User Manual

For C language users:

Step 2: Open the code file

cd /home/pi/SunFounder_Super_Kit_V3.0_for_Raspberry_Pi/C

Step 3: Compile the Code

make 08_4N35

Step 4: Run the executable file above.

sudo ./08_4N35

Code Explanation

digitalWrite(_4N35Pin, LOW); // set the I/O port as low level (0V), thus the optocoupler

is energized, and the pin connected to LED conducts to the 0V. Then the LED lights up.

delay(500); // optocoupler is a kind of electronic device and there is no limitation on

its on-off frequency.

digitalWrite(_4N35Pin, HIGH); // set I/O port as high level (3.3V), thus the optocoupler

is not energized ,and the pin connected to LED cannot conduct to the 0V. Then the LED

goes out.

For Python users:

Step 2: Open the code file

cd /home/pi/SunFounder_Super_Kit_V3.0_for_Raspberry_Pi/Python

Step 3: Run

sudo python 08_4N35.py

Code Explanation

GPIO.output(Pin_4N35, GPIO.LOW) # set the pins of optocoupler as low level, thus the

optocoupler is energized, and the pin connected to LED conducts to the 0V.Then the LED

lights up.

time.sleep(0.5) #wait for 0.5 second. The on-off frequency of the

optocoupler can be changed by modifying this parameter.

GPIO.output(Pin_4N35, GPIO.HIGH) # set the pins of optocoupler as high level, thus the

optocoupler is disconnected, and the pin connected to LED break the connection to the

0V. Then the LED goes out.

time.sleep(0.5)

You will see the LED blinks.

SunFounder