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250K ohm 16mm Rotary Pot Variable Potentiometer (Pack of 5)

250K ohm 16mm Rotary Pot Variable Potentiometer (Pack of 5) 250K ohm 16mm Rotary Pot Variable Potentiometer (Pack of 5)
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Component Name

250K ohm 16mm Rotary Pot Variable Potentiometer (Pack of 5)

Overview

The 250K ohm 16mm Rotary Pot Variable Potentiometer is a type of variable resistor that allows for precise and continuous adjustment of electrical resistance. This component is commonly used in a wide range of applications, including audio equipment, robotics, automation, and IoT projects. The pack of 5 units provides a convenient and cost-effective solution for prototyping, testing, and production.

Functionality

The Rotary Pot Variable Potentiometer operates on the principle of variable resistance. It consists of a rotating shaft attached to a resistive material, which is divided into three terminalsthe center terminal (wiper), and two outer terminals (end terminals). When the shaft is rotated, the wiper terminal moves along the resistive material, changing the resistance value between the center terminal and each of the end terminals.

Key Features

  • Resistance Value: 250K ohm (250,000 ohms)
  • Rotary Shaft: 16mm in diameter, with a smooth and precise rotation mechanism
  • Terminal Configuration: 3-pin configuration: center terminal (wiper), and two outer terminals (end terminals)
  • Power Rating: Suitable for low-power applications, typically up to 0.5W
  • Operating Temperature: -20C to 70C (-4F to 158F)
  • Insulation Resistance: 100M ohm (at 500V DC)
  • Dielectric Strength: 500V AC (1 minute)
  • Mechanical Angle: 270 (5)
  • Life Expectancy: 10,000 cycles (at 20C, 5C)
  • Package Includes: 5 pieces of 250K ohm 16mm Rotary Pot Variable Potentiometer

Technical Specifications

| Parameter | Value | Unit |

| --- | --- | --- |

| Resistance Value | 250K | ohm |

| Tolerance | 20% | % |

| Temperature Coefficient | 500 | ppm/C |

| Insulation Resistance | 100M | ohm |

| Dielectric Strength | 500 | V AC |

| Operating Angle | 270 | |

| Rotation Torque | 1.5 | Ncm |

| Life Expectancy | 10,000 | cycles |

Assembly and Installation

  • Mount the potentiometer on a suitable surface or PCB, ensuring the rotary shaft is aligned with the axis of rotation.
  • Connect the center terminal (wiper) to the signal output, and the outer terminals (end terminals) to the input and ground, respectively.
  • Secure the potentiometer using screws, adhesives, or clip-on mechanisms, as appropriate.
  • Ensure proper wiring and insulation to prevent electrical noise, interference, and shorts.
The Rotary Pot Variable Potentiometer is designed for surface-mount or through-hole installation. Proper assembly and installation ensure optimal performance and longevity. Follow these guidelines

Safety Precautions

  • Avoid exposure to excessive humidity, temperature, or vibration.
  • Do not exceed the recommended power rating or operating voltage.
  • Use insulation and shielding to prevent electrical noise and interference.
  • Avoid touching internal components or electrical conductors.
  • Follow proper safety guidelines when working with electrical components.
When handling and using the Rotary Pot Variable Potentiometer, observe the following safety precautions

Applications

  • Audio equipment: volume controls, tone controls, and audio signal processing
  • Robotics and automation: position sensors, speed control, and feedback systems
  • IoT projects: sensor interfaces, data acquisition, and signal conditioning
  • Industrial control systems: monitoring, measurement, and process control
The 250K ohm 16mm Rotary Pot Variable Potentiometer is suitable for a wide range of applications, including

By understanding the functionality, key features, and technical specifications of the 250K ohm 16mm Rotary Pot Variable Potentiometer, you can effectively integrate this component into your projects and achieve precise control and accurate measurement.

Pin Configuration

  • Component Documentation: 250K ohm 16mm Rotary Pot Variable Potentiometer (Pack of 5)
  • Overview
  • The 250K ohm 16mm Rotary Pot Variable Potentiometer is a high-quality, compact potentiometer designed for various applications, including audio equipment, electronic instruments, and robotics. This documentation provides a detailed explanation of the pins and their connections.
  • Pin Configuration
  • The 250K ohm 16mm Rotary Pot Variable Potentiometer has three pins, labeled as follows:
  • Pin 1: CCW (Counter-Clockwise) Terminal
  • Function: Connects to the negative terminal of the power source or ground
  • Description: This pin is connected to the outermost terminal of the potentiometer and represents the zero-ohm point.
  • Pin 2: Wiper Terminal
  • Function: Connects to the output signal or voltage divider
  • Description: This pin is connected to the rotating shaft of the potentiometer and represents the moving contact point. It provides a variable resistance output based on the shaft's position.
  • Pin 3: CW (Clockwise) Terminal
  • Function: Connects to the positive terminal of the power source or VCC
  • Description: This pin is connected to the innermost terminal of the potentiometer and represents the maximum resistance point (250K ohm).
  • Connection Structure
  • To connect the pins, follow these steps:
  • 1. CCW (Pin 1)
  • Connect to GND (ground) or the negative terminal of the power source
  • 2. Wiper (Pin 2)
  • Connect to the output signal or voltage divider circuit
  • This pin will provide a variable resistance output based on the shaft's position
  • 3. CW (Pin 3)
  • Connect to VCC (positive terminal of the power source) or a voltage supply
  • This pin provides the maximum resistance point (250K ohm) when the shaft is in the fully clockwise position
  • Important Notes
  • The potentiometer has a logarithmic taper, which means the resistance change is not linear with the shaft's rotation.
  • The 250K ohm rating indicates the maximum resistance value between the CW and CCW terminals.
  • When using the potentiometer as a voltage divider, ensure the input voltage is within the recommended operating range to avoid damaging the component.
  • Always follow proper soldering and wiring practices when connecting the pins to avoid damage or electrical shock.
  • By following this documentation, you can successfully integrate the 250K ohm 16mm Rotary Pot Variable Potentiometer into your project, taking advantage of its robust performance and compact design.

Code Examples

Component Documentation: 250K ohm 16mm Rotary Pot Variable Potentiometer (Pack of 5)
Overview
The 250K ohm 16mm Rotary Pot Variable Potentiometer is a versatile and widely used component in IoT projects. It is a type of variable resistor that allows for precise control of voltage levels. The rotary potentiometer consists of a rotating shaft that varies the resistance between the three terminals, enabling smooth and continuous adjustments. This documentation provides an overview of the component, its specifications, and code examples demonstrating its usage in various contexts.
Specifications
Resistance: 250K ohm
 Power Rating: 0.5W
 Rotary Angle: 300
 Shaft Diameter: 6mm
 Body Diameter: 16mm
 Terminal Type: 3-pin
Pinout
The 3-pin terminal of the rotary potentiometer is assigned as follows:
Pin 1: CCW (Counter-ClockWise) Terminal
 Pin 2: Wiper Terminal
 Pin 3: CW (ClockWise) Terminal
Code Examples
### Example 1: Reading Rotary Potentiometer Values with Arduino
In this example, we will connect the rotary potentiometer to an Arduino board and read the analog values from the potentiometer.
Hardware Connection
Connect the CCW terminal of the rotary potentiometer to GND on the Arduino board.
 Connect the Wiper terminal of the rotary potentiometer to Analog Input A0 on the Arduino board.
 Connect the CW terminal of the rotary potentiometer to 5V on the Arduino board.
Software Code
```c
const int potPin = A0;  // Pin connected to the Wiper terminal
void setup() {
  Serial.begin(9600);
}
void loop() {
  int potValue = analogRead(potPin);
  float voltage = potValue  (5.0 / 1023.0);
  Serial.print("Potentiometer Value: ");
  Serial.print(potValue);
  Serial.print(" Voltage: ");
  Serial.println(voltage);
  delay(50);
}
```
This code reads the analog value from the potentiometer and converts it to a voltage level between 0V and 5V.
### Example 2: Using Rotary Potentiometer with Raspberry Pi to Control an LED's Brightness
In this example, we will connect the rotary potentiometer to a Raspberry Pi and use it to control the brightness of an LED.
Hardware Connection
Connect the CCW terminal of the rotary potentiometer to GND on the Raspberry Pi.
 Connect the Wiper terminal of the rotary potentiometer to GPIO 17 on the Raspberry Pi.
 Connect the CW terminal of the rotary potentiometer to 3.3V on the Raspberry Pi.
 Connect an LED to GPIO 18 on the Raspberry Pi.
Software Code
```python
import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)
# Set up GPIO 17 as an input for the potentiometer
GPIO.setup(17, GPIO.IN)
# Set up GPIO 18 as an output for the LED
GPIO.setup(18, GPIO.OUT)
while True:
    pot_value = GPIO.input(17)
    brightness = int((pot_value / 1023.0)  100)
    GPIO.output(18, GPIO.HIGH)
    time.sleep(brightness / 100.0)
    GPIO.output(18, GPIO.LOW)
    time.sleep((100 - brightness) / 100.0)
```
This code reads the analog value from the potentiometer and uses it to control the brightness of the LED by adjusting the duty cycle of a PWM signal.
These code examples demonstrate the basic usage of the 250K ohm 16mm Rotary Pot Variable Potentiometer in IoT projects. The component can be used in a variety of applications, such as audio equipment, robotics, and automation systems, where precise control of voltage levels is required.