Even today, combination breadboard and power supply systems command a pretty penny, so rolling your own might make good financial sense. [Raph] made his system modular, with 3D-printed frames that ...

Four breadboards were mounted in a case with a triple-fixed (+5, +12, and -12) power supply. While $80 doesn’t sound like that much, that was a third of the median US weekly salary in 1976.

(Without Microcontroller Board) Breadboard and Power Supply Modules-Include various LEDs, resistors, buttons, capacitors, a few transistors and diodes etc. With jumper wire and Male-female dupont ...