There are a lot of convenient and inexpensive ways to get get variable voltage from a fixed voltage DC power supply. The previous post detailed one way with an adjustable boost module. Many variations of these inexpensive modules are commercially available.
This post covers how to build a slightly different unit with an LM2596 step down DC buck converter module. The main difference with this unit and the adjustable boost module in the previous post is that this unit does not support increasing voltage. It is strictly for stepping down voltage. But I think it’s a good unit and definitely worth having in my toolbox. This post describes the steps on how to build it. Continue Reading »