DC 5-24V Dual PWM Digital Potentiometer Encoder with Memory
DC 5-24V Dual PWM Digital Potentiometer Encoder with Memory
DC 5-24V Dual PWM Duty Cycle Digital Potentiometer with Encoder & Memory Function
Take precise control of your electronics projects with this versatile Dual PWM Digital Potentiometer and Rotary Encoder. Operating across a wide voltage range of 5V to 24V DC, this compact module delivers two fully independent PWM output channels — each adjustable from 0% to 100% duty cycle — making it an ideal solution for DIY electronics, motor speed control, LED dimming, and power regulation applications.
Made in Mainland China.
Key Features
- Dual Independent PWM Output: OUT1 and OUT2 each output PWM with amplitude equal to the supply voltage; P1 and P2 outputs maintain a stable 5V amplitude (when supply voltage exceeds 5V), independently of the main supply.
- Wide Voltage Range: Compatible with DC 5V–24V power supplies for flexible integration into a wide variety of circuits.
- 20 kHz Default Frequency: Outputs a 20 kHz PWM signal by default, minimizing audible noise in motor and LED applications.
- 20-Step Duty Cycle Adjustment: Each click of the rotary encoder changes the PWM duty cycle by approximately 5%, allowing smooth and predictable adjustment from 0% to 100%.
- Clockwise to Increase: Intuitive operation — rotate the knob clockwise to increase duty cycle, counterclockwise to decrease.
- Channel Switching via Encoder Key: Easily toggle between PWM1 and PWM2 channels with the built-in encoder push-button. LED indicators (red = PWM2, green = PWM1) provide clear visual feedback on the active channel.
- Built-in Memory Function: The module remembers the last set duty cycle values even after power-off. Settings are saved approximately 5 seconds after adjustment, ensuring your configuration is retained on next power-up.
Technical Specifications
| Input Voltage | DC 5V – 24V |
| PWM Output Channels | 2 (OUT1, OUT2 / P1, P2) |
| OUT1/OUT2 Amplitude | Equal to supply voltage |
| P1/P2 Amplitude | Fixed ~5V (when Vcc > 5V) |
| Default PWM Frequency | 20 kHz |
| Duty Cycle Range | 0% – 100% (20 stages, ~5% per step) |
| Memory | Yes (saves after ~5 seconds) |
| Rotation Direction | Clockwise = Increase |
| LED Indicators | Green (CH1 / PWM1), Red (CH2 / PWM2) |
Package Contents
- 1× Dual PWM Digital Potentiometer / Encoder Module
Notes
- Due to lighting and display differences, the item's color may appear slightly different from product images.
- Please allow 1mm–10mm differences due to manual measurement.
For general guidance on electrical safety and DIY electronics best practices, refer to the U.S. Consumer Product Safety Commission – Electrical Safety resources.
Frequently Asked Questions
Q: What is the default PWM frequency of this dual PWM digital potentiometer?
A: The module outputs a default PWM frequency of 20 kHz, which helps reduce audible interference in motor control and LED dimming circuits. The duty cycle is adjustable from 0% to 100% in 20 steps of approximately 5% each.
Q: How does the memory function work on this digital encoder module?
A: After you adjust the PWM duty cycle, the module waits approximately 5 seconds before saving the setting to internal memory. When the device is powered back on, it will automatically restore the last saved duty cycle values — no manual reconfiguration needed.
Q: Can both PWM channels be controlled independently?
A: Yes. PWM1 and PWM2 are fully independent. You can switch between channels using the encoder's built-in push-button. The green LED indicates PWM1 is active, and the red LED indicates PWM2 is active. Each channel retains its own duty cycle setting independently.
Q: What is the difference between the OUT1/OUT2 and P1/P2 outputs?
A: OUT1 and OUT2 output PWM signals whose amplitude equals the supply voltage (e.g., 12V supply = 12V PWM amplitude). P1 and P2 are logic-level outputs that are always approximately 5V as long as the supply voltage exceeds 5V — useful for interfacing with 5V microcontrollers or logic circuits.