This is a bit of a tricky one because the (a popular, low-cost CNC buck-boost converter module) is famous for arriving in a box with either no instructions or a very tiny, poorly translated manual.
To access the deeper "Software Protection" menu, for 2 seconds while the output is off. Turn the knob to scroll through these parameters:
Short press the U/I button. The voltage digits will start flashing. zk5kx manual
To change a value, press the knob to select the digit and rotate to adjust. Long-press again to save and exit. 5. Calibration (Use with Caution)
The is a versatile DC-DC adjustable step-up/step-down power supply module. Whether you are building a DIY lab bench power supply, charging batteries, or driving LEDs, this module packs a lot of punch into a small form factor. 1. Key Specifications Input Voltage: 6.0V – 36V Output Voltage: 0.6V – 36V Output Current: 0 – 5.0A This is a bit of a tricky one
If you’re looking to get your power supply up and running without blowing anything up, here is a comprehensive "unofficial" manual to help you master the controls and features. The Unofficial ZK-5KX Buck-Boost Converter Manual
Short press the U/I button again while in setting mode. The current digits will flash. Turn the knob to set your maximum current limit (essential for CC mode/charging). The voltage digits will start flashing
Short press to toggle the output on or off. Long press (2 seconds) to switch the display between the input voltage and output voltage.
While rated for 80W, the module can get very hot. If you are consistently pulling more than 3A or 50W, consider adding a small 12V fan to the heatsink.