These posts by sashijoseph have received thanks:

"IR SWITCH SOURCE CODE HELP".......
@Renil
You can write the C code yourself...no big deal.

Go through this page which explains the nitty-gritties of RC5 decoding and write some scratch code.We'll assist you from there...
...
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Posted by sashijoseph on

Voltage regulator
The pot and R123 together form a voltage divider whose output is connected to the 'set' pin of the regulator.The voltage divider is connected to the micro's Vcc through voltage follower U74A.
So a repr...
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Posted by sashijoseph on

Current measurement circuit
think of it this way...
the INA sees a small differential voltage 1mV riding on a big common mode voltage 5000mV.To extract that 1mV,it has to reject 5000mV.For it to do so with an accuracy of 0.1%(Pre...
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Posted by sashijoseph on

Urgent help !
Go through the tutorial here...
http://www.8051projects.net/serial-communication/
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Posted by sashijoseph on

Heart Beat sensor
the 470nF along with the 47k resistor forms a high pass filter with a 7Hz corner frequency....basically a dc blocker.

Use some kind of a closed enclosure for the LED-LDR setup to minimise ambient distu...
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Posted by sashijoseph on

help me with the code
your pullups are wired in series...they should be tied to Vcc(place pullup resistors between the port pins and VCC)
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Posted by sashijoseph on

..how to stop PCA..
@Shaik

You are turning off the pca timer with CR=0 but the CCAP module is still in PWM mode.
Turn off the PWM mode by making the CCAPMn register 0x00

try and see if it works.
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Posted by sashijoseph on

vb code
this might help
http://www.8051projects.net/e107_files/public/1189441710_383_FT2138_vbcom.pdf
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Posted by sashijoseph on

14.5 V output needed from PC SMPS
Hi Abhinav....
too bad your smps went up in sparks.

can you check which electros blew up.The high voltage side would be ok,I guess.
the output ones most probably were in a hurry for Diwali.

you may try re...
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Posted by sashijoseph on

14.5 V output needed from PC SMPS
first you must identify the the resistive divider across the 12v output which is used to feed the TL431's reference input.
next add a 2k pot in series with the upper resistor(the resistor from the 12v ...
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Posted by sashijoseph on

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