PC817 Optocoupler Isolation Board 2 Channel 3.6-30V

PC817 Optocoupler Isolation Board — Arduino, ESP32, STM32 aur industrial projects ke liye perfect voltage isolation solution. Pakistani students aur engineers ke liye ideal!

Jab aapko do alag voltage systems ko safely connect karna ho — jaise 3.3V microcontroller se 12V ya 24V relay ya motor driver — tab yeh module kaam aata hai. PC817 optocoupler ki madad se input aur output circuits electrically isolated rehte hain, jo aapke microcontroller ko high-voltage spikes se protect karta hai.

📋 Specifications Table

⚡ Kahan Use Hota Hai (Use Cases)

• Smart Home Automation: 3.3V ESP32 se 12V/24V relay ya solenoid valve control karna — safely aur without damage.
• Industrial Monitoring: PLC ya industrial sensors ke saath microcontroller ko isolate karna taake noise aur voltage spikes se bacha ja sake.
• FYP / College Lab Projects: BSEE/BSCS students ke liye multi-voltage system integration — motor drivers, actuators, aur sensors ek saath.
• Robotics: High-current motor driver (L298N, BTS7960) ke control signals ko Arduino se isolate karna.
• IoT Projects: ESP8266/ESP32 NodeMCU se 24V industrial sensors ya output devices ko trigger karna without level shifter complexity.

🔌 Kaise Connect Karein (Wiring Guide)

PC817 Board        Arduino Uno         ESP32 (30-pin)
──────────────────────────────────────────────────────
IN1                → D2 (GPIO)         → GPIO 4
G  (Input GND)     → GND               → GND

OUT (V+)           → External 5–24V+   → External 5–24V+
OUT (V-)           → External GND      → External GND
G  (Output GND)    → External GND      → External GND

Jumper Position:
  ● Jumper ON  → Output LOW when input active (Active LOW)
  ● Jumper OFF → Output HIGH when input active (Active HIGH)

⚠️ Input GND and Output GND are ISOLATED — do NOT connect together.

❓ FAQ

Q1: Kya yeh 3.3V ESP32 ke saath kaam karta hai?
Yes! The PC817 input works from 3.6V–24V. A 3.3V ESP32 GPIO is slightly below the minimum spec — use a 5V logic signal or add a small pull-up resistor on the input side for reliable triggering.

Q2: Kya main isse relay drive karne ke liye use kar sakta hoon?
Yes, it can directly drive low-power 24V relays. For high-current relays, use the optocoupler output to drive a transistor (e.g., BC547) or MOSFET stage in between.

Q3: Konsi Arduino library chahiye?
No special library needed — use digitalWrite(pin, HIGH/LOW) in Arduino IDE. Same standard GPIO functions apply for ESP32.

Q4: Agar signal 4KHz se zyada ho toh kya hoga?
Signals above 4KHz will not switch reliably. For high-frequency PWM, use a dedicated high-speed optocoupler like 6N137 instead.

📦 Package Contents

• 1× PC817 Optocoupler Isolation Board (2-ch)
• Jumper cap pre-installed
• Screw terminals pre-soldered

Note: Wires, Arduino board, and power supply NOT included.

Delivery across Pakistan. Free shipping on prepaid orders above Rs. 10,000.

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