hi! im eugene and im doing a proj. in my applied physics class. i
plan to interface a LM35 temp sensor from national semiconductor to a
microcontroller. in order to control the sensor a remote user will
issue commands in a cellular phone by way of SMS. the microcontroller
will be interfaced w/ a nokia 3310 that will act as its command
reciever and data transmitter to the remote user. the uC will acquire
the sms from the 3310, decode the sms, and perform the commands.
after performing the commands the uC will convert the data into sms,
then send it to the remote user using the 3310. is my proj. feasible?
if so what atmel microcontroller will i use? and lastly can anyone
share to me URL links or books on how to manipulate SMS messages?
thanks guys and more power!!!
nokia 3310 interfacing
Started by ●May 19, 2003
Reply by ●May 19, 20032003-05-19
> -----Original Message-----
> From: myemfaccount [mailto:myemfaccount@myem...]
> Sent: Monday, 19 May 2003 1:26 PM
> To: avrclub@avrc...
> Subject: [AVR club] nokia 3310 interfacing > hi! im eugene and im doing a proj. in my applied physics class. i
> plan to interface a LM35 temp sensor from national semiconductor to a
> microcontroller. in order to control the sensor a remote user will
> issue commands in a cellular phone by way of SMS. the microcontroller
> will be interfaced w/ a nokia 3310 that will act as its command
> reciever and data transmitter to the remote user. the uC will acquire
> the sms from the 3310, decode the sms, and perform the commands.
> after performing the commands the uC will convert the data into sms,
> then send it to the remote user using the 3310. is my proj. feasible?
> if so what atmel microcontroller will i use? and lastly can anyone
> share to me URL links or books on how to manipulate SMS messages?
> thanks guys and more power!!!
Easy, interfacing to an LM35 will need either a uC with internal ADC
(easiest) or an external ADC, I would go for an internal ADC unit, my
favourite small AVR ATM is the ATtiny 26, 20 pin, can run out to 16Mhz :o)
and has 11 ADC channels (single ended).
http://www.mcselec.com/an_124.htm
Is how to interface a nokia 5110 (I am sure the 3110 uses Fbus too)
Regards,
Kat.
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Reply by ●May 19, 20032003-05-19
Eugene,
For this project you would need a phone that supports AT commands
(Nokia 3310 does not), otherwise you will need to talk to phoneat a
low level using MBUS or FBUS protocol. Not easy.
With AT commands, it is very simple.
Check out http://www.mcselec.com/an_124.htm for information on FBUS
with AVR. (BASCOM code, protocol descriptions for Nokia 5110,6110,
3310 etc and C code for SMS send/receive)
http://www.mcselec.com/an_31.htm has Siemens phone, which uses AT
commands.
Allthough the above links use BASCOM, the code can be converted over
to C if needed.
Suggest using Mega128, for the SRAM available.
Lots of luck with your project. If you get it working, post a link
to your project.
Mark Voevodin --- In avrclub@avrc..., "myemfaccount" <myemfaccount@m...>
wrote:
> hi! im eugene and im doing a proj. in my applied physics class. i
> plan to interface a LM35 temp sensor from national semiconductor
to a
> microcontroller. in order to control the sensor a remote user will
> issue commands in a cellular phone by way of SMS. the
microcontroller
> will be interfaced w/ a nokia 3310 that will act as its command
> reciever and data transmitter to the remote user. the uC will
acquire
> the sms from the 3310, decode the sms, and perform the commands.
> after performing the commands the uC will convert the data into
sms,
> then send it to the remote user using the 3310. is my proj.
feasible?
> if so what atmel microcontroller will i use? and lastly can anyone
> share to me URL links or books on how to manipulate SMS messages?
> thanks guys and more power!!!
For this project you would need a phone that supports AT commands
(Nokia 3310 does not), otherwise you will need to talk to phoneat a
low level using MBUS or FBUS protocol. Not easy.
With AT commands, it is very simple.
Check out http://www.mcselec.com/an_124.htm for information on FBUS
with AVR. (BASCOM code, protocol descriptions for Nokia 5110,6110,
3310 etc and C code for SMS send/receive)
http://www.mcselec.com/an_31.htm has Siemens phone, which uses AT
commands.
Allthough the above links use BASCOM, the code can be converted over
to C if needed.
Suggest using Mega128, for the SRAM available.
Lots of luck with your project. If you get it working, post a link
to your project.
Mark Voevodin --- In avrclub@avrc..., "myemfaccount" <myemfaccount@m...>
wrote:
> hi! im eugene and im doing a proj. in my applied physics class. i
> plan to interface a LM35 temp sensor from national semiconductor
to a
> microcontroller. in order to control the sensor a remote user will
> issue commands in a cellular phone by way of SMS. the
microcontroller
> will be interfaced w/ a nokia 3310 that will act as its command
> reciever and data transmitter to the remote user. the uC will
acquire
> the sms from the 3310, decode the sms, and perform the commands.
> after performing the commands the uC will convert the data into
sms,
> then send it to the remote user using the 3310. is my proj.
feasible?
> if so what atmel microcontroller will i use? and lastly can anyone
> share to me URL links or books on how to manipulate SMS messages?
> thanks guys and more power!!!
