Method of controlling the placement of micro-objects on a micro-assembler

An apparatus, comprising:

• a memory configured to store control data;
• a processing device, operatively coupled to the memory, the processing device configured to:
• detect a set of micro-objects on a surface of a micro-assembler comprising an array of force generating pixels;
• determine a set of positions of the set of micro-objects;
• identify one or more types of the set of micro-objects;
• identify a set of control patterns from a control pattern library based on the set of positions and the one or more types of the set of micro-objects;
• and
• manipulate the set of micro-objects using the set of control patterns, wherein each control pattern of the set of control patterns indicates a voltage pattern on a portion of the array of force generating pixels.