Today, we want to have a 5V battery Pack to build a 3.7 V LiPo battery used and Charging via USB port.
We connect the battery connector of the charge controller with the cable to the battery and to the input of the Step-Up module. Caution pay attention to polarity! Now we connect the USB input and measure the voltage at the output of the Step-Up module. The voltage can be adjusted via the trim potentiometer amd Step-Up module. If no battery is connected, the blue LED lights up on the Step_Up module during the Charging process, the red.
The output voltage should always have the value set regardless of whether the USB input is connected or not. So that you can stow the whole of the battery Pack properly, I'm a suitable case for the 3D-printer designed. You can of Thingivers download.
Much Fun when Tinkering.