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hello
I want to send and receive sms through gsm modem. I am using avr 128. I am able to send messages but I am not getting how should I receive a message.
To read a message I need to send AT+CMGR=1. This will read the first message. But to read that I need to read response of this command...
Re: sensing continuously varying water level & displaying it on LCD.
Thank you jayanth.devarayanadurga :)
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Thank you :) Voltage i have applied is 5 volts!
oh yeah right. No its a normal sensor. I have taken 2 copper plates which i have fixed at the same distance. I have given supply to these plates. To these 2 copper plates i have attached wires(through which i am measuring current). i have fixed this unit to the bucket and started pouring water...
Hello Everyone,
I am doing one project. I have made one water level sensor which gives me output in current that varies from 0mA to 17mA approximately when watel level varies from 0 level to FULL level. Now after this i want to sense this level using 8051 and display this continuously varying...
hello,
In my project there are 2 parts 1) digital speedometer 2) speed monitoring (about which i told above)
I have prepared program of "digital speedometer" and "program to send a message". now I want to prepare a program which will send a message when speed is increased above particular...
Yes... i have done something like this,
CJNE A,#06H,GREATER //check if A is greater than 06. If equal then it will fall through
LJMP GET_THIRD // execute "get_third" routine only if it is equal
GREATER:JNC SEND_SMS // if they aren't equal then it will check for A>06...
Hello,
I want to prepare a assembly program which will compare more than 2 numbers. Actually i want to send a message to particular mobile number if speed exceeds more than say 6 km/hr
suppose that there are 3 digit numbers (till 999). now if speed exceeds above 6 km/hr then it should jump to...
oh i see :) yup i agree :)
Thank you tsea :) have a great day ahead :)
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yeah i do agree. but i have to take connections via rs232 port only. there is no other provision i.e. no headers are given.......
okay :smile: Thank you 8-)
one doubt again...
in proteus we connected Tx pin of microcontroller to Tx pin of modem, Rx pin of microcontroller to Rx pin of modem and GND to GND. but in hardware we connect like you said.. why? :???:
yep i have came to the same conclusion :-) i guess i have to connect MAX232 because i am connecting to RS232 connector of the modem.
By the way one doubt..
We both have implemented this on proteus but at that time we did not connect MAX232 in between micricontroller and Compim though it worked...
hello tsea,
Its ok, don't be sorry :).
I checked it on proteus and it is working well :)
now there's problem with HARDWARE it seems. Even i think the the same but i found other info on the net, which was posted by some other member. i am posting it here.
This suggests that i should use...
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