Hi everyone !
I have some question concerning my high school project ,i'm a french student so please , be forgiving to my English ...
In m'y project , i use a GSM Shield plugged on the usart (tx) pin of an Arduino uno card , to send a data frame like this ("@,pressure_mesure,Temperature_mesure,vibration_mesure*") to a smartphone . I receive the data frame by the (rx) usart of the card and i don't know how to transmit them with the arduino base program to send a sms with a GSM Shield .
I Hope that i have well explained my probleme in english ^^