I recently bought the Arduino Uno. I've had fun doing completing the examples.
Next, I bought the Sim900 GSM shield from Geetech
What do I eventually want to do? Send a text to myself when a sensor is tripped.
Before figuring out that piece, I need the GSM Shield to work! I went out and bought a prepaid phone, and stole the SIMCARD from that before making sure the simcard was activated and working, which it is.
What I've tried:
- Attaching the Sim900 shield to the UNO as you see in the photo below, while supplying external power and the USB cable to the UNO. I then used some of the "example" code in the IDE to send SMS.
What I see in the monitor "SMS Messages Sender" and NOTHING happens even after waiting for 5 minutes. I don't get a not connected, or any error prints or anything. Just says that and does nothing.
- I tried uncoupling the GSM to the Arduino and trying to connect via cables, and then using the same code. This resulted in the same problem.
I also tried following a couple other guides. In all cases the red light on the GSM is stable and a green light is blinking, which by the geetech guide makes me think the "sim900 has not registered to a network"
Any ideas? Is it a problem that I attached a sim which already has it's own IMEI and phone number? If I put in a valid sim (which I did) attach the gsm to the uno (done) and use separate power for both, it should be working. But it's just not responding.
Gear: Arduino Uno
Sim: Tracphone sim card
GSM: geetech sim900
