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lf356 interface with 89c51 along with adc

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vicky29

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lf356 circuit

dear friends

this circuit is used to measure light intensity using the following basic analog circuit .... now i want to use microcontroller (89c51) and adc -AD7922 (12 bit)
so that i can include some more functions and also 16 x 2 lcd . in the present circuit two pots are used one for zero setting and other for calibration in 741 section . can these two be removed using programming technique.... the output voltage of lf356 varies from 0- 60 mV ....
how can i change the circuit to make it fully microcontroller based to that i can do the settings using keypad control.....
can anybody help me out with this please

thank you
 

source code for can interface in 89c51

For calibration and zero you can use digital potentiometers (See Maxim-Ic web site for data sheets on selected units, example here: **broken link removed** ).

Here are some examples of connecting LCD display and keypad to 8051-family:
**broken link removed**
**broken link removed**
If you prefer, instead of a keypad, you can use a standard PS/2 keyboard. Connection is easy (interrupt (clock) + data line).
It is just something to think about ..

Regards,
IanP
 

ds1803 interface with 89c51

How i find source code for P/S2 interface with 8051

thank a lot.
 

adc 89c51

For C-code try:

For assembly:
**broken link removed**
Regards,
IanP
 

interfacing 89c51 with adc code

at philips website, this code is not complete. i tried but there some difficult with compound key ( such as : ctrl+shift, ctrl+ shift+XX, shift/alt/ctrl lef and right, ...)

may i have another links for P/S2 interface with 8051 complete source code?

Thank a lot.
 

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