Waveshare 4.01inch 640×400 Pixels ACeP 7-Color E-Paper E-Ink Display HAT for Raspberry Pi XL6019 DC-DC 5A Adjustable Boost Power Supply Module and WiFi connectivity enabled

and WiFi connectivity enabled

To measure the current you need to clamp the meter around one of the wires and not the whole power cord

IN - Input signal from microcontroller (3

LED Driver Smoothing: Filter the output of buck or boost converters driving high-power LED arrays to eliminate flicker and extend LED lifespan

Waveshare 4.01inch 640×400 Pixels ACeP 7-Color E-Paper E-Ink Display HAT for Raspberry Pi XL6019 DC-DC 5A Adjustable Boost Power Supply Module and WiFi connectivity enabledWaveshare 4. 01inch 640400 Pixels ACeP 7 Color E Paper E Ink Display HAT for Raspberry Pi Waveshare 4. 01inch 640x400 Pixels ACeP 7 Color E Paper E Ink Display HAT for Raspberry Pi E paper display utilizes microcapsule electrophoretic technology for displaying, the principle is charged particles suspended in the clear fluid will move to sides of microcapsule when an electric field is applied, making the microcapsule become visible by reflecting