CJMCU-103 Rotary Angle Sensor Module – 300° Analog Potentiometer
CJMCU-103 Rotary Angle Sensor Module – 300° Analog Potentiometer
The CJMCU-103 Rotary Angle Sensor Module is a precision potentiometer-based sensor that outputs an analog voltage proportional to the angular position of its shaft. Ideal for applications requiring continuous rotation feedback, such as robotic joints, servo position sensing, and interactive controls. It offers a straightforward way to integrate angle measurement into your microcontroller projects.
Key Specifications
| Specification | Value |
|---|---|
| Operating Voltage | 3.3V – 5V DC |
| Output Type | Analog Voltage (0V to VCC) |
| Measurement Range | 0° – 300° (approx.) |
| Potentiometer Resistance | 10 kΩ |
| Linearity | ±0.5% |
| Dimensions | 20mm x 18mm |
What You Can Build With This
- Servo motor position feedback for precise control
- Robot arm joint angle sensing
- DIY volume control knob for amplifiers
- Wind direction indicator for weather stations
- Analog input demo for Arduino beginners
Compatibility
This module works with any development board that has an analog input, including Arduino Uno, Mega, Nano, ESP32, ESP8266, and Raspberry Pi (with an external ADC). It operates at both 3.3V and 5V logic levels, providing an output voltage range from 0V up to the supply voltage. Commonly paired with Arduino for simple analog reading using the analogRead() function.
Wiring Notes
Connect the VCC pin to a 3.3V or 5V power output, GND to ground, and the OUT pin to any analog input pin on your microcontroller. No additional components are required. To minimize noise, keep the signal wire away from high-current lines or use a small capacitor (e.g., 100nF) between OUT and GND.
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, the module outputs an analog voltage that can be read directly by any Arduino board's analog input pins. Just connect VCC to 5V, GND to GND, and OUT to A0, then use analogRead() to read the angle.
What is the measurement range of this sensor?
The CJMCU-103 provides an angular measurement range of approximately 0° to 300°. The output voltage is linearly proportional to the angle within this range.
Does it include an attachment knob?
The module includes a small shaft but no knob. You can easily attach any standard potentiometer knob with a 6mm shaft diameter.
📦 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.
What you can build with this
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