Hi, I'm using a sim808 v3.2 shield with an arduino MEGA
The connections are:
10 -> TX
11->RX
GND -> GND
with an external power supply in the SIM808 (9v nominal but I check it and it's 7.8v, no Li-ion).
I'm using DFRobot library and SoftwareSerial.
Sometimes after connection sim808 to mega, I turn on thr module, leds blink for few seconds and after turn off both.
Now, it always happens so I can't work..
This happens even if it is not connetted to Mega.
I searched on the internet but I don't find nothing useful.
Someone can help me?
The Arduino Mega has four serial ports: Serial on pins 0 (RX) and 1 (TX), Serial1 on pins 19 (RX) and 18 (TX), Serial2 on pins 17 (RX) and 16 (TX), Serial3 on pins 15 (RX) and 14 (TX).
There is no need to use SoftwareSerial.
.
ieee488:
The Arduino Mega has four serial ports: Serial on pins 0 (RX) and 1 (TX), Serial1 on pins 19 (RX) and 18 (TX), Serial2 on pins 17 (RX) and 16 (TX), Serial3 on pins 15 (RX) and 14 (TX).There is no need to use SoftwareSerial.
.
In every sketch I found there is..
Thanks anyway, I suppose my problem goes beyond the included library, so I thank you but I would like to understand the main problem! 