LilyGO TTGO T-Call ESP32 - with SIM800L - AXP192

The TTGO T-Call from LilyGO is a microcontroller based on an ESP32 in combination with an SIM800L GSM GPRS module. The USB to serial converter makes it easy to program, even as an Arduino. The board has a USB-C connection with which it can be programmed and/or powered (USB-C cable not included).

Specifications:

• Supply voltage: 5V DC (via USB-C or 5V pin) of 3.3V DC (via 3V3 pin)
• GPIO voltage: 3.3V*
• Main chip: ESP32 (WROVER module, 240Mhz dual core processor)
  • Flash memory: 4MB
  • SRAM: 520 kB
  • PSRAM: 8MB
  • Built-in Wi-Fi
  • Built-in Bluetooth
• USB to serial converter: CP2104 or CH9102F (drivers)
• Built-in SIM800L GSM GPRS module
• Built-in Nano SIM card connection
• Built-in power management chip (AXP192) with Li-ion/Li-Po battery charging circuit (~500mA charging current)
• Battery connector: 2p JST-PH
• Dimensions: See images

Package contents:

• 1x TTGO T-Call SIM800L
• 1x Male header set
• 1x Battery cable
• 1x Antenna with cable

See the following page to get started with the board: TTGO-T-Call-ESP32

To program the board with the Arduino IDE select the 'ESP32 Wrover Module' in the board manager.

*Note: The pins on the board are directly connected to the ESP32 chip and are therefore only suitable for 3.3V signals.