ZK-PP2K High Power PWM Generator & 8A DC3.3-30V Driver Module

Specifications

• Input Voltage: 3.3V - 30V DC (Wide range compatibility)
• Output Capacity: 8A Max (High-Power MOS Switch Output)

      Modes:

• PWM Mode: Adjust Frequency (1Hz - 150kHz) and Duty Cycle (0 - 100%).
• Pulse Mode: Precision control of Start Delay time, Pulse Width time, and Pulse Number (Count).
• Number of pulses: 1-9999

• Frequency Precision: 1% Accuracy across the range.
• Display: High-contrast LCD with backlight (Toggleable).
• Interface: 4-Button control (Mode/Set/Up/Down) with rotary-free digital precision.
• Protection: Reverse polarity protection on input.
• Dimensions: 79mm x 43mm x 30mm (Standard Panel Mount cutout).
• Weight: ~60g.

Applications

• Solenoid Valve Cycling: Use "Pulse Mode" to create automated Open/Close loops for irrigation or endurance testing.
• DC Motor Speed Control: Direct PWM dimming for fans, pumps, or conveyor belts.
• LED Lighting Control: Flicker-free dimming for 12V/24V LED strips.
• Automated Aging Tests: Set a specific number of pulses (e.g., 5000 cycles) to test electromechanical components.
• Scientific Experiments: Precise electrolysis timing or chemical dosing pump control.

Project Evolution
      From "Blinking LED" to "Industrial Automation"

• Before (The Bottleneck): You likely started with an Arduino analogWrite() to fade a small LED. But when you tried to attach a 12V motor or a heavy solenoid, you realized the Arduino couldn't handle the voltage or current, requiring messy breadboards, transistors, and flyback diodes.
• Now (The Upgrade): The ZK-PP2K replaces the Arduino, the code, and the MOSFET driver. It is a standalone station. You can now build a standalone endurance testing rig or a smart fan controller without writing a single line of C++ code.
• Effort Level: Beginner/Intermediate. No coding required. Just wire power and load.
• Minimum Hardware: A DC Power Supply (matching your load voltage) and the Device (Motor/Light/Valve).

Wiring & Safety
     Wiring Logic:

• V+ / V-: Connect your Power Supply here (3.3V to 30V).
• LED+ / LED-: Connect your Load here (Motor, Solenoid, LED). Note: Although labeled LED, this is the general load output.

Package Includes:

• 1x ZK-PP2K High Power PWM Generator & 8A DC3.3-30V Driver Module

Frequently Asked Questions (FAQ)

• Can the ZK-PP2K drive a DC motor directly?
  Yes, it can drive DC motors directly up to 8A. It acts as a speed controller.
• Does this generate AC or DC signals?
  It generates a DC Switch signal (Square wave). It connects/disconnects the Ground path.
• Can I use this to dim 220V AC bulbs?
  No, this is strictly for Low Voltage DC (3.3V-30V) circuits only.
• How do I switch between PWM and Pulse mode?
  Long press the 'SET' button for 6 seconds to toggle between interface modes.
• What is the maximum frequency output?
  The unit can output up to 150kHz.
• Can I set the number of pulses it sends?
  Yes, in Pulse Mode, you can set the exact number of pulses to send before stopping.
• Does it save settings after power failure?
  Yes, all parameters (Frequency, Duty Cycle, Delay) are saved in non-volatile memory.
• Can I trigger it externally?
  No, this version is designed for internal automatic loop control or manual button operation.
• Is the output isolated?
  No, the V- (Input Ground) and Load- are connected via the MOS switch; it is not galvanically isolated.
• What happens if I connect reverse power?
  The unit has basic reverse polarity protection, but prolonged reverse connection should be avoided.
• Can it drive a NEMA 17 Stepper Motor?
  No, stepper motors require specific stepper drivers (like A4988). This is for Brushed DC motors only.
• Is the LCD backlit?
  Yes, the LCD has a clear blue backlight for visibility in dark enclosures.
• Can I use this to test servo motors?
  Yes, if you set the Frequency to 50Hz, you can manually adjust Pulse Width (1ms-2ms) to test Servos, though a dedicated tester is easier.
• What is the resolution of the duty cycle?
  The duty cycle is adjustable in 1% steps.
• Can I use it as a delay timer?
  Yes, by using Pulse Mode and setting the delay time, it can act as a delayed-start switch.
• How accurate is the frequency generator?
  It offers approximately 2% accuracy, which is sufficient for most motor and solenoid applications.
• Does it support 24V PLC signal inputs?
  This unit generates signals/power; it does not accept control signals from a PLC.
• Can I mount this in a control panel?
  Yes, it has snap-fit clips designed for a standard rectangular panel cutout.
• What is the max current for 12V LED strips?
  It can handle up to 8A, which is roughly 96W of LED strips at 12V.
• Is this product Probots ProSpec Grade?
  This item acts as a Probots™ ProSpec Grade equivalent for hobbyists due to its higher durability compared to bare PCBs.