X9C103S DC 3-5V Digital Potentiometer Board Module for Arduino

X9C103S DC 3-5V Digital Potentiometer Board Module for Arduino 

The X9C103S Digital Potentiometer Module is an easy-to-use board based on the X9C103S IC, offering a digitally controlled 10K? potentiometer for microcontroller and Arduino projects. Instead of manually adjusting a trimpot, this module allows the resistance value to be changed using digital signals. It provides 99 steps of resolution and can store the last wiper position even after power is removed (non-volatile memory).
It is ideal for applications that require adjustable resistance, voltage control, signal leveling, or analog tuning through a microcontroller.

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Features

• Based on the X9C103S digital potentiometer IC
• 10K ohm (103) resistance range
• Operates on 3V to 5V, compatible with Arduino, ESP32, Raspberry Pi, etc.
• 99 adjustable steps for smooth and precise digital tuning
• Three terminal potentiometer structure: H (High), W (Wiper), L (Low)
• Non-volatile storage retains last wiper position after power-off
• Push-button compatible signals or microcontroller-controlled input
• Compact breakout board with pin headers for easy interface
• Low-power operation suitable for battery projects
• Simple increment/decrement and store control lines

Applications

• Digitally adjustable voltage divider circuits
• Audio signal control (volume, tone adjustment)
• Sensor sensitivity or threshold tuning
• Automatic gain control in amplifier circuits
• LED brightness control
• Calibration and tuning without mechanical trimpots
• Remote or automated analog adjustments
• Replacing mechanical potentiometers in long-life applications
• Programmable power supplies and variable voltage outputs
• Robotics and embedded control systems

Advantages

• Allows resistance adjustment without mechanical wear
• Precise and repeatable digital control
• Stores wiper position even after power is removed
• Eliminates the need for physical knobs or presets
• Easy to interface with microcontrollers using 3 control pins
• Provides reliable long-term performance
• Useful for automation, tuning, and closed-loop control systems
• Compact and low-cost module for Arduino and DIY projects