Hi,
I am hoping to get some help. I am working with the uno and icomsat v1.1. I used the icomsat as a shield to the uno and connected directly to my laptop. I used the libraries from competefornothing.
When I ran the serial monitor, it says :
GSM Shield testing.
ERROR: SIM900 doesn't answer. Check power and serial pins in GSM.cpp
status=IDLE
Could I get some advice on this please?
Thank you...