Why calibrate? Cheap resistors in the module cause voltage/current readings to drift over time. You will need a Digital Multimeter (DMM).
How to Calibrate Voltage:
How to Calibrate Current:
To access all configuration settings:
If the default password does not work, the previous administrator changed it. You will need a factory reset (covered in Part 6).
Once enrolled, using the Zk-pp2k is simple:
Introduction
The ZK-PP2K is a highly versatile, intelligent constant current, constant voltage (CC/CV) buck power supply module. Known for its affordability and precision, it’s a favorite among hobbyists, electronics engineers, and battery enthusiasts for projects ranging from driving high-power LEDs to charging lithium-ion batteries. However, due to its multifunction interface and complex calibration requirements, many users find themselves searching for a clear, comprehensive Zk-pp2k Manual.
If you have just purchased this module and are staring at a blinking blue OLED screen with no idea how to set the current limit or calibrate the voltage, you have come to the right place. This manual covers everything from the initial wiring diagram to advanced calibration steps.
Based on years of real-world use, here are practices that extend the life of your Zk-pp2k beyond what the manual advises: Zk-pp2k Manual
Note from the manual: Maximum fingerprint templates vary by firmware: 1,500 to 2,200 users. Exceeding this will prompt “Memory Full.”
The most common cause of failure is incorrect wiring. The ZK-PP2K has two distinct sides: Input and Output. Do not reverse them.