#OPTO ISOLATOR INPUG IC GENERATOR#
#OPTO ISOLATOR INPUG IC SERIAL#

This optoisolator is configured for data rates up to 9600bps. What you put into the IN pins, will be replicated on the the OUT pins, but at the higher voltage (HV). We threw some transistors on this compact board to correct the inversion. Great for use in noisy circuits where signal lines require electrical isolation.Ī normal LED opto-isolator will invert the logic of a signal. This breakout board uses the ILD213T optoisolator and discrete transistors to correct the logic. This board will isolate the systems, creating a type of electrical noise barrier between devices. We often use this board to allow a microcontroller control servos or other motors that use a higher voltage than the TTL logic on the (3.3V or 5V) micro, and may cause electromagnetic interferance with our system as the motors turn on and off. This allows the low-voltage side to control a high voltage side. This IC has two LEDs and two photodiodes built-in. This board electrically isolates a controller from the high-power system by use of an opto-isolator IC. This board is helpful for connecting digital systems (like a 5V microcontroller) to a high-voltage or noisy system. Compared to traditional optocoupler solutions, our isolated digital input devices provide a simple, low-power alternative with an accurate current limit. I hope this instructable helped you out and if you have any questions or need some help just leave a comment and ill get back to you ASAP!!!.This is a board designed for opto-isolation. Isolated digital inputs provide galvanic isolation between a sensor input, or other input type, and a logic output for a host controller interface. If everything is working properly your fan or motor should be spinning, just remember if your starting from zero (fan off) you will probably need to enter a number of 20 or higher to get the devise spinning.

#OPTO ISOLATOR INPUG IC SERIAL#

Now that you have the code load it onto your arduino then open the serial monitor, Type in a number between 0 & 255 and hit enter. Int fan = 9 //fan on pin 9 int spe //fan speed void setup() Now that you have the circuit built lets upload the code and try it out, just copy the code below and paste it into your Arduino ide. Just use a rectifier diode with the positive end connected to the negative of the fan or motor and the negative side of the diode to the positive side of your devise.

#OPTO ISOLATOR INPUG IC GENERATOR#

If you are using a big fan or motor you might want to place a diode between the positive and negative of your devise so if the power gets cut the power generated by the fan or motor does not exceed the reverse voltage of your transistor (if the power is cut and your motor is still spinning it will act like a generator until it stops spinning). The transistor I recommend for this instructable is a 2N2222 but any transistor that will handle the voltage and amps of your fan or motor will work fine, If you are going to be using a motor or devise that has high current pull I suggest using a Darlington transistor like the TIP120. The second 220Ω resistor limits the current flow through the phototransistor in the chip, the SHARP PC817 will handle 35 volts at 50mA but it will get very hot and not last long under those conditions so I put a current limiting resistor in the circuit to keep it way under those conditions. If you use a different optocoupler than the SHARP PC817 you may need to adjust this resistor to compensate, the PC817 has a Max led input voltage of 1.4 volts and the resistor brings the arduino 5 volts down to 1.25 volts. The first 220Ω resistor is connected between pin 9 on the arduino board and the positive side of the optocouplers led in the chip, this resistor cuts down the voltage from the board so it does not over power the led and burn it out. a 12 volt power source or a 9 volt battery will work if you don't have one. 1 X PCfan or motor you want to control (make sure it will handle the power supply your using). 1 X SHARP PC817 optocoupler (or any similar one will work). 1 X 2N2222 transistor (or any similar one that will handle the current of the devise you want to power). The picture above shows the circuit you will need to build.

Opto isolator inpug ic