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hello
when I use sim900a in my project after 1 day sim900a missing the network and do not receiving the sms, I tried to solved this problem with at+creg at command
when I turn sim900a it show +creg: 0,1 and I check this at command any 10 min but sim900 after 1 day do not receive sms ,,,
which...
hello to all
i want to mesure the blood shugar with avr microcontroller ...
what is the best sensor for it?or whats the output of this sensors?
can you intruduse me some sensor?or give me datasheet of this sensor?
tnx all.
i worked with avr microcontroller and codevision compler
as you say my code is similar to :
/*******************************************************
AVR Core external Clock frequency: 11.059200 MHz
*******************************************************/
#include <mega16a.h>
#include <alcd.h>...
hello
i want to receive sms via sim900a with atmega 32
whats at command need to recieving sms?
is this correct?
AT+CMGF=1\r
AT+CMGDA=”DEL ALL”
AT+CNMI=0,0
AT+CMGR=1
AT+CMGL=”REC UNREAD”
tnx freinds
hello all
i wanna to connect sht11 with long cable to atmega32
when the length of cable is less than 30 cm the micro show the data on lcd and the data is correct
when i try to connect sensor with a cable =1 meter to micro didnt show anythings on lcd!!!
how can i increace the distance bitween...
hello to all ...
I simulate a graphic lcd 64*128 in proteus
and program the micro with codevision avr and atmega64
but just show some point!
did you know whats the wrong?
tnx from your good site
the schematic and code is here
#include <mega16.h>
#include <glcd.h>
#include <font5x7.h>
void...
yes thats right
when i connect sim900 to atmega16 and sent CRLF(CRLF means enter) after each command,the sms sent
my code is here
printf("AT");
putchar(enter);
delay_ms(1500);
printf("AT");
putchar(enter);
delay_ms(1500);
printf("AT")...
tnx for your helping
i connect the sim900 to pc with ft232 as you said and with hyper terminal first just i could get thise strings
but when in hyper terminal i want to send at command to sim900, doesnt sent any thing or sim900 doesnt sent anything... :(
i see the output in lcd
i try to use hyper terminal with ft232rl but my ft232 dont work my schematic of ft is here
https://obrazki.elektroda.pl/8929117900_1428578608.png
and i change the ft and again doesnt worked
hello all :-)
I am new to this forum and this is my first post
I am using Sim900 for sending and receiving SMS with avr microcontroller atmega16
i programm this code thats write with codvision compilar
but this doesnt work :bang:
i dont know where is wrong,can u help me?
tnx all...
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