I have following requirements. Is it possible to achieve using SIM 800L.
- Send call to user by taking command from Tx Rx
- Receive call, detect DTMF and send to Tx Rx to arduino
- Send SMS
Also please suggest is it having onboard IO also. or any other alternatives.
If you have some video already with some project it will be helpful, as it is the cheapest one i feel.
Thanks