Press the encoder briefly, then turn it to adjust the percentage (0% - 100%).
: Provides continuous frequency control (1Hz to 150KHz) and duty cycle adjustment (0–100%) for tasks like motor speed regulation or LED dimming. PULSE Mode
To enter the system menu, press and hold the rotary encoder for 2-3 seconds until the screen changes.
Even with a manual, things go wrong. Here is the diagnostic table. Zk-pp2k Manual
The ZK-PP2K has two primary modes of operation: and PULSE Mode .
Long-press the encoder knob for 2 seconds to enter .
When wiring, always connect the power supply to the VCC and GND terminals, and connect your load to the OUT terminals. The module's internal circuitry directly connects the OUT+ terminal to the V+ input, meaning the output signal's amplitude will always match the supplied voltage. Press the encoder briefly, then turn it to
Short press: Switch between parameters (Frequency, Duty, etc.). Long press (2s): Switch between PWM and PULSE modes. Direct Driving : Unlike standard low-power generators, the
Why calibrate? Cheap resistors in the module cause voltage/current readings to drift over time. You will need a .
The ZK-PP2K features a clear LCD screen, an adjustable digital encoder knob, and dedicated push buttons for seamless navigation. Terminal Connections Positive power supply input (3.3V - 30V). V- / GND: Negative power supply / Ground reference. OUT+: Signal output positive terminal. OUT-: Signal output negative terminal (GND reference). Driving Loads Directly vs. Indirectly Even with a manual, things go wrong
Adjusting frequency to control speed and torque.
: Negative load control terminal. The internal MOS switch toggles this line to complete the circuit.
Epilogue — The Living Manual At the end, the manual admitted something almost human: protocols live in people as much as in math. Updates, community debates, and the slow hardening of practice were part of its life. The last sentence was a quiet instruction: "Guard the keys, test the proofs, teach the next generation."
Press the button. The screen will display OUT when the output is active. 5. Wiring Instructions V+: Positive DC power ( V-: Negative DC power (GND).