While active, the board consumes about 8mA ... This is not your typical DIY power bank nor a gigantic 64 cells power bank. It is a precise and careful modification of an existing product, adding ...

Turning on the power bank delivers 5 V to the NodeMCU board and allows it to work ... The NodeMCU boards in [PJ Allen]’s DIY remote use ESP-NOW for their wireless communications, a nifty ...