PC817 Optocoupler Isolation Board 2/4/8 Channel 3.6-30V Pakistan

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Description

PC817 Optocoupler Isolation Board β€” 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 β€” jaise 3.3V microcontroller se 12V ya 24V relay ya motor driver β€” 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.

πŸ“‹ Specifications Table

Field Detail
IC / Part Number PC817 (EL817 compatible)
Channels Available 2-Channel / 4-Channel / 8-Channel
Input (Driver) Voltage 3.6V – 24V DC
Output Voltage Range 3.6V – 30V DC
Max Output Current ~10mA per channel (total power constant)
Signal Frequency Limit ≀ 4 KHz (pulse signals)
Output Mode Selectable via jumper: HIGH or LOW output
Isolation Type Photoelectric (Optocoupler)
Interface GPIO (Digital IN/OUT via screw terminals)
Compatible Boards Arduino Uno/Nano/Mega, ESP32, ESP8266, STM32, Raspberry Pi
Board Size (4-ch) 48mm Γ— 38mm | Hole spacing: 42mm Γ— 32mm
Board Size (8-ch) [VERIFY] approx. 96mm Γ— 38mm
Connector Type Screw terminal blocks (green)

⚑ Kahan Use Hota Hai (Use Cases)

  • Smart Home Automation: 3.3V ESP32 se 12V/24V relay ya solenoid valve control karna β€” 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 β€” 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.

πŸ”Œ Kaise Connect Karein (Wiring Guide)

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

OUT (V+)           β†’ External 5–24V+   β†’ External 5–24V+
OUT (V-)           β†’ External GND      β†’ External GND
G  (Output GND)    β†’ External GND      β†’ External GND

Jumper Position:
  ● Jumper ON  β†’ Output LOW when input active (Active LOW)
  ● Jumper OFF β†’ Output HIGH when input active (Active HIGH)

⚠️ Input GND and Output GND are ISOLATED β€” 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 β€” 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 β€” 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.

πŸ“¦ Package Contents

  • 1Γ— PC817 Optocoupler Isolation Board (2-ch / 4-ch / 8-ch as selected)
  • Jumper cap pre-installed
  • Screw terminals pre-soldered

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

⚠️ Stock Note: Yeh item abhi out of stock hai lekin aap order kar sakte hain β€” jaise hi stock aaye ga, turant dispatch hoga. COD available hai Pakistan mein!