Description
The TTGO T-Call V1.3 is a versatile development board that combines the powerful ESP32 microcontroller with the SIM800L GSM/GPRS module, enabling both WiFi/Bluetooth and cellular connectivity. This board is perfect for IoT applications that require remote communication, including GPS trackers, remote sensors, and devices that need to transmit data over GSM networks. With integrated battery management and a compact design, it is ideal for standalone and mobile projects.
Key Features
- Microcontroller: ESP32 with dual-core 32-bit processor, integrated WiFi and Bluetooth
- GSM/GPRS Module: SIM800L for GSM and GPRS communication
- Power Management: Onboard battery charging and management for portable operation
- SIM Card Slot: Supports standard SIM cards for cellular connectivity
- External Antenna Connector: Enhances GSM signal reception
- GPIO Pins: Multiple pins available for sensors, actuators, and peripherals
- Micro USB Port: For programming and power supply
- Deep Sleep Mode: Low-power operation for battery-powered applications
Specification
- Microcontroller: ESP32, Dual-core 32-bit LX6
- Clock Speed: Up to 240 MHz
- Flash Memory: 4 MB
- SRAM: 520 KB
- Connectivity: WiFi 802.11 b/g/n, Bluetooth v4.2 BR/EDR & BLE
- GSM/GPRS Module: SIM800L
- Frequency Bands: GSM 850/900/1800/1900 MHz
- 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 LiPo batteries
- Integrated Charging Circuit: 1A charging
- Interfaces:
- GPIO: 17 pins
- ADC: 8 channels
- DAC: 2 channels
- UART / SPI / I2C: Available for peripheral communication
- Dimensions: Compact design for easy project integration
- Operating Temperature: -40°C to 85°C
Application
- IoT devices requiring both WiFi and GSM connectivity
- Remote monitoring systems and sensors in areas without WiFi coverage
- GPS tracking systems using cellular communication
- Smart home and home automation projects
- Industrial automation and remote data acquisition
Datasheet: For detailed technical information, refer to the TTGO T-Call V1.3 ESP32 with SIM800L Module datasheet.