X9c103 Digital Potentiometer Module

Overview:

• Potentiometer are variable resistors.
• Traditional potentiometers use a mechanical mechanism to vary the resistance.
• This is a digital potentiometer –
  • it is a variable resistor whose resistance value can be varied digitally from an Arduino or a Raspberry Pi.
• in addition It consists of a
• 3 pin output which can replace a mechanical potentiometer
• can also store the current position after a power off in non volatile memory and start from the same position on power on.

Uses X9c103 Digital Potentiometer

• for example Potentiometers are incredibly useful,
• whether you’re controlling the volume on your stereo, the ‘mood lighting’ in your room, speed of a DC Motor, etc.
• The problem with traditional potentiometers is the fact that your microcontroller doesn’t have an easy way to interface with them.
• Digital Potentiometers solve that problem by allowing you to control a voltage splitter with digital signals.

Instructions

• Wire it up just like a potentiometer and use signals to ‘turn the knob.’
• Another handy feature of digital potentiometers is that because they aren’t controlled mechanically,
• they don’t have a pre-determined sweep profile.
• In other words, depending on the way you write your code the potentiometer can ‘sweep’
  • in a linear fashion,
  • a logarithmic fashion,
  • or according to any other profile you like.
• Digital potentiometers can also be used in conjunction with rotary encoders
  • to consolidate large banks of potentiometers into one ‘smart’ rotary control.

Features X9c103 Digital Potentiometer

• Simple 3 pin interface to control the resistance!
• Supply voltage: 3V-5V
• Chip: X9C103S
• PCB board size: 2.7 * 1.3CM
• 10K span potentiometer.
• Potentiometer center tap between 0-10k slide in total 100 (potentiometer wiper typical impedance 40 ohms)
• VL and VH digital potentiometer sliding rheostat port corresponding to the low-end and high-end, allowing the input voltage range -5V to + 5V.