i am in one trouble and need quick solution.
when i am connecting my GSM sim900 with arduino then in serial monitor it shows the error and it shows
'Starting modem test...ERROR, no modem answer.
Checking IMEI...Error: Could not get IMEI'
i have connected Tx pin of GSM with Tx1 pin(pin no.18) of arduino and Rx pin of GSM with Rx1 pin (pin no. 19). please give suggestions as fast as possible. Also guide me for the connections if i have done the wrong connection.