Describe When we use Ardu to make works, we always feel that the port is not good for wiring. Either use a breadboard to plug in, or use a sensor expansion board to connect with a DuPont cable, which is not very reliable. Now we have launched a terminal expansion board, which can directly screw the wire end to the terminal, which is reliable and convenient. At the same time, it also supports prototype circuit construction, which belongs to the collection of Ardun Screw Shield and Ardu ProtoShield prototype expansion board. *A small breadboard can be placed in the middle part, which is convenient for experiment expansion Packing list 1*Expansion board *Provide binding post IO for Ardu for easy port connection *High quality 3.81 binding posts, reliable, convenient and durable *Combined with Proto Shield, the middle can be used as a prototype expansion board *Double-sided PCB via connection in the prototype extension area, components can be soldered on both sides of the front * There are SMD pads on the back IO for easy connection of flying leads