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Project Notes

#408 Power/BBBreakout

A little breadboard power adapter and breakout with 5.5x2.1mm barrel jack, terminal block and XH2.54 connectors.



Just a simple little project to clean up my desk a little, where I often have various power adapters and connectors cluttering up my space. This is an adapter that can plug into the power rails of a breadboard, and provides:

While I’m normally powering this from the barrel jack, it can actually be used to route power in with any of the connectors and out all the others.

The connectors and LED, with current limiting resistor good for up to 24V conservatively, are mounted on a small piece of protoboard, roughly laid out like this:




The end result:


Credits and References

Project Source on GitHub Project Gallery Return to the LEAP Catalog

This page is a web-friendly rendering of my project notes shared in the LEAP GitHub repository.

LEAP is just my personal collection of projects. Two main themes have emerged in recent years, sometimes combined:

  • electronics - usually involving an Arduino or other microprocessor in one way or another. Some are full-blown projects, while many are trivial breadboard experiments, intended to learn and explore something interesting
  • scale modelling - I caught the bug after deciding to build a Harrier during covid to demonstrate an electronic jet engine simulation. Let the fun begin..
To be honest, I haven't quite figured out if these two interests belong in the same GitHub repo or not. But for now - they are all here!

Projects are often inspired by things found wild on the net, or ideas from the many great electronics and scale modelling podcasts and YouTube channels. Feel free to borrow liberally, and if you spot any issues do let me know (or send a PR!). See the individual projects for credits where due.