USB adjustable buck-boost power supply regulator module 5V to 3.3V 9V 12V 18V 24V DPL

Instructions for use:

1. Button

The left "ON" key: short press-control the opening or closing of the output terminal, in the calibration mode, minus one unit of voltage or current value; long press-long press for more than 3 seconds to release, the digital tube is off, press any key The digital tube resumes display.

The "SW" key on the right: Short press-switch between voltage, current and wheel display; long press-enter or exit the calibration mode, enter in the display voltage interface to calibrate the voltage, enter in the display current interface to calibrate the current;

2. Potentiometer knob

Rotate clockwise to increase the output voltage, rotate counterclockwise to decrease the output voltage, stepless conversion voltage range 1.2-24V.

3. Indicator light

V——The indicator light is on to indicate that the current digital tube display is the voltage value, the unit is V;

A——The indicator light is on, it means that the current value displayed by the digital tube is the current value, the unit is A;

4. Input and output ports

Input terminal-the left side, USB male, microUSB, pad three ways to choose as input, the input range is 3.5-12V;

Output terminal-on the right side, the blue 2P terminal is used as output, and the output range is 1.2-24V.

5. Calibration method

Output voltage calibration-when the digital tube keeps displaying the voltage, long press the "SW" key for more than 3 seconds to release, the digital tube flashes, short press the "SW" key once, the voltage value increases by one unit, short press the "ON" key voltage value Decrease one unit. When the output voltage is low, you may have to press it several times to see the value change 0.1V; press and hold the "SW" key for more than 3 seconds to release it to exit the calibration mode.

Output current calibration-when the digital tube keeps displaying the current, press and hold the "SW" key for more than 3 seconds to release, the digital tube flashes, short press the "SW" key once, the voltage value increases by one unit, short press the "ON" key voltage value Decrease by one unit, you may have to press it several times to see the value change 0.01A; press and hold the "SW" key for more than 3 seconds to release it to exit the calibration mode. . Note: The calibration is more accurate when the current is greater than 1A; the display error is large when the output current is less than 0.05A, and it may not be displayed when the output current is less than 10-30mA.

Electronic module products require you to have a certain electronic foundation and take into account the compatibility of the module with your system. Read the product description carefully before use.