ESP32 SIM800L GSM Module
he TTGO T-Call is a new ESP32 development board that combines a SIM800L GSM/GPRS module. The new board combines ESP32 WiFi & Bluetooth WiSoC with SIMCom SIM800L GPRS module, and also happens to rely on a USB-C port for power and programming instead of the more common micro USB port on this type of hardware. It can also be a standalone board with a built-in battery charging that supports up to 500mA.
Besides Wi-Fi and Bluetooth, you can communicate with this ESP32 board using SMS or phone calls and you can connect it to the internet using your SIM card data plan. This is great for IoT projects that don’t have access to a nearby router.
- ESP32 chip (WROVER module) (240Mhz dual core processor)
- Built-in Wi-Fi
- Built-in Bluetooth
- Built-in SIM800L GSM GPRS module
- Built-in power management chip (IP5306) with Li-ion/Li-Po battery charging circuit (charge up to ~2A)
- Built-in micro Nano Sim card connection
- Battery connector: 2p Molex Picoblade
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Chipset ESPRESSIF-ESP32 240MHz Xtensa® dual-core 32-bit LX6 microprocessor FLASH QSPI flash 4MB / PSRAM 8MB SRAM 520 kB SRAM Button Reset USB to TTL CP2104 Modular interface UART, SPI, SDIO, I2C, LED PWM, TV PWM, I2S, IRGPIO, capacitor touch sensor, ADC, DACLNA pre-amplifier On-board clock 40MHz crystal oscillator Working voltage 2.7V-3.6V Working current About 70mA Sleep current About 300uA SIM card Only supports Nano SIM card Working temperature range -40℃ ~ +85℃ Size&Weight 78.83mm*28.92mm*8.06mm(11.77g)
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