Here we’ll explain how to make pins to couple breadboards. By using these pins or coupling pins for back surface coupling, you can make a multi-layer breadboard like “Ikura-don(salmon roe on rice) board”.
The material is shown on the right and the completed item is on the left. The material is available from Akizuki Denshi Tsusho Co., Ltd. or other shops.
First, break off as many pins as you need.
Next, slide the black plastic part by pinching it with pliers.
It is now completed
By using some of these pins, as shown in the center of the image below, you can couple two breadboards facing each other.