Did you have the connection cables for power for the power supply of your devices gone? Get a separate Power Supply!
Elegoo delivers a power supply similar to that of Ywrobot MB102. This can be used to select a standard (2.1 mm) DC Jack or USB as an alternative input, if the MicroUSB connector is missing.
The handling is simple: put the power supply on the breadboard with its PINs, the jumper according to the desired output voltage (2x 3.3 and 5V available), with power supply (in the picture a battery is to be seen and a prefabricated DC Jack cable). Switch on the power supply as soon as the device has been supplied with GND and 5V DC.
No code, no Schematics needed.
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