Fixed Layout Prototyping – Hexagonal Electronics Breadboard
For the PCB I designed, each shared-edge of every tile can take a single 0603 SMT device, with one footprint on the top surface, connecting adjacent tiles and a second footprint on the bottom surface acting similarly. The aim is to construct the circuit around the SOT23-3 device by building up connections from the external connection nodes {A,B,C} using common prototyping parts such as chip resistors, ceramic capacitors and diodes. It’s pretty simple to map a circuit onto this fixed-interconnect, just by assigning connection nodes {A,B,C} that are near to the appropriate device pin, then fitting intermediate nodes as required.
Source: davidrowntree.co.uk