Measure the voltage across OUT+ and OUT- using a digital multimeter.
If you’ve recently purchased an Arduino starter kit or are digging through a box of spare modules, you’ve likely stumbled upon a small PCB labeled . Hw-133-v1.0 Datasheet
The MP1584EN IC contains an integrated high-side power MOSFET switch. The internal control engine uses current-mode control to switch the input voltage at a default frequency of 1 MHz. A miniature, high-current power inductor (typically Measure the voltage across OUT+ and OUT- using