Description
Description
The TTGO T-Call ESP32 is an advanced IoT development platform that combines the powerful ESP32 with the integrated SIM800L for cellular communication. Designed for remote and off-grid IoT applications, it enables GSM/GPRS connectivity for data transmission, SMS messaging, and voice calls, while still supporting Wi-Fi and Bluetooth communication. The board includes onboard battery charging, voltage regulation, SIM card support, and access to multiple GPIO, ADC, DAC, PWM, UART, SPI, and IC interfaces. It is ideal for IoT systems that require internet access in locations without Wi-Fi coverage.
Features
- ESP32 dual-core processor with Wi-Fi and Bluetooth
- Integrated SIM800L GSM/GPRS module
- Supports SMS, voice calls, and cellular data
- Quad-band GSM support (850/900/1800/1900 MHz)
- Micro USB interface for programming and power
- Onboard battery charging and power management
- SIM card slot for mobile network access
- External antenna connector for improved signal reception
- Multiple GPIO pins for peripheral integration
- ADC, DAC, and PWM support
- Supports UART, SPI, and IC communication
- Compatible with Arduino IDE and Espressif SDK
- Boot and reset buttons onboard
- Suitable for remote IoT applications
Specifications
- Product Type: Cellular IoT Development Board
- Model: TTGO T-Call ESP32
- Core Processor: Dual-core 32-bit Tensilica LX6 MCU
- Wireless Module: ESP32
- Wi-Fi Standard: IEEE 802.11 b/g/n
- Bluetooth Support: Bluetooth Classic + BLE
- Cellular Module: SIM800L
- Cellular Bands: GSM 850 / 900 / 1800 / 1900 MHz
- Operating Voltage: 3.3V DC
- Input Voltage: 5V via Micro USB
- SIM Card Slot: Micro SIM
- GPIO Support: Multiple Digital I/O
- Analog Features: ADC, DAC, PWM
- Communication Interfaces: UART, SPI, IC, Wi-Fi, Bluetooth, GSM, GPRS
- Power Management: Onboard Battery Charging Circuit
- USB Interface: Micro USB
- Operating Temperature: -20C to +70C
- Dimensions: Approximately 70 40 mm
- Application: Cellular IoT and Remote Monitoring
Links
- 3D Model
- Official TTGO T-Call ESP32 SIM800L GitHub Repository
-
Publish Data to Cloud without Wi-Fi (TTGO T-Call ESP32 SIM800L)
Tutorials
- TTGO T-CALL : The Best IoT Board with multiple connectivity options | ESP32 Sim800L
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