I want to use Bolt Iot and my sim800 gsm modem only, to send sms using AT commands (no APIs like Twilio). I don’t want any microcontroller/processor in my project. How do i do it? What language should I code in?
Without using Bolt API, this is not possible. You will have to use some sort of a computer (desktop or droplet) to run the python code which will use the Bolt API to send AT commands to the SIM800.
Have you already tried sending an SMS by connecting to the SIM800 using the Arduino Terminal?
Do you know what AT commands have to be sent to the modem for it to send out an SMS?