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PIC16F877A Digital Thermometer with Clock

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kaizer002

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Hello guys, I need some advice for my project. It's a digital thermometer with clock using seven segment LED. The sensors that will be used in this project are LM35(temperature sensor) and HIH4000(humidity sensor) but the problem is, the HIH4000 is not available in our country.

Because of that, I come up with this idea. Is it okay to remove the HIH4000 sensor and I will connect the 2nd pin of LM35 to pin A0 and pin A1 of PIC16F877a?

here is the original schematic:

**broken link removed**

Removed HIH4000 and LM35 connected to pinA0 and pinA1:

**broken link removed**



Source code on attachment...
 

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  • PCB CLOCK THERMO 7-SEG-Ver-2.txt
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sir
i like to build this..
did u try it and did ur changes succesful?
pls reply
reg
 

If you cant get HIH in your country, then you can just remove it from the circuit .
There is no need to connect LM35 to RA1, why would you want to connect LM35 to both RA0 and RA1.

Secondly just comment out instances of HIH, compile and burn to the mcu. It will work.
 
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abidr said:
If you cant get HIH in your country, then you can just remove it from the circuit .
There is no need to connect LM35 to RA1, why would you want to connect LM35 to both RA0 and RA1.


Secondly just comment out instances of HIH, compile and burn to the mcu. It will work.
Click to expand...

dear sir can u do it (comment out instances of HIH ) post the program here to download,it will be very big help for me to build this as a newbie
thanks
 
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No need to connect Lm35 to two analog channels, just ground the 2nd analog channel if you don't want to change the code....
 
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hussain_kiet said:
No need to connect Lm35 to two analog channels, just ground the 2nd analog channel if you don't want to change the code....
Click to expand...

if we not change the codes for 2nd analog channel,display will try to show some thing kno?am i right?
can any expert remove this humidity part in program me and re-post it ?
 

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