Thank you sir.
Sir, I just need the circuit connections for SIM900 module to interpret my sms commands (AT
Command concept) like if I send ‘1’ via sms, it would send an ON or HIGH SIGNAL, and if I send
‘0’ it would send an OFF or LOW SIGNAL. I cannot get how to make the circuit so as to make the
SIM900 interpret the SMS commands so as to send HIGH or LOW signal to the AVR microcontroller.
I am stressing on AVR because I already have an AVR development board. But you may suggest
help with 8051.
I am not having any problem with programming or AVR. My problem is how to make my sim900
interpret the sms commands and send HIGH or LOW SIGNALS accordingly to AVR. Rest is okay for
me.
My robot shall move according to the sms I send. It’s steering is based on Differential drive.
It has 4 motors (2 on each side parallely connected). The robot will perform the following
action based on sms sent. The SMS shall be a 2-digit no. consisting of only ‘0’ or ‘1’. The
1st digit controls 4 left side & 2nd digit controls right side.
SMS ACTION
11 FORWARD
01 LEFT
10 RIGHT
00 STOP
‘1’ should send a high signal and ‘0’ should send a low signal so that AVR Atmega 16 can
prepare the output acc to HIGH/LOW signal and send it to L293D IC.
Thank You Sir very much.
Soubhik.