Instructables
video PIC16F84A Thermometer
This is simple thermometer with just few components.
The brain is PIC16F84A and sensor is DS18B20
Range of sensor is -55 to 125°C is possible if ONLY the sensor is in that area not the whole device!
The schematic and other stuf to make this thermometer you can find on my blog:

maco PIC Projects

is there an asm file of this with english comment?not other languages?coz i cant understand the program...

google translator works fine,shall I translate it for you?

I also made a handheld version of it with cr2032 cell,skipping the resistors of display to give them just enough charge.
DSCF1761.JPG
I made one too just like you'r one-
http://www.youtube.com/watch?v=G-pACEhACZw
DSCF1304.JPG
macobt (author)  Suraj Grewal1 year ago
Good job suraj.
thanks
What does those two arrows represent? General male contact
had a hard time figuring out russian schematic
those arrows are representing that those are connected to ic.
will upload a schematic soon
and also show pics of my version
abtrooper824 years ago
link on blog to HEX code does not work, please post here or provide a new link

Thanks 
macobt (author)  abtrooper824 years ago
 I check the link it's OK
http://www.pic16.nm.ru/site/thermometer/thermometer_soft.zip

This link does not work, can you email me the file.

Thanks
macobt (author)  abtrooper824 years ago
hello again
And here is other link to download the hex code

thankyou, you are most kind
macobt (author)  abtrooper824 years ago
 If you need any  help,just email me.
Regards
dimjan4 years ago
geoper24 years ago
he is probably multiplexing the two led displays
the thing is that this is not an instructable mate its just a video of how your project works ... so please provide with the steps ?/
banja7114 years ago
Where is the second LED display on schematics?
macobt (author)  banja7114 years ago
The thermometer in original schematis is with 4 segments,but I built it with 2 segments,other 2 show when thermometer is measuring below zero and other show half degree,example 26.0 or 26.5
banja711 macobt4 years ago
I understand that, but I can`t recognize second LED display on schematics... I see just one! How to wiring second?
macobt (author)  banja7114 years ago
Here is picture,I think I helped.

thermometer.gif
banja711 macobt4 years ago
Ok! I understand...  RB0-RB7 is a same for first and second number! RA0,RA1-Anode
I found DS 18B20+...Is it ok?

macobt (author)  banja7114 years ago
Yes,RA0 for first and RA1 for second number(anode)
And sensor is ok DS18B20
If you make post some pics.
Regards maco bt
alexev845 years ago
can i replace the thermic sensor used with a lm35 one with minimum modification?
macobt (author)  alexev845 years ago
I dont know about that, I am not profesional in programming,sorry
alexev84 macobt4 years ago
excuse my "complicated-preision" questions...i'm not very good at this...i need to ask you: are those led displays you use,common  anode or cathode ones?does it make any diference?mine's have a double common anode pins with op. voltage between 1.8-2.2V.and the second question is why did you used 15k resistor(alot of ohms) for the pic and the led displays....you use 5 volts for powering the pic...isn't that the actual op. voltage of the pic anyway?Thanxs in advance!
thermometer.gif
The ds18b20 uses Dallas' one wire protocol. To use a lm35 you just need a A/D converter which most uC's have.

Mike
uu thanks 
Dr. Pepper5 years ago
cool
dude join my group!!!!!!
dr.jpg
macobt (author)  Zaphod Beeblebrox5 years ago
What group??
Kiteman5 years ago
Looks good - how about posting the project over here (as an Instructable) as well as on your blog?