Help me make a digital temperature for a project with AT8951

newbie in mcu

Dear all..,

i'm really new in this field ., i want make digital temperature for my 1st project ..,
i want to use at8951 .., where i have to start ? can u give me some url ?

best regards
wildan

Re: newbie in mcu

HI wildan-maulana
try this link:
www.8052.com
it is a good site for 8051 MCU
and there are alot of ebooks in this site about 8051.

Regards

TheSniper (+)

Re: newbie in mcu

i recommend this site for you.

www.8052.com
also see this book: "the 8051 microcontroller and embedded systems" by ali mazidi.
you can find there a practical thermometer there.
a good book for start.

Re: newbie in mcu

Look here:
http://www.atmel.com/dyn/resources/prod_documents/DOC0597.PDF
and for software:
http://www.atmel.com/dyn/resources/prod_documents/ASMPROC.EXE

The system presented in this application note implements a simple digital thermometer that includes a built-in LCD and RS-485 communication port.
It is designed around Atmel’s AT89C2051 processor, a DS1620 digital thermometer
thermostat from Dallas Semiconductor, a small 8 X 2 LED backlit LCD, and
an RS485 line interface.

You can use any microcontroller from 8051 series instead specific AT89C2051 used in this application.

If the DS1620 it's an issue you can use a more common LM335 temperature sensor.
This is little device that outputs the current temperature in volts, with 10mV per degree Kelvin.
The temperature displays the ambient temperature on a 2 digit display, and also sends the temperature down the serial link once a minute for a computer to log or monitor.
In order to save on components, instead of putting in an ADC, the analogue comparator in the microcontroller AT89C2051 is used to determine the voltage. This is done by charging up a known (fairly accurate) capacitor and determining how long it takes while discharging to get to the same voltage as the sensor.
The time is measured accureately by using one of the timers in the processor.

For a complete project look here:
**broken link removed**

Re: newbie in mcu

hello
I have tested MC's
Atmel AVR,PIC and 8051
I suggest yiou to use the PIC one
I think that sooner or later , you will need to switch to it
If so, I could support you heavily

thanks

Re: newbie in mcu

haytham said:

hello
I suggest yiou to use the PIC one
I think that sooner or later , you will need to switch to it

thanks

Click to expand...

Why are you so sure he will switch sooner or later to PIC ?

Re: newbie in mcu

thnks for your help guys .., it's really2 help.
i'll try to build my 1st project now.

regards
wildan

Re: newbie in mcu

if you have a limited budget then go to at89sxxxx
since they can be programmed in circuit with a simple parallel port programmer that i s avialable at atmel web site in 8051 derivatives application notes

Re: newbie in mcu

hai

go for pic microcontrollers
because it is easy to learn and do the projects
for further help send me a pm

Re: newbie in mcu

wildan-maulana said:

Dear all..,

i'm really new in this field ., i want make digital temperature for my 1st project ..,
i want to use at8951 .., where i have to start ? can u give me some url ?

best regards
wildan

Click to expand...

Nice beginner project, just get am ADC 0831, an LM35 Ic, study their datasheets, and there you can create your first micro project.