Photoelectric Encoder Coded Disc Code Wheel - Compoden
Photoelectric Encoder Coded Disc Code Wheel for Precision Speed Sensing
The Photoelectric Encoder Coded Disc Code Wheel is an optical rotary encoder disc designed for use with photoelectric sensors to measure rotational speed and angular position. It features a precision-printed pattern of alternating transparent and opaque segments that generate digital pulses when passed through an optical slot sensor. This code wheel is ideal for DIY robotics, motor control, and tachometer projects requiring accurate RPM measurement.
Key Specifications
| Specification | Value |
|---|---|
| Material | Polyester film (PET) |
| Outer Diameter | 30 mm |
| Center Hole Diameter | 5 mm |
| Slot/Window Count | 100 |
| Slot Width | 0.5 mm |
| Operating Temperature | -20°C to +80°C |
What You Can Build With This
- DIY Tachometer using Arduino and OLED display
- Motor Speed Controller with PID feedback
- Rotary Encoder for CNC machine position feedback
- Odometer for robotic wheel rotations
Compatibility
This code wheel pairs perfectly with optical slot sensors like the ITR9608 or TCRT5000, commonly used with 5V microcontrollers such as Arduino Uno, Nano, and ESP32. For 3.3V boards like Raspberry Pi Pico or ESP8266, ensure the sensor's output is level-shifted. It can be used with any photoelectric encoder module that supports a slotted disc.
Wiring Notes
Connect the photoelectric sensor's VCC to 5V, GND to ground, and signal pin to a digital input on your microcontroller. Use a pull-up resistor (10kΩ) on the signal line if the sensor has an open-collector output. Ensure the code wheel is securely mounted on the motor shaft and aligned with the sensor gap.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino?
Yes, this code wheel works with Arduino when paired with an optical slot sensor like TCRT5000. The sensor's digital output connects directly to any digital pin for pulse counting.
How do I calculate RPM with this?
Count the pulses over a fixed time interval; RPM = (pulses / slots_per_revolution) * (60 / time_seconds). For a 100-slot disc, divide pulse count by 100 and multiply by 60 for 1-second intervals.
Does this come with a sensor?
No, this listing includes only the code wheel disc. You will need a separate photoelectric slot sensor module, which is widely available.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items