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Temperature goes above ZERO.Positive temperature is displayed correctly.When i keep thermistor in freezeo then temperature does't go below ZERO.

Tkanks Henrik.I got my work done.
I had one more problem.iam making Thermistor based thermostat. My problem is my temperature does not go below 0 degree. Please help me out.

Iam working with 16F876A.i want to store and read two different word in eeprom at different locations.
For first word i used

Write 0,numb.highbyte
Write 1,numb.lowbyte

What be for second...

Not able to solve problem.tried many times.

An example needed.iam using 10 bit adc and sensor is 10k thermistor.

Thanks Scampy for clearing my doubts .what you explained is very easy to understand..thanks & regards

i tried that code but again temp is not going below 0.No minus sign.7848

IAM MAKING TEMPERATURE CONTROLLER USING ntc THERMISTOR FROM -10 DEGREE TO 50 DEGREE.BUT MY TEMPERATURE IS NOT GOING BELOW 0. PLS CHECK MY CODE AND GUIDE ME.THANKS




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I want to know about oversampling techniques for getting 12 bit adc result from 10 bit adc micro.pls guide.

I will share my schematic tomorrow? Thanks Demon ( ji)

My problem is solved by using a 220 uf capacitor in my thermocouple amplifier. Now another problem arose .I think my circuit hangs.After running fine for a hour display on seven segment goes off.When...

Here is my code_----


'DIGITAL TEMP CNTROLLER USING 16F876A'


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Load is 4 kw heater.Somebody in here in Lucknow ( India) told me to use comparator voltage reference module.I don't know what to do .Confused.

Actually in my temperature controller circuit ADC value fluctuates with wide range when a heavy load through a relay is connected.I am using 16f876a micro and Pin A0 as ADC input.

Pls tell me what is the use of comparator voltage reference module?

Temperature display on seven segment display fluctuates. I used 0p07 and 324n for amplifying thermocouple voltage.

I am using 16f876A micro for a temperature controller using thermocoule.when heater contactor starts , temperature goes very high for couple of seconds( it fluctuates for second )
.Any thing I can...

Please give me an example.

Iam not able to read & write internal eeprom Of 16f876A.
My code is...


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Thanks sir.

I have added .but no result.pls guide me if I have done anything wrong with my program regarding if then... Statement.As I am using active low buttons.

I am driving three common cathode seven segment display.I want to put three buttons on PORT A.first button is for increase counts ,second is for decrease count and third is for save count.Buttons...

Actually iam new to microcontrollers.

Can you tell me whw to active analog features pls.

Iam making an up down counter using 16f913.Iam not able to make portA pins as input A2,A4,A5

Iam using active low buttons

My code Is:



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