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

Thu May 21 2015, 01:04 AM
utpal
i am a hobbist. i work on 8051. just i have started with pic 16f877. but a bitter experiance is going on. as i am programming any code to my pic877 and putting it in my board and it is working, but the 2nd time it is not taking any program,I have experimented just 7 new one pic mcus. result is the same. please tell me the reason. my programmer is TOP3000(universal programmer).
ajay_bhargav
Wed May 20 2015, 04:48 AM
@lak you can use the same code provided you are not using any s52 specific ports and registers.
Mon May 18 2015, 05:58 AM
lak
i used to develop a code for at89s52 shall i use the same code for at89c4051
Sun May 17 2015, 07:57 AM
Ayoosh
what if i have to rotate motor continuously at a step angle of 1.8 degree
ExperimenterUK
Fri May 15 2015, 06:02 PM
@oracle1946.. Post your question in the PIC forum
Fri May 15 2015, 03:48 AM
nadeem232
if some has solution kindly share solution Principles of Electric Circuits,by Thomas L. Floyd
oracle1946
Thu May 14 2015, 03:39 PM
I want to build a PIC16F684 sun logger using either a solar cell (0.5v solar cell or photoresistor). Any help out there?
Thu May 14 2015, 11:59 AM
Ramprasad Malviya
please sir send me moving led display programming in asm&c language
ajay_bhargav
Thu May 14 2015, 04:43 AM
@bach please post in forum and let us know which software are you using
Tue May 12 2015, 10:25 AM
bach
hi guys, im kinda new to all of this. im looking for a splice model of the l293 IC and would be very appreciative if someone can point me in the right direction.

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Comments

as_rog
Sun May 17 2015, 08:00 AM
oracle1946
Thu May 14 2015, 03:34 PM
kakaru32
Tue May 12 2015, 04:29 PM
Yateesh
Sat May 09 2015, 02:46 AM
scmg
Fri May 08 2015, 06:40 PM
OMERO
Fri May 08 2015, 11:53 AM
Carlos55
Fri May 08 2015, 02:14 AM
osman6464
Thu May 07 2015, 02:38 PM

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mayank058 Avatar
Posted By mayank058
Thu May 21 2015, 04:46 AM
dear sir there is nothing to zip.I just...
ajay_bhargav Avatar
Posted By ajay_bhargav
Wed May 20 2015, 04:57 AM
can you zip your complete project and attach it he...
ajay_bhargav Avatar
Posted By ajay_bhargav
Wed May 20 2015, 04:46 AM
If you know how to drive 7-seg using an 8-bit port...
ajay_bhargav Avatar
Posted By ajay_bhargav
Wed May 20 2015, 04:42 AM
There was no proteus file included in the package,...
ankitbajaj01 Avatar
Posted By ankitbajaj01
Tue May 19 2015, 07:00 AM
Hello ExperimenterUK...Please guide me on above po...
mayank058 Avatar
Posted By mayank058
Tue May 19 2015, 04:54 AM
Sir I want to measure the analog signal on CRO.
ElectronicManiac Avatar
Posted By ElectronicManiac
Mon May 18 2015, 07:52 PM
There was no proteus file included in the package,...
ExperimenterUK Avatar
Posted By ExperimenterUK
Mon May 18 2015, 04:16 PM
Does the speaker work?.'Exactly' where on the boa...
mayank058 Avatar
Posted By mayank058
Mon May 18 2015, 06:01 AM
dear sir, when I use your code on the...
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Posted By Rakesh_suthar
Sun May 17 2015, 05:42 AM
hi ,I am working rtc by avr with seven segment .bu...