TTGO T-Call V1.3 ESP32 Wireless Module GPRS Antenna SIM Card SIM800L Module
Are you stuck with your project because of the limited WiFi range of ESP8266 or ESP32 or do want to place your project on a remote location, don’t worry here comes ESP32 With Onboard SIM800L. Now use a sim card with ESP32 for GPRS !!!
Hardware Specifications
| Chipset | ESPRESSIF-ESP32 240MHz Xtensa® single-/dual-core 32-bit LX6 microprocessor |
|---|---|
| FLASH | QSPI flash 4MB / PSRAM 8MB |
| SRAM | 520 kB SRAM |
| Button | Reset |
| USB to TTL | CP2104 |
| Modular interface | UART、SPI、SDIO、I2C、LED PWM、TV PWM、I2S、IRGPIO、capacitor touch sensor、ADC、DACLNA pre-amplifier |
| On-board clock | 40MHz crystal oscillator |
| Working voltage | 2.7V-3.6V |
| Working current | About 70mA |
| Sleep current | About 300uA |
| SIM card | Nano SIM card |
| Working temperature | -40℃ ~ +85℃ |
| Size&Weight | 78.83mm*28.92mm*8.06mm(11.77g) |
Power Supply Specifications
| Power Supply USB | 5V/1A |
|---|---|
| Charging current | 500mA |
| Battery | 3.7V lithium battery |
| JST Connector | 2Pin 1.25mm |
| USB | Type-C |
Wi-Fi
| Standard | FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC |
|---|---|
| Protocol | 802.11 b/g/n(802.11n，speed up to150Mbps)A-MPDU and A-MSDU polymerization，support 0.4μS Protection interval |
| Frequency range | 2.4GHz~2.5GHz(2400M~2483.5M) |
| Transmit Power | 22dBm |
| Communication distance | 300m |
Bluetooth
| Protocol | Bluetooth v4.2BR/EDR and BLE standard |
|---|---|
| Radio frequency | with -97dBm sensitivity NZIF receiver Class-1,Class-2&Class-3 emitter AFH |
| Audio frequency | CVSD&SBC audio frequency |
Software specification
| Wi-Fi Mode | Station/SoftAP/SoftAP+Station/P2P |
|---|---|
| Security mechanism | WPA/WPA2/WPA2-Enterprise/WPS |
| Firmware upgrade | UART download/OTA（Through network/host to download and write firmware） |
| Software Development | Support cloud server development /SDK for user firmware development |
| Networking protocol | IPv4、IPv6、SSL、TCP/UDP/HTTP/FTP/MQTT |
| User Configuration | AT + Instruction set, cloud server, android/ios app |
| OS | FreeRTOS |
T-Call V1.3 Pin Diagram
T-Call V1.3 Size Chart
Library for Arduino
Download SIM800L library for Arduino from GitHub
ESP32 with SIM800L + esp32-cam facial recognition + SMS active relay + fingerprint + blynk
only activate relay when two conditions are accepted (fingerprint + facial recognition)
some code integrating all ???
No, I haven’t done such a thing yet. ill let you know if I find something like that or if I happen to do something like that.