What you need:

Heltec WiFi Kit 32 V3 (ESP32-S3 with onboard OLED)

Your Bitaxe miner running on your local network

Arduino IDE with following librarys:

• Heltec ESP32 Dev-Boards library

• ArduinoJson library

• Esp32 by Espressif Systems !!!3.1.3!!!

1. Install the Required Libraries and Board Support

   • In Arduino IDE, go to Tools > Manage Libraries > and search for "Heltec ESP32 Dev-Boards and install.

   • select Heltec WiFi Kit 32 V3 aus your Board and choose the right Port

   • Install the ArduinoJson library via Tools > Manage Libraries.

   • Install the ESP32 library by Espressif Systems VERSION !!3.1.3!! via Tools > Manage Boards

   • Make sure you’re using the HT_SSD1306Wire library that comes with the Heltec package (not Adafruit/ThingPulse).

2. Connect Your Heltec Board

   • Plug the Heltec WiFi Kit 32 V3 into your computer via USB.

3. Configure Your WiFi and Bitaxe API Endpoint

   • Note your WiFi SSID and password.

   • Find your Bitaxe’s IP address (e.g., 192.168.178.32).

   • The API endpoint for stats is usually: http://Bitaxe-IP/api/system/info

4. Upload the Code

   • Open the provided Arduino sketch or Code (from this GitHub) into the Arduino IDE.

   • Fill in your WiFi credentials and Bitaxe IP.

   • Make sure you selected the correct board and COM port.

   • Upload the code.

5. What Happens Next

   • The Heltec connects to your WiFi.

   • Every few seconds, it fetches stats from your Bitaxe miner via the API.

   • The OLED screen shows your hashrate, accepted shares, best diff, and session diff.

6. Troubleshooting

   • If the display stays blank, double-check you are using the right library and board selection.

   • Open the Arduino Serial Monitor (115200 baud) for debug messages.

   • Make sure your Bitaxe API is reachable from the ESP32 (test the URL in your browser).