The SIM800L module enables communication via the GSM mobile phone network. In addition to SMS and the internet, voice calls are also supported, provided the speaker output and microphone input are brought out as pins. There are various modules for microcontroller tinkering. Among others, there is also an add-on for the Arduino Uno. The SIM808 and SIM900 modules are similar to the 800L and can usually be controlled with the same library.
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The TTGO T-Call 1.3 is an ESP32 module that offers GSM access using the SIM800L chip. I tested the module with a ThingsMobile SIM card. Facts: ESP32 and SIM800L chip, Micro-SIM slot, Antenna connector, Reset button, Connector for a battery, USB 3.1 Type C connector. Pinout. Areas of application: GPS Tracker (Requires GPS module), Smart…
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From time to time, I think about starting a mobile project. Usually, I've lacked a use case, the time, and an inexpensive provider for this. Recently, I acquired a Things Mobile SIM card from AZ-Delivery for a grand total of €0. I'm using this first SIM card and its provider as a reason to lay the foundation for projects involving…
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