, 04:46 PM
@mohd atif If you create a thread, I may be able help
Tue Apr 07 2015, 03:59 PM
mohd atif
i am working on a project evm. i download the evm project from this site named Electronic Voting machine with Managed Control Unit . i face problem in this when i am trying to simulate this on proteus . there is an error " could not open MODDATA initializer file mem.bin" please help me to get out this problem

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Comments

samarhbk
Sat Apr 18 2015, 12:57 PM
chitty789
Tue Apr 14 2015, 06:14 PM
yaseenshaikh
Tue Apr 14 2015, 03:41 PM
sanju123
Mon Apr 13 2015, 03:51 PM
mohanadelnokaly
Wed Apr 08 2015, 07:02 PM
auchil
Mon Apr 06 2015, 07:07 AM
adityavyas75
Mon Apr 06 2015, 05:03 AM
rajendraprasadlawate
Sun Apr 05 2015, 08:20 PM

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Forum Activity
gaurav7577 Avatar
Posted By gaurav7577
Fri Apr 17 2015, 03:26 PM
thanks ajay for ur concern .....passed out B.E.......
ajay_bhargav Avatar
Posted By ajay_bhargav
Fri Apr 17 2015, 12:49 PM
can you post screenshot or a picture of CRO output...
ajay_bhargav Avatar
Posted By ajay_bhargav
Fri Apr 17 2015, 12:45 PM
are you in a college or working?
ajay_bhargav Avatar
Posted By ajay_bhargav
Fri Apr 17 2015, 12:44 PM
GSM modem needs a power supply with minimum 2A pea...
ajay_bhargav Avatar
Posted By ajay_bhargav
Fri Apr 17 2015, 12:41 PM
check it on CRO with 10x probes, you will see a si...
mayank058 Avatar
Posted By mayank058
Fri Apr 17 2015, 11:03 AM
The output was low in the scope and I am using MCB...
gaurav7577 Avatar
Posted By gaurav7577
Fri Apr 17 2015, 10:13 AM
Hello friends, i wanna do embedded course ...
ExperimenterUK Avatar
Posted By ExperimenterUK
Fri Apr 17 2015, 05:30 AM
In simulation everything went good but I am not a...
mayank058 Avatar
Posted By mayank058
Fri Apr 17 2015, 04:49 AM
dear sir, Actually DAC output pin is 0.26..so I think bit 21 must be set to get output on PIN 0.26. In simulation everything went good but I am not able to get output on CRO by using the board.
ExperimenterUK Avatar
Posted By ExperimenterUK
Thu Apr 16 2015, 07:36 PM
I am using my internship kit, it uses AT89C52.sati...