Enable serial interface and configure baud rates. Each serial interface is usually a TTL serial port on the microcontroller which may be connected directly to another device. That other device may provide a USB port, or WiFi (SWS), or Bluetooth, etc.
Change this setting by editing Config.h then compile and upload using the Arduino IDE.
- Default Value: 9600
- Other Values: 9600,19200,57600,115200
- Notes: The primary interface SERIAL_A usually the same USB virtual serial port used to upload the OnStep Arduino Sketch and is also used for USB PC connections (for ASCOM for instance.)
- This should almost never be changed.