Biomedical monitoring system (at89c2051 + tx/rx)

i need the real picture of walking stick & heartbeat sensor project

hmm... sir which one can measure temperature?
and R12 is what? is that ldr??

thanks

What kind of LDR are you using? I have built the project but am having a hard time getting a signal through a finger. I am using a high intensity red LED

binuji can u tell if i want to use Ds1820 sensor for temperature measurement what all changes i need to make in ckt and and program.

thxxx

Well, thank you for such great project.
I'd like to know whether there's a better equivalent for "HT12d & HT12E" or anything that would be existed for "Proteus".
That would be highly appreciative, Thanx in advance.

Thanx alot for such a great project, actually I decided to have it for my graduation project or to be a part of it at least.
But seriously I faced a problem with finding some parts in the simulating program "Proteus" even in finding 'em in the local market, so could u pls get me the equivalent parts, would be so appreciative and greatfull, the parts r "HT 12E/D DS1621"

sir did you change the AT89C2051 to PIC16f877a microcontroller?

did u have the source code?

in heart beat monitor circuit....the 220E is resistor? what mean by 'E'

DS1821 measures the temperature and R12 is the LDR which used to measure the heart beat.

you can use any LDR. try to use an CRO to view the pulse. Also adjust the preset R17.

If you want to use ds1820 then remove the ds1821 circuit and the code. Replace the ds1821 code with ds1820 code.

They are freely available components. Check your local market.

No, we have the code only for 8051 micros.

E stands for Ohm.

bms

how transmitter section connected to sensor