This question already has an answer here:
I have this ATK-SIM900A GSM / GPRS module which will be used to send sms. But I can't figure out how to interface it with an Arduino as there are no documentation available online.
ATK-SIM900A GSM/GPRS Board from Alientek
Things I've tried so far
I've tried connecting the module with Arduino in following manner
SIM900A TX <-> Arduino RX
SIM900A RX <-> Arduino TX
SIM900A GND <-> Arduino GND
I've powered up the ATK-SIM900A module with 12V-2A DC supply
- Tried SoftwareSerial library
- Tried a some GSM libraries and programs
What I'm doing wrong? Any kind of help will be much appreciated.
Why it isn't a duplicate of other questions:
I am working with ATK-SIM900A GSM / GPRS module, it has different features and pinout than the module asked in those questions. I've tried the solution stated in this question (Connecting GSM SIM900A module with Ardunio), it didn't work.