Hi all,
I bought some esp32 boards
and I would like to try to add a GSM module to make calls on the phone.
Can you advise me what models to buy?
I don't understand what to buy that will be fine.
800/900 or other
Thank you

 

If you want to make and receive voice calls with the SIM900 you will need a module that includes the audio hardware. I know there is one for the Arduino in shield form, but I don't know if there is a generic one.

Look for a couple of audio jacks for mic and speaker. Also, make sure there is a supported ESP32 compatible library.

 

Hi Yaakov,
I meant calls only at the ringing level, as well as sending sms.. not speaking
sorry for my english..

so i understood that a sim900 can be good for esp32


thanks

 

Hi Yaakov,
I meant calls only at the ringing level, as well as sending sms.. not speaking
sorry for my english..

so i understood that a sim900 can be good for esp32


thanks

The device can send a ring notification on the serial line, and receive SMS. It will work with the ESP32, just choose a good library.

 

thanks