Solderless breadboards are extremely handy. You always hear, of course, that you need to be careful with them at high frequencies and that they can add unwanted capacitance and crosstalk to a circu… ...

Here in Germany, for example, electronic construction kits allowed for solder-free assembly of circuits since about the 1930s (Radiomann kit, has used wooden/plastic boards with metal springs).

The schematic-configured breadboard, comes with integrated analog and digital functions, variable power supply, and Arduino capability. Microaware’s Sandwizz, a schematic-configurable breadboard ...