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

rawat742
Fri Aug 18 2017, 11:37 AM
hi @ angel patel i will attach a file i hope it will be helpfull for you
ExperimenterUK
Mon Aug 14 2017, 09:57 PM
@ angel patel... just log in and post your problem
Mon Aug 14 2017, 01:45 PM
angel patel
hey any one help to make the led scrolling display
desuza6
Sat Jul 29 2017, 07:09 AM
I see the code for step motor h l 298 to rotate 45 degree, but all delay time, if I want to input sensor to h the pulses to stepmotor
rammichael
Thu Jul 27 2017, 12:05 PM
okay fine
ExperimenterUK
Wed Jul 26 2017, 07:51 PM
Please post questions in the forum, the chat box is for chat
msd007
Wed Jul 26 2017, 11:27 AM
i need code if any one have aduc706 interfacing lcd 16*2
msd007
Wed Jul 26 2017, 11:26 AM
pl help me how to write code of interfacing ADuc7026 controlleo lcd pl any one help me hoe to initializend configure the direction
rammichael
Wed Jul 26 2017, 06:04 AM
can you explain what is timer and how to use their modes ...
rammichael
Wed Jul 26 2017, 06:03 AM
ExperimenterUk thank you for your quick reply okay

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Pirateak
Thu Aug 17 2017, 02:02 PM
sathishksk71
Wed Aug 16 2017, 04:47 AM
rawat742
Sun Aug 13 2017, 05:49 PM
alparslanbagriyanik
Fri Aug 11 2017, 08:10 AM
Thanhquan
Sat Aug 05 2017, 05:17 PM
NAMRATHA
Thu Aug 03 2017, 08:32 AM
Kgj
Tue Aug 01 2017, 12:41 PM
Ingketech
Sun Jul 30 2017, 01:03 PM

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Forum Activity
rawat742 Avatar
Posted By rawat742
Fri Aug 18 2017, 11:45 AM
LCD SCROLLING MESSAGE PROGRAM CODE AND SIMULATION...
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Posted By rawat742
Fri Aug 18 2017, 11:24 AM
Dear Sir , I am not able to increased value by pre...
rawat742 Avatar
Posted By rawat742
Fri Aug 18 2017, 11:19 AM
Dear Sir, as per your attachment I w...
ExperimenterUK Avatar
Posted By ExperimenterUK
Thu Aug 17 2017, 10:54 PM
Try this. Attachment ...
rawat742 Avatar
Posted By rawat742
Thu Aug 17 2017, 08:24 PM
Dear Sir , Please help me for stor...
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Posted By sathishksk71
Wed Aug 16 2017, 04:53 AM
Hi.. Iam refreshing c language using this useful r...
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Posted By ExperimenterUK
Mon Aug 14 2017, 10:19 PM
The original 8051 is a primitive device.Over the ...
rawat742 Avatar
Posted By rawat742
Mon Aug 14 2017, 06:52 AM
Dear sir, First of all i want to thanks to you fo...
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Posted By ExperimenterUK
Sun Aug 13 2017, 11:25 PM
Reading page 11 of the data sheet, it is not clear...
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Posted By ExperimenterUK
Sun Aug 13 2017, 11:11 PM
The basic 8051 has no eeprom and you can't reprogr...