This is a small adjustable (0 to 16.5V) power supply module modified to make connections to solderless breadboards and various modules easier. The module has an LCD voltage and current (to 2A) display, but this project adapts the module with a few simple parts to make it easier to use jumper wires to power projects.
I’d like to credit my dad for a rule: “If you are going to do things the same three times, make a tool.” I’m sure he taught me that, but over my lifetime I’ve watched him NOT use that rule. Usually, projects would turn out better if he had followed that rule. As a Dad myself, well, I need my son to remind me, too.
The basic rule is that if you find yourself doing the same thing for the third time, consider making it easier by making a template, jig, or tool. If you have a tool that helps you reduce some effort, the time spent making the tool will save you on the 3rd, 4th, and perhaps 100th time that you have to do something without the tool.
I was thinking of this the 3rd.. er… 20th time that I connected a bench power supply to a solderless breadboard to power up some electrical experiment. Somewhere in my collection of various electronic modules, I knew I had a variable voltage DC to DC converter that had a small LCD display for voltage and current, as well as some VERY small breadboards (5 rows of 5 connections each) and decided to use these to make this Jumper Wire Power Supply. Make it once, use it often.”

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