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Code-It-Yourself

Use a T-Call SIM800L ESP32 board and flash firmware.

Required Components

Part Description Buy
T-Call SIM800L ESP32 WiFi-enabled microcontroller with SIM800L Shopee
SIM Card with Load Inserted into T-Call

Required Software

Install ESP32 board support (Boards Manager URL):
https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json

Upload Firmware

  1. Open Arduino IDE
  2. Load the Taratxt firmware sketch
  3. Modify the following lines in the code:
const char *ssid = "YOUR_WIFI_SSID"; // Replace with your Wi-Fi SSID
const char *password = "YOUR_WIFI_PASSWORD"; // Replace with your Wi-Fi password

const char *serverName = "https://taratxt.com/api/"; // Replace with your server URL

const char *deviceKey = "YOUR_DEVICE_KEY"; // Replace with your device key

const char *token = "YOUR_API_TOKEN"; // Replace with your token
  1. Go to Tools > Board and select ESP32 Dev Module
  2. Connect your ESP32 to your computer via USB
  3. Select the correct port from Tools > Port
  4. Click Upload to flash the firmware onto your ESP32

Final Steps

  • Once connected, your device will appear as Online in your Taratxt Dashboard.
  • Use the platform to send/receive SMS and monitor activity.
  • To test incoming webhooks, use SnapWebhook to inspect payloads in real-time.