Adafruit perma proto full half and quarter sizes packs of 3 adafruit 571 the adafruit perma proto half size help you make the difficult transition from a breadboard project to a pcb and solder gadget they are laid out with the same hole pattern and markings as a breadboard so you can make a direct copy of your working prototype each long edge has two power lines and the centre strips have 5 x pads just like a classic breadboard the traces between pads can be cut if you need to isolate p