TTGO T-Call V1.3 ESP32 with SIM800L module

The TTGO T-Call V1.3 is a development board that integrates the powerful ESP32 microcontroller with the SIM800L GSM/GPRS module, allowing for both WiFi/Bluetooth and GSM/GPRS connectivity. This combination makes it ideal for IoT projects requiring remote communication, such as GPS trackers, remote sensors, and other applications that need to send data over the cellular network.

Key Features:

• Microcontroller: ESP32 with dual-core processor, integrated WiFi, and Bluetooth.
• GSM/GPRS Module: SIM800L, capable of GSM and GPRS communication.
• Power Management: Onboard battery charging and power management for standalone operation.
• SIM Card Slot: Supports standard SIM cards for cellular connectivity.
• External Antenna: Connector for an external antenna to enhance GSM signal strength.
• GPIO Pins: Multiple GPIO pins available for sensors and actuators.
• Micro USB Port: For programming and power supply.
• Deep Sleep Mode: Low power consumption for battery-operated applications.

Technical Specifications:

• Microcontroller: ESP32
  • CPU: Dual-core 32-bit LX6 microprocessor
  • Clock Speed: Up to 240MHz
  • Flash Memory: 4MB
  • SRAM: 520KB
  • Connectivity: WiFi 802.11 b/g/n, Bluetooth v4.2 BR/EDR and BLE
• GSM/GPRS Module: SIM800L
  • Frequency Bands: GSM 850/900/1800/1900MHz
  • Data Transmission: GPRS multi-slot class 12, up to 85.6 kbps
  • SIM Card Interface: 1.8V/3V SIM card
• Power Supply:
  • Input Voltage: 5V via micro USB
  • Battery Connector: JST connector for lithium polymer batteries
  • Charging Circuit: Integrated battery charging (1A)
• Interfaces:
  • GPIO: 17 GPIO pins
  • ADC: 8 channels
  • DAC: 2 channels
  • UART/SPI/I2C: Available for peripheral communication
• Other Features:
  • Dimensions: Compact size for easy integration into projects
  • Operating Temperature: -40°C to 85°C

Applications:

• IoT Devices: Ideal for creating IoT applications that require both WiFi and GSM connectivity.
• Remote Monitoring: Suitable for remote sensors and monitoring systems in areas without WiFi coverage.
• GPS Tracking: Can be used in GPS tracking systems with cellular communication.
• Home Automation: Integrate into smart home projects for remote control and monitoring.
• Industrial Automation: Use in industrial environments for remote data acquisition and control.

Datasheet: For detailed technical information, refer to the TTGO T-Call V1.3 ESP32 with SIM800L Module datasheet.