Temperature Register

[mabauti]

I want to start making a temperature register with these specifications:


* Temperature range -10 celsius to 50 celsius
* register a Temperature sample every 10 minutes during 2 weeks and then send the stored samples to a PC in order to organize, massive storing and present the data
* Using a Pic 16F84 or a similar PIC


has been this project already made?

I'll appreciate your comments gentlemen.

 

[dknguyen]

How do you plan to send the samples to PC? Wirelessly? Or someone to come and retrieve the dat?

 

[Russlk]

I am a newbe to PICs but I don't think the 16F84 has room to store 2016 bytes of data.

 

[mabauti]

How do you plan to send the samples to PC? Wirelessly? Or someone to come and retrieve the dat?

serial port interfacing (may be someone can clarify this to me)

I am a newbe to PICs but I don't think the 16F84 has room to store 2016 bytes of data.

I'm planning to use an external ram/eeprom

I'll ask again : has been this project already made?

 

[dknguyen]

If you mean in the world, yes they are called data recorders and such used by weather-tracking people in the field.

If you mean by anyone here, not that I know of, but proably many similar things have been built.

 

[Nigel Goodwin]

serial port interfacing (may be someone can clarify this to me)


I'm planning to use an external ram/eeprom

I'll ask again : has been this project already made?

Yes, it's a VERY common application, and quite simple to do, you may find my tutorials helpful - depending how you plan measuring the temperature (I don't have any specific temperature tutorial).

Standard method for a data recorder would be to read analogue inputs (covered in tutorials), store it in EEPROM (covered in tutorials), and then transfer it via RS2s2 (covered in tutorials). If you use a thermistor them you just need to convert it to a suitable analogue voltage - however, there are some VERY nice LM series IC's, one gives an analogue output, so many mV per degree, and linear! - another gives a direct digital readout of the temperature.

 

[mabauti]

Ok, I'll do a reading of those tutorials . Thx Nigel

 

[mramos1]

Mabauti,

See the joystick tutorial as well for reading the termistor. Works well. Of course you will need to setup the serial port and write a routine to dump the byte out to your PC program.