How to compile with Arduino IDE

1. Open sketch file slider.ino
2. Open Preferences menu (File->Preferences)
3. In Additional boards manager URLs, paste this:

   https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json
   https://raw.githubusercontent.com/ricardoquesada/esp32-arduino-lib-builder/master/bluepad32_files/package_esp32_bluepad32_index.json
   

   
4. In Tools->Board choose esp32_bluepad32->ESP32-WROOM-DA Module
5. Compile with Sketch->Verify/Compile