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For C language users:
Step 2: Change directory
cd /home/pi/SunFounder_SensorKit_for_RPi2/C/04_relay/
Step 3: Compile
gcc relay.c –lwiringPi
Step 4: Run
sudo ./a.out
For Python users:
Step 2: Change directory
cd /home/pi/SunFounder_SensorKit_for_RPi2/Python/
Step 3: Run
sudo python 04_relay.py
