TTGO T-Call ESP32 Development Board, SIM800L GPRS

The TTGO T-Call ESP32 is a development board combining the ESP32 dual-core microcontroller with the SIM800L GPRS module for cellular communication. It supports GSM and GPRS connectivity for data transmission, SMS, and voice applications. The board provides USB connectivity for programming, onboard power management, and access to GPIO, ADC, DAC, and UART interfaces. It is compatible with Arduino IDE and Espressif SDK, making it suitable for IoT systems requiring cellular communication without Wi-Fi. Typical applications include remote monitoring, tracking devices, and industrial IoT nodes.

• ESP32 SoC: Dual-core 32-bit Tensilica processor with Wi-Fi and Bluetooth

• SIM800L GPRS Module: Supports GSM and GPRS cellular communication

• Cellular Functions: Data transmission, SMS, and voice call support

• USB Interface: USB connection for programming and serial communication

• Power Management: On-board battery charging and voltage regulation

• GPIO Access: Multiple digital I/O pins with ADC, DAC, and PWM support

• Communication Interfaces: UART, SPI, and I²C supported

• Development Ready: Boot and reset buttons, SIM card slot, antenna connector

• Product Type | Function: ESP32 cellular development board with GPRS

• Processor | Core: Dual-core 32-bit Tensilica LX6 MCU

• Cellular Module | Type: SIM800L GSM/GPRS

• Operating Voltage | Supply: 3.3 V DC regulated output, 5 V via USB input

• Cellular Bands | Frequency: GSM 850 / 900 / 1800 / 1900 MHz

• GPIO, ADC & DAC | Pins: Multiple digital I/O, ADC, DAC, PWM

• Communication Interfaces | Protocols: UART, SPI, I²C, Wi-Fi, Bluetooth, GSM, GPRS

• USB Interface | Connector: Micro USB for power and programming

• SIM Interface | Slot: Micro SIM card

• Operating Temperature | Range: −20 to +70 °C

• Dimensions | Size: Approximately 70 × 40 mm

• 3D Model
• Official TTGO T-Call ESP32 SIM800L GitHub Repository

• Publish Data to Cloud without Wi-Fi (TTGO T-Call ESP32 SIM800L)