A wireless charging resource includes: processing elements; insulating elements; and coils, where the processing elements, insulating elements, and coils are arranged in a repeating array. A method of wireless charging includes: sending, from a charging resource, an analog ping to identify charging coils associated with a charging receiver; sending a digital ping to identify optimal charging coils; and activating the optimal charging coils in order to provide charging power to the charging receiver. A method of generating a layout for a wireless charging transmitter includes: determining an available area; calculating a number of coils to be included in an array; arranging a first set of coils including the number of coils on a first coil layer; arranging a second set of coils including the number of coils on a second coil layer; and arranging a third set of coils including the number of coils on a third coil layer.