Reference
Last revision 2026/01/12
This article provides essential guidance on the RoMeo v2's analog sensor port pin mapping, offering safety tips to prevent device damage, and instructions for using the Arduino IDE correctly, focusing on effective communication setup with connected devices.
Other Supplementary Information
The analog sensor port pin mapping on RoMeo v2 is different from the version before. Be careful to wire your sensor or other devices correctly or the wrong power connection would destroy your device.
Please Turn OFF the Motor Power Switch when debugging Romeo through USB cable. Or the external power supply(>12V) will destroy your Romeo.
Please select Leonardo board when uploading a sketch by Arduino IDE.
Serial port 0 or 1 Read more from Arduino.cc: Please use Serial1.***() instead of Serial.***() in code to communicate with devices connected to serial interface, i.e. Pin 0/1. e.g. Bluetooth, WiFi module, Xbee etc. Serial.***() is for USB debugging on pc serial monitor.
Analog 0: If you are going to use the Analog port 0, you have to pay attention to the switch(s1-s5), turn it OFF please. There are five buttons connected to A0, if you turn ON the button switch,then the A0 read value would be not the one you want.
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