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medelec35
Can you look at my file and tell me why output
AO, A1 AND A2 will not go to high.
this led is use 5v.
because it is not necessary to use resistor for them
john

Realizing that it was badly connected on the pull-down resistors
after I read what you wrote.
Was linked 10K between I/O pin and 5V
But now I have connected it to the I/O pin and 0V
So now it works as it should.
Should build on my project.
Thanks for your help

John

Do not know what I'm doing wrong. probably a piece of cake but I do not see the error. When I press the button, the LED will light up and it does in the simulation of flow code. but in reality it is the opposite, the LED goes off when I press the button 've had to work but can not remember how. John...

Can you make an example of that.
A small program that shows the solution

How do you do to get flowcode read falling edge on button release .
Would only have a signal / pulse when I release the button
Foppa

I answer myself
incorrectly pullup.
was connected to - instead of +

Hello everyone.
I'm trying to get DS18B20 function.
But it just shows -1 on the display.
And when I disconnect DS18B20 I get "no device found".
which means that DS18B20 seem to work.
or is it broken

Pic 16F690
8MHZ external crystal
pullup 4.7 Kohm
DS18B20 on bone RA0

Hello.
Now I understand what I have done wrong all the time.
I was sure that adj on lm335 was the outout to RA0.
So now it should be okay,.
Differ to some degree but I can fix it.
now that I know what it should be done.

Foppa

Hold the horses medelec35
I was wrong
Since I am a novice in this, I need a bit more assists
How do I know where I will connect ADJUST or should not be connected
And what is o / p.

crap and I thought that this was ok

Foppa

Hello medelec35
Well now it starts to work as I want.
Should tomorrow calibrate the sensor.
I will come and talk about how it goes.
Thanks for the help

Well I know that my drawing was not good.
Must do a better drawing next time
Curious about what you draw with

Foppa

Hello Ok've drawn a bit on my connection. Not the best but I hope you understand. And I have measure the output of the lm335 and the value 2.040 V and the display shows -69 And the formula for conversion is the "Temperature = ((Read_ADC * 10 / (1023/100) * 5) +5) / 10-280 " if this fails to work you...

Hello medelec35 First thanks for all your help. I tested the simple solution and then show the -54 in the room tempratur. I attach the file to lm335. The difficult solution I do not know how to get to because it requires them these symbols (()) and do not know how to incorporate them. I copied the d...

Ok have tried it now.
Did not that good.
The display shows the -297 C

What do
Foppa

Ok will try this tonight
I will come back and talk about how it goes.
Thanks for your help
Foppa

Hello everyone, I've fixed a small thermostat which I will measure cold. lm335 which does the job. But when I put it in the fridge so it does not indicate below zero. The show +16, not sure what it showed but they were not below freezing. tempratur true when measuring the room tempratur pic16f690 cr...

is it possible to add a decimal for display of temperature
as 21.6 ° C
Have a lm335 measuring

What type of capacitor should I have.
And what value will it have.
Should it be connected in series with LM50BIM3.

I see that you have changed a bit in Coden.
Should be fun to try this tonight
Many questions now.

I thank you for all the help.
Foppa.

hello medelec35 I tried this and it seems to show the right "Temperature = ADC value as int * 50 / 102 - 50" But the value of the display goes up and down. It goes from 25 down to 17 and up to 25 again. all the time. I have insert the 4.7kohm for pullup. I enclose my small test program. Perhaps you ...

No, it shows about 10 when the current temperature is 18. Have not had time to test this further. 'll Try to do it tonight. I have also another problem, it is that value is not fixed / stationary on my screen. Oscillate up and down. Do not know what to invent to this problem. But I'm going and try y...

Thanks to be fun to test.
John

you have some formula for this.
As I can take advantage of
John

I'm about to fix temp gauge.
I wonder what to do in order to display in Celsius.
instead of the value is 0 to 1023
the ADC is working with

PIC16F690
Kristal 4MHz
temp sensor LM50BIM3
John

Hello I did what you wrote. followed the link and I changed RA1 to RA0. I get the CRC ERROR on the display. google on crc error, but they reply I get does not solve my problem. Have also tried to change the "delay time of ds18s20" Without results. Should I find a ds1820. The I have now is ds18s20. c...

Hello

Are testing a DS18S20.
Can you have a custom macro in one wire
which is designed for ds1820

Chip is 16F628A

I had to make some changes in macrot so it suited for 16F628A
Is a little unsure if I made the right
It does not work