→Testing serial output: Warning → Tip – Since there are no software crashes, broken hardware or injuries
The first number is switch data, so it's either 0 (switch off) or 1 (switch on). After the "," mark is our throttle data. First it's 0.00, which meaning idle throttle and then potentiometer is gradually turned until it reaches 0.99.
Warning|Remember to '''unplug Arduino's USB cable and plug it back''' in because Flightgear won't be able to read serial without doing this! You have to do this every time after you use Arduino IDE.}}
==== Start FlightGear ====