I bought some esp32 boards (from azdeliv....)
and I would like to try to add a GSM module to make calls on the phone.
Can you advise me what and where to get them?
I don't understand what to buy that will be fine.
Espressif Systems is a fabless semiconductor company providing cutting-edge low power WiFi SoCs and wireless solutions for wireless communications and Internet of Things applications. ESP8266EX and ESP32 are some of our products.