Hi,
I am working on project in which i am trying to send message with the help of SIM900 gsm modem.
i followed procedure as per mentioned link and working fine.
when i trying with standalone arduino its not working any how.
let me guide, am i missing something?
my standalone arduino tested with blink led and working fine. see attached image of my standalone arduino.
Anyone ?
no reply?
Where is the pull-up resistor on the reset pin?
its not working
Sorry, that is not a valid way of describing an issue. Try again.
Oh,,
i have connected resistor at back side,
not working means,
i am not getting any message/output by stand alone atduino.
other examples are working perfectly.
How are you powering the GSM modem ?
by 12v adopter.
GSM modem working perfectly with arduino board.
chetan0412:
by 12v adApter.GSM modem working perfectly with arduino board.
How are your programming your Stand-alone Arduino ?
From here ..
i made on pcb, please have look on arduino image(in my first post)
If You can program the Arduino just fine, i cannot figure out why the serial connection for the Modem isn't working, sorry ...
ok..
grounds connected?
Yes Dear,
Ground connected
