I would like to send a message from my shield to my mobile. i had tried 2 examples code from 2 different libraries. Currently i’m using Arduino Uno Rev3 and Icomsat v1.1 sim900. i had compile the coding and i din’t get any error for the coding, but i DID NOT received any sms from gsm. Anyone know why i could not received message?
The steps i did:
- stack icomsat v1.1 onto Arduino Uno Rev3. Connect antenna, USB and 12V/1.2A power adapter. Insert SIM card(Empty message inbox, $5 inside)
- switch the button on gsm shield to UART_Port, TxD on pin2, RxD on pin3.
- PWR light is red, Status light is yellow and Net light is blinking yellow.
- Change the country code and phone number in the coding. Upload and compile the coding with Arduino 1.0.3.
- Done compiling without coding error.
libraries 1: https://code.google.com/p/gsm-shield-arduino/
Result from SerialMonitor:
GSM Shield testing.
status=READY
SMS sent OK
libraries 2: GitHub - jgarland79/GSM_Shield: GSM Library for the SIM900 chip and the GBoard Arduino GSM development board
Result from SerialMonitor:
system startup
no call
Command: s
Check_Protocol
Send SMS to +60168908871
SMS ERROR